Rozprawy doktorskie na temat „Mountain bike”
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Linaker, Kelly, i n/a. "Physiological and Performance characteristics of Elite Mountain Bike Cyclists". University of Canberra. Health Sciences, 2004. http://erl.canberra.edu.au./public/adt-AUC20080916.141457.
Pełny tekst źródłaMetcalfe, John. "The physiology and bioenergetics of ultraendurance mountain bike racing". Thesis, University of Central Lancashire, 2011. http://clok.uclan.ac.uk/2824/.
Pełny tekst źródłaWaal, Steven Robert. "A Quantitative Approach for Tuning a Mountain Bike Suspension". DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2271.
Pełny tekst źródłaWaal, Steven. "A Quantitative Approach for Tuning a Mountain Bike Suspension". DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2246.
Pełny tekst źródłaGuzenko, A. I. "History of mountain biking". Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45489.
Pełny tekst źródłaSchiøtz, Olsen Sigrid. "Bike to Ski : Merging ski touring- and mountain bike wear in an attempt to optimise multifunctional outdoor wear for women". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23897.
Pełny tekst źródłaSoliani, Francesco. "Effetto delle vibrazioni nella mountain bike e nello sci alpino tramite sensori inerziali". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21363/.
Pełny tekst źródłaLee, Hamilton, i n/a. "Competitive mountain bike and road cycling: physiological characteristics of athletes and demands of competition". University of Canberra. Health Sciences, 2003. http://erl.canberra.edu.au./public/adt-AUC20050523.110406.
Pełny tekst źródłaGreeff, Marli. "Physiological demands of the Absa Cape Epic mountain bike race and predictors of performance". Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95970.
Pełny tekst źródłaENGLISH ABSTRACT: The purpose of this qualitative-quantitative study was to describe the exercise intensity and predictors of performance of a multi-stage mountain bike (MTB) race (2014 Absa Cape Epic) lasting 8 days. Twenty-three amateur mountain bikers (age 39 ± 9 years, height 178.8 ± 8.2 cm, body mass 74.7 ± 9.1 kg, VO2max 54 ± 7 ml.kg-1.min-1) who completed the 2014 Absa Cape Epic were involved in the study. The participants were divided into two groups according to their MTB experience. The experienced group included participants who previously completed more than three 3-day multi-stage MTB events and the novices group included those who has completed less than 3-day multi-stage MTB events. Prior to the event the participants completed a maximal aerobic cycling test and a simulated 40 km time trial (TT). The maximal aerobic test was used to determine 3 work intensity zones based on heart rate (HR) corresponding to blood lactate thresholds (LT: increase in blood lactate concentration of 1 mmol.l-1 above baseline values and the onset of blood lactate accumulation (OBLA), a fixed blood lactate concentration of 4 mmol.l-1). There were no statistically significant differences in the physical, physiological and performance variables measured in the laboratory between the two groups. The exercise intensity during the Cape Epic was measured using telemetric HR monitoring sets. RPE values were noted after each stage of the race. The mean HR was 88.1 ± 5.3% (experienced) and 84.2 ± 11.0% (novices) of maximal HR during the race or 88.9 ± 3.5% (experienced) and 85.9 ± 10.6 (novices) of laboratory determined maximum HR. More time was spent in the “low” HR zone (43.1 % vs 58.5 %, respectively), while only a small amount of time was spent in the “hard” HR zone (7.4% and 6.1%, respectively). The experienced group spent statistically significantly more time in the “moderate” HR zone compared to the novices group (49.5 % vs. 35.4 %). The experienced group performed significantly better during the event compared to the novices group in both the total event time (P = 0.004) and the general classification (P = 0.01). Relative and absolute power output (PO) at OBLA (P = 0.01 and 0.02, respectively) were statistically significant predictors of total event time, while relative peak power output was a significant predictor of general classification for the event (P = 0.02) . The total TT time was a significant predictor of average event HR (P = 0.03). This study showed that this MTB stage race is physiologically very demanding and requires cyclists to have excellent endurance capacity, as well as strength and power. The parameters from the maximal aerobic capacity test correlated better with outdoor performance than parameters from the simulated 40 km TT. Therefore the standard maximal aerobic capacity test are sufficient for testing mountain bikers and sport scientists can continue using this test to prescribe exercise intensity zones for training and events.
AFRIKAANSE OPSOMMING: Die doel van hierdie kwalitatiewe-kwantitatiewe studie was om die oefeningsintensiteit en voorspellers van prestasie tydens ‘n multi-dag bergfiets kompetisie (Absa Cape Epic) van 8 dae lank te bepaal. Drie-en-twintig bergfietsryers (ouderdom 39 ± 9 jaar, lengte 178.8 ± 8.2 cm, liggaamsmassa 74.7 ± 9.1 kg, VO2maks 54 ± 7 ml.kg-1.min-1) wat die 2014 Absa Cape Epic voltooi het, het aan die studie deelgeneem. Die deelnemers is in twee groepe verdeel volgens hulle ervaring in multi-dag bergfiets kompetisies. Die ervare groep was al die deelnemers wat meer as drie 3-dae multi-dag bergfiets kompetisies voltooi het. Die onervare groep was al die deelnemers wat minder as drie 3-dag multi-dag bergfiets kompetisies voltooi het. Voor die kompetisie het al die deelnemers ‘n maksimale aërobiese toets en ‘n gesimuleerde 40 km tydtoets in die laboratorium voltooi. Die maksimale aërobiese toets is gebruik om drie werk intensiteit sones volgens die hartspoed te bepaal, naamlik die hartspoed by die laktaatdraaipunt(‘n toename in bloed [laktaat] van 1 mmol.l-1 bo die basislynwaardes) en die hartspoed by die aanvang van bloedlaktaat akkummulasie (‘n vaste bloed [laktaat] waarde van 4 mmol.l-1). Daar was geen statisties betekenisvolle verskille in die fisiese, fisiologiese en prestasie veranderlikes tussen die twee groepe nie. Die oefeningsintensiteit tydens die Cape Epic was gemeet deur gebruik te maak van hartspoedmonitors. Die RPE waardes was aan die einde van elke skof genoteer. Die gemiddelde hartspoed was 88.1 ± 5.3 % (ervare) en 84.2 ± 11.0 % (onervare) van maksimale kompetisie hartspoed, of 88.9 ± 3.5 % (ervare) en 85.9 ± 10.6 % (onervare) van die maksimale hartspoed soos in die laboratorium gemeet. Die fietsryers het meer tyd spandeer in die “lae” hartspoed sone (43.1 % vs 58.5 %, onderskeidelik), in vergelyking met die “moeilike” hartspoed sone (7.4 % vs 6.1 %, onderskeidelik). Die ervare groep het statisties betekenisvol meer tyd in die “matige” hartspoed sone spandeer (49.5 % vs. 35.4 %) in vergelyking met die onervere groep. Die ervare groep het beter presteer tydens die kompetisie vir beide totale kompetisie tyd (P = 0.004) en algehele klassifikasie (P = 0.01). Relatiewe en absolute krag by aanvang van bloed laktaat akkumulasie was statisties betekenisvolle voorspellers van totale kompetisie tyd (P = 0.01 en 0.02, onderskeidelik), terwyl maksimale krag ‘n statisties betekenisvolle voorspeller was van algehele klassifikasie in die kompetisie (P = 0.02). Die totale tydtoets tyd was ‘n statisties betekenisvolle voorspeller van gemiddelde hartspoed tydens die kompetisie. Die studie het gewys dat hierdie multi-dag bergfiets kompetisie fisiologies baie uitdagend is en dat fietsryers uistekende uithouvermoë kapasiteit, sowel as krag en plofkrag moet besit. Die veranderlikes van die maksimale aërobiese toets het beter met prestasie in die veld gekorreleer as die veranderlikes van die gesimuleerde 40 km tydtoets. Daar word dus afgelei dat die standaard maksimale aërobiese toets voldoende is vir die toetsing van bergfietsryers en sportwetenskaplikes kan aanhou om hierdie toets te gebruik om oefeningsintensiteit sones voor te skryf vir oefensessies en kompetisies.
Haman, Martin. "Design rámu horského kola". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229015.
Pełny tekst źródłaMichelini, Luca. "Valutazione FEM di test di certificazione su un telaio per mountain bike in materiale composito". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Znajdź pełny tekst źródłaBagalini, Emanuele. "Blueadvice, dispositivo per mountain bike di segnalazione preventiva per la trail courtesy in ambienti naturali". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22739/.
Pełny tekst źródłaPeterson, Dirk N. "Using large scale aerial images for 3D visualizations of Marion Sampson Park mountain bike trails". Diss., Maryville, Mo. : Northwest Missouri State University, 2008. http://www.nwmissouri.edu/library/theses/PetersonDirk/index.htm.
Pełny tekst źródłaThe full text of the thesis is included in the pdf file. Title from title screen of full text.pdf file (viewed on December 17, 2008) Includes bibliographical references.
Nord, Rasmus. "Modelling of a motorcycle/mountain bike suspension and digitization of a cam drum motor control". Thesis, KTH, Fordonsdynamik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-265630.
Pełny tekst źródłaDetta examensarbete är utfört i samarbete med Öhlins Racing AB, som är ett svenskt hjullupphängningsföretag. Kvalité är mycket viktigt för Öhlins, därför lägger de mycket resurser på utveckling och provning av deras produkter. I och med att provning är en så stor del av vad Öhlins som företag gör så är det viktigt att kontinuerligt sträva efter att förbättra de provmetoder som används inom företaget. Två populära metoder för att förbättra provningsmetoder är att automatisera styrningen av maskiner och att simulera med matematiska modeller. Båda metoder har potential att reducera tiden som förbrukas under tester. Det här projektet fokuserar på de här två metoderna och är därför uppdelat i två delar. Den första delen fokuserar på digitalisering av motorregleringen av en rullande landsväg kallad Cam Drum, ämnad för livstidstester på hjulupphängningar, för att möjliggöra automatiserad reglering och i den andra delen så modelleras testbänken som ett hjulupphängningssystem för att simulera tester innan produktion. Målet med digitaliseringen är att förenkla användandet av Cam Drum och därmed reducera tiden det tar att använda maskinen samt att möjliggöra mer avancerade tester och målet med modelleringen är att mha valideringen visa att modellen går att använda vid utvecklingen av nya produkter. En programmerbar reglerenhet har kopplats till den befintliga frekvensomvandlaren som används för att reglera motorns rotationshastighet och en HMI-skärm används för att styra reglerenheten. Kommunikation mellan regulatorer och frekvensomvandlare sker via serieprotokollet Modbus RTU. Hårdvaran som har används för att skapa installationen har primärt inhandlats från Siemens. Regulator- och HMI-programmering har utförts i Siemens programvara SIMATIC Step 7 med programspråken LAD och FBD. Den digitala motorregleringen har testats med goda resultat och positiv feedback från tekniker. Den enda funktionaliteten som saknas är att kunna sända webserverdata över företagets industriella nätverk, vilket idag inte är möjligt på grund av IT-relaterade säkerhetsfrågor. Framtida arbete bör därför fokusera på att lösa detta problem. En framgaffel och en bakhjulsupphängning har modellerats i Matlab Simulink. Båda modellerna är designade för att simulera en motorcykel eller mountain bike-upphängning men framgaffelmodellen har endast validerats mot data från mountain bikes och baksvingsmodellen har endast validerats mot motorcykeldata. En alternativ däckmodell har tagits fram för att åtgärda problem kopplade till konventionella endimensionella däckmodeller. Den nya modellen estimerar arean av den komprimerade luften sett från sidan och skalar kraften den producerar enligt arean. Nya värden för däckets fjäderstyvhet och dämparkoefficient för det här systemet har tagits fram fritt under valideringen. Valideringen gjordes med positionssignaler hämtade med positionsgivare och positionssignaler hämtade från videor. Framgaffelmodellen testades mot två olika framgafflar men valideringen fokuserar på tester gjorda med en av gafflarna då tillräckliga data med den andra gaffeln saknades. Efter validering visade modellen beteenden som liknade de insamlade signalernas. Däckparametrarna kan valideras vidare men modellen bör räcka för att göra estimeringar.
Laser, Marnie. "The effects of selected mountain bike front suspension forks on handlebar vibration and ground reaction forces". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ33405.pdf.
Pełny tekst źródłaDavie, Mark C. "Mountain bike suspension systems and their effect on rider performance quantified through mechanical, psychological and physiological responses". Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2432/.
Pełny tekst źródłaMolina, Guilherme Eckhardt. "Desempenho da potência anaerobica em atletas de elite do mountain bike submetidos à suplementação aguda com creatina". reponame:Repositório Institucional da UnB, 2006. http://repositorio.unb.br/handle/10482/6749.
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Com objetivo de investigar o desempenho da potência anaeróbia durante a fase básica em atletas de elite do mountain bike submetidos à suplementação aguda com creatina e levantar as características morfofuncionais deste grupo foram analisados 20 indivíduos (n=20) divididos aleatoriamente em dois grupos placebo (PLA, n=10) e creatina (CRE, n=10). Foi utilizado delineamento duplo-cego, sendo que no primeiro dia de coleta os voluntários foram submetidos aos testes de variabilidade da freqüência cardíaca e ergoespirométria. No segundo dia foram realizados os testes (PRÉ) de pesagem hidrostática e de potência anaeróbia (Wingate). Os suplementos (creatina e maltodextrina) foram tomados diluídos em meio líquido em doses iguais (0,3 g/kg de massa corporal, dividida em três doses diárias) por sete dias. Após os sete dias com ou sem suplementação com creatina os atletas retornaram para realizar os testes (PÓS). Foram observadas diferenças significantes do PRÉ para o PÓS-testes no somatório de dobras ao nível de P<0,05 para ambos os grupos. A massa corporal total (MCT) e massa corporal magra (MCM) no grupo CRE aumentaram em 0,5 e 1,1% , enquanto que o PLA variou em - 0,7 e -1,1%, respectivamente. O percentual de gordura (GORD%) e a massa gorda (GORD) para ambos os grupos apresentaram redução (CRE, 9,2% e 15,4%) e (PLA, 4,0% e 10,1%). O grupo CRE apresentou aumento na potência pico (P<0,01), redução do índice de fadiga (P<0,05) e instante da potência pico (IPP) (P<0,05) do PRÉ para o PÓS-testes, entretanto, somente o IPP apresentou diferença entre grupos (P<0,01). Existem evidências de que a suplementação com creatina a curto prazo pode aumentar a potência pico (CRE,11,26 0,46 / 11,69 0,51 a%=3,81), (PLA,11,28 0,74 /11,27 0,51 a%= -1,24%) IPP (CRE 3,0 0,47/3,6 0,84 a%= 20%),(PLA 3,1 0,31/2,9 0,23 a%= -2,45) e reduzir a fadiga (CRE,36,06 6,53/ 33,33 7,52 a% = -7,57%), (PLA,36,71 5,41/ 36,61 6,06 a%= -0,27) em atletas do mountain bike.Destacam-se ainda os altos valores de potência (aeróbia e anaeróbia) bem como do limiar anaeróbio obtido nesses atletas. ____________________________________________________________________________ ABSTRACT
The aim of the present study was to investigate the effect of a high dose, short-duration oral creatine supplementation on anaerobic power and morfofunctional profile of 20 (n=20) male off-road cyclists. A double-blind design was used and the athletes were randomly assigned into 2 groups: placebo (PLA = 10) and creatine (CRE = 10). The tests were split in two days. On the first day, subjects performed two tests, heart rate variability and aerobic power output. On the second day they were submitted to anthropometric evaluation, underwater weighing and Wingate Anaerobic Test. The oral supplements (creatine and malthodextrine) were taken in sweetened vehicle, during 7 days, in three equal doses per day (0, 1 g/kg body mass/dose). After seven-day period, the athletes returned to the laboratory to post-treatment tests (PÓS). Student t-test showed significant differences on skinfold sum between PRÉ and PÓS tests (P<0,05), without differences between groups. Total body mass (MCT) and lean tissue mass (MCM) increased in CRE group (0,5% and 1,1%), while the PLA group showed decreases (-0,7% and -1,1%). The percentual of fat (GORD%) and fat mass (GORD) decreased for both groups (CRE, 9,2% and 15,4%) and (PLA, 4,0% and 10,1%). The CRE group showed increases for power output (P<0,01) and decreases for fatigue index (P<0,05) between PRÉ and PÓS tests, however, no significant differences were observed between groups for power output, mean power and fatigue index. The only variable that differs between groups was the peak power moment (P<0, 01). The results of the present study indicates that the short-term creatine supplementation leads to significant improvements on power output (CRE, PRÉ 11,26 0,46 / PÓS 11,69 0,51 a% =3,81) and (PLA, PRÉ 11,28 0,74 /11,27 0,51 a% =-1,24%), fatigue index (CRE, PRÉ 36,06 6,53/ PÓS 33,33 7,52 a% = -7,57%) and (PLA, PRÉ 36,71 5,41/ 36,61 6,06 a% = -0,27) and peak power moment in off-road cyclists. Attention must be paid to the high values for both aerobic and anaerobic power as well as for anaerobic threshold obtained by these athletes.
Jelínek, Martin. "Návrh rámu horského kola a jeho deformačně napěťová analýza pomocí MKP". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228304.
Pełny tekst źródłaGuðjónsdóttir, Auður, i Benedikt Árni Harðarson. "Investigation of leakage contribution from different air seal components". Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259670.
Pełny tekst źródłaMountainbike är en sport där utövare åker på stigar med varierande lutning och svårighet. Terrängcyklar är generellt utrustade med stötdämpare eller fjädrar på framhjulet och ofta också på bakhjulet. Vissa terrängcyklar har stötdämpare bak som använder trycksatt luft för att dämpa istället för att använda traditionella stålfjädrar. Luften är sluten inuti stötdämparen med hjälp av X-rings tätningar, vilket ger en fjäderkraft på hjulet. Det är viktigt att tätningen fungerar så att luftfjädern inte snabbt tappar trycket när den används. En experimentplan skapades i ett försök att uppskatta effekten av tätningsdimension, smörjning och ytjämnhet på luftläckage för mer robusta stötdämpare. Accelererade tester gjordes i en dynamometer, som troddes kunna skapa signifikant slitage på en stötdämpares tätning inom 24 timmar upprepade gånger. 19 test gjordes med en körtid på upp till 72 timmar med variation av testparametrar som slaglängd och frekvens. De förväntade felkällorna uppstod inte i något av testerna. 11 tester visade inga tecken på fel medan 8 tester misslyckades på grund av att oväntade komponenter slets ut eller gick sönder. Stötdämparens huvudtätning visade sig slitas fortare än lufttätningen, vilket resulterade i läckage inuti luftfjädern mellan dess positiva och negativa kammare. Detta oförutsedda fel behöver vidare undersökning med tester på fler olika typer av stötdämpare.
Marešová, Petra. "Rekreační cyklistika a její rozvoj pro posílení cestovního ruchu v regionu severovýchodní Čechy". Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-199027.
Pełny tekst źródłaWu, Chia-Chin. "Static and dynamic analyses of mountain bikes and their riders". Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4159/.
Pełny tekst źródłaGrierson, Greg Michael Jr. "Analysis of Amur honeysuckle Stem Density as a Function of Spatial Clustering, Horizontal Distance from Streams, Trails, and Elevation in Riparian Forests, Greene County, Ohio". Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1621942350540022.
Pełny tekst źródłaSchua, Karoline, Stefan Wende, Sven Wagner i Karl-Heinz Feger. "Soil Chemical and Microbial Properties in a Mixed Stand of Spruce and Birch in the Ore Mountains (Germany)—A Case Study". Molecular Diversity Preservation International, 2009. https://tud.qucosa.de/id/qucosa%3A29148.
Pełny tekst źródłaSchua, Karoline, Stefan Wende, Sven Wagner i Karl-Heinz Feger. "Soil Chemical and Microbial Properties in a Mixed Stand of Spruce and Birch in the Ore Mountains (Germany)—A Case Study". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-192202.
Pełny tekst źródłaMühlhans, Petr. "Podnikatelský záměr v oblasti cyklistiky pro všechny". Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-127025.
Pełny tekst źródłaSchua, Karoline, Stefan Wende, Sven Wagner i Karl-Heinz Feger. "Soil Chemical and Microbial Properties in a Mixed Stand of Spruce and Birch in the Ore Mountains (Germany) - A Case Study". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-173719.
Pełny tekst źródłaHrachovec, Matěj. "Horský hotel". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265387.
Pełny tekst źródłaMakrinos, George Adam. "Drawing Music, Playing Architecture". Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33890.
Pełny tekst źródłaMaster of Architecture
Chang, Jia-ning, i 張家寧. "A Study on Recognition & Preference of Mountain Bike -Sampling from Full Suspension Mountain Bike". Thesis, 1996. http://ndltd.ncl.edu.tw/handle/76964398483496801312.
Pełny tekst źródła國立臺灣科技大學
工程技術研究所
84
The mountain bike represents the most exciting development in cycling this century, It gives cyclists access to places that were once thought impossible to ride, and makes cycling access -ible to millions who once thought they would never enjoy riding a bike. Now the affluent world''s most popular bicycle, the mountain bike, with fat tyres, low gears, heavy-duty brakes, and beefedup frame, has turned a century of cycling technology on its head and opened a new door for industrial designer. The main structure of this study was the form recognition and preference investigation of full suspense mountain bikes'' frames. the research methods were interviews with bicycle manu -facturer, projection experiment, card sorting, questionnaire investigation, semantic differential method , hierarchical cluster analysis and multi-deimensional scaling( MDS ). The analysis result shows that the design group and the ordin -ary group have the same recognition structure to mountain bikes'' frame design as "tradtional v.s. non- tradtional" and "simplicity v.s. complicity", but the ordinary group is prone to "weight" on the design of front triangle. The main prefer -ence factors for both group are "simplicity" and "lightweight". The ordinary group prefer "tradtional beauty", but designer group prefer " form aesthetics".
Hsu, Chung-wei, i 許崇維. "Design Optimization of a Mountain Bike Frame". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/91881912959681577641.
Pełny tekst źródła國立高雄第一科技大學
機械與自動化工程研究所
100
The mountain bicycle is used as a studied example. The design variables of a bicycle frame are achieved by uniform experimental design. Utilizing the software, ANSYS/LS-DYNA, the safety requirements of bicycle test simulation analysis is presented. Using Kriging interpolation method, mathematic models are built. Besides, through nonlinear programming of MATLAB, it is figured out the best specification of the bicycle frame, which fits on the shock resistance test and the nature frequency of a bicycle frame. For the minimum deformation and mass of bicycle frame, the best design parameters for bicycle frames can be found.
Lin, Chien-yung, i 林建勇. "A study of mountain bike trails development in Taiwan-- example on Xi-Keng Mountain Trial". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/02326509641835358443.
Pełny tekst źródła南華大學
建築與景觀學系環境藝術碩士班
96
The purpose of this study is to understand the capabilities of the developing mountain trails for biking activities in Taiwan by using “Wu Lai Xi Keng” Mountain Trail as an example. According to the popularity of having leisure exercise and the attentions on environment issues in Taiwan’s society, biking has become one of the popular outdoor activities in Taiwan. Currently in Taiwan, most of the biking trails are designed for casual biking only but mountain biking. Regarding to previous research, more and more bikers in Taiwan are looking for high-skill trails in the mountain. Beside, the mountain terrain and the nature forest signage in Taiwan are perfect for mountain biking and wide activities. The result of the study suggest that the future development of mountain biking trails should begin with design the fundamental structures and information system. Also, the trails can be divided into four different levels such as entry level, second level, senior level, and prime level, etc. On the other hand, based the undeveloped environment in “Wu Lai Xi Keng”, the result also suggest to build the “Mountain biking Organization” for not only promoting mountain biking activities but also planning and managing all mountain bike trails in Taiwan. The organization can use Wu Lai Xi Keng as a model to create the first mountain bike park in Taiwan for all mountain bikers. Proceed to the next step, The Mountain Bike Park will not only attract the bikers but also drive more tourists to visit and enjoy the local signage in Taiwan.
Wang, Jyun-Sheng, i 王俊生. "The Relation between Frame Geometry and Stiffness for Mountain Bike". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11278591463872616601.
Pełny tekst źródła國立雲林科技大學
機械工程系
102
Bicycles are classified into different kinds by their function, among others are road bicycle, mountain bicycle, cross-country bicycle and many others. However, different kinds of bicycle frames have specific geometric design for different purposes. The research is to discuss the effect of geometric dimension on bike frame stiffness. Firstly, use four different brands of hardtail mountain bike with 26 and 27.5 inch frame geometry, then stimulate how outer force functions on seat tube, bottom bracket and head tube with analysis software. Discuss the distribution of frame deformation and calculate bike frame stiffness to know how it works. Secondly, select a 27.5 inch rim bike frame from one of the four brands and parameterize the dimension of seat tube center to center, seat tube angle and BB drop. This is done by changing dimension of single part to realize the effect of dimension in different part on frame deformation. Lastly, optimize the bike frame geometry. The research is done by a finite element analysis software─ANSYS workbench, to simulate the deformation of forced bike frame. Finite element analysis provide a fast and easy way to obtain the relation between the bike frame geometric design and its deformation. By combining with engineering analysis to analyze the properties of bike frame, a bike prototype can be developed until satisfactory results are acquired. The research provides the benefits of lowered development cost, shortened development time, enhanced quality and performance for a bike frame.
CHEN, YI-HSIANG, i 陳逸翔. "A Research of the Consumer-Oriented Mountain Bike Recommendation System". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/37135024716621611010.
Pełny tekst źródła朝陽科技大學
工業設計系
105
With the acceleration of global warming and the depletion of energy, bicycles have become a good companion for both commute and leisure. Mountain bikes are designed for bumpy tracks and sloping fields and consequently a decent choice for people who want to be close to nature. This research aims to explore the relationship between consumers’ sensual needs and mountain bike design. A searching system is designed based on the results of questionnaires for consumers to search for the mountain bikes that best match their needs. There are four steps in this research. First, after screening out bikes with similar frame, forty bikes are chosen among mainstream brands as samples. Second, questionnaires are designed to find out the best ten adjectives to describe a mountain bike. Then another questionnaire is filled out to explore the connection between the chosen adjectives and the bike samples. A web-based recommendation system is finally programmed based on the results.
Pan, Jiung-Cheng, i 潘炯丞. "Topology Optimization of the Mountain Bike Frame with Full Suspension". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/03324861683466558635.
Pełny tekst źródła國立臺灣大學
機械工程學系
85
Owing to the increasing demand of shock absorbing function, the traditional bicycle frames are no longer suitable for current bikes, and the design methodology of bicycle frame also needs some revolution. Traditionally, engineers analyze the prejudged structures time and again to modify the previous design. However, the structure optimization provides us more efficient design process and the proper direction to revise the design. As the base of structure optimization, the topology optimization is appropriate for the structure design in the conceptual design phase. This method combining finite element analysis and optimization algorithm analyzes the structure and changes the design variables continuously in the design iterations. The mountain bike(MTB) consists of the front body, the rear body, the fork, and the rear shock absorber. A five degree of freedom model is established to simulate the dynamic characteristic of MTB. This study defines the design domains, loading cases, and boundary conditions for the front frameand the rear frame, respectively, to obtain the static topology optimization model. The shock absorbing effect and the frame stiffness fo the new design ofMTB frame are considered simultaneously. To satisfy the above demands, the study integrates topology optimization and dynamic simulation as a mechanism of dynamic analysis. In the mechanism, the positions of the shock absorber arethe input data, and the accelerations of the frame are the output. Using the accelerations as the object to be minimized, the above mechanism is used to compute the object function value, and the positions of shock absorber is chosen as design variables. The road surface is assumed as a sinuous wave. Thestudy utilizes simulated annealing(SA) method to obtain the solution of above optimization problem, and posts transient responses to compare the optimal design with the initial design.
Kraft, Gina L. "Mountain bike injuries a ten year retrospective evaluation 1998 to 2007 /". 2009. http://digital.library.okstate.edu/etd/Kraft_okstate_0664D_10463.pdf.
Pełny tekst źródłaRibeiro, Tiago Miguel Nunes. "Performance assessment for mountain bike based on WSN and Cloud Technologies". Master's thesis, 2016. http://hdl.handle.net/10071/13031.
Pełny tekst źródłaA bicicleta de montanha é um dos equipamentos para desportos no exterior mais usada. A tese descreve todo o desenho, desenvolvimento e implementação de Performance Assessment for Mountain Bike based on WSN and Cloud Technologies. Este apresenta um sistema de deteção distribuída para o aumento do desempenho, melhorar a metodologia da prática do ciclismo e para formação de atletas. Para tal foi desenvolvida e anexada uma rede de sensores que está embutida no equipamento do ciclista, através desta rede de sensores sem fios são obtidos os valores respetivos à interação do utilizador e a sua bicicleta, sendo estes apresentados ao treinador e ao próprio ciclista. Os sensores colocados comportam-se como nós de uma rede de sensores sem fios. Isso é possível com o desenvolvimento de sistemas baseados na Internet das coisas no desporto, a observação da movimentação e monitoramento de atletas nas suas atividades tem um papel importante na sua formação como ciclistas e ajuda a aumentar o desempenho. O sistema é baseado numa rede ZigBee sem fios, que permite a comunicação máquina-para-máquina e o armazenamento de dados num servidor localizado na nuvem. Toda a informação na nuvem pode ser acedida através de uma aplicação mobile que analisa e correlaciona todos os valores calculados usando os dados recolhidos durante o treino efetuado por cada ciclista. Como em muitas aplicações de ciclismo estas usam o telefone como um módulo para obter os valores, neste trabalho o caso é diferente fazendo o uso do telefone/tablet para apenas consultar as informações. Alguma informação sobre o ciclista é fornecida para poder efetuar alguns cálculos, relativos à saúde do ciclista, neste caso toda a energia gasta na prática de um determinado treino. Toda esta informação pode ser acedida através de uma aplicação Android e por consequência num dispositivo Android. Com a aplicação desenvolvida é possível observar e processar toda a informação recolhida através dos sensores implementados, a observação dos dados recolhidos pode ser efetuada pelo treinador responsável, como pelo próprio atleta. Portanto, o sistema permite a realização de um ilimitado número de sessões de treino, estes podem ser consultados a qualquer momento através da aplicação móvel. Fazendo com que seja possível manter um histórico da evolução de cada atleta, podendo assim observar e comparar cada sessão de treino, realizada por cada atleta.
Maffitt, Charles McKean. "Singletrack connections integration of mountain bike trails into the Oconee Rivers Greenway /". 2007. http://purl.galileo.usg.edu/uga%5Fetd/maffitt%5Fcharles%5Fm%5F200708%5Fmla.
Pełny tekst źródłaSung, Yunan, i 宋幼南. "A Study on Commercial Photography for Revealing Strong Characteristics of Mountain Bike Tires". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/54544035070422077255.
Pełny tekst źródła大葉大學
設計暨藝術學院碩士在職專班
102
As biking becomes more and more popular nowadays, internet trading of bike components make it become more important to have good product photos to draw buyers’ attention. Because tire is one of important components of bike, this research aims to investigate how to take a good photo by considering four factors, tire angle, lens, camera angle, and lighting contrast. By taking various photos and shown to subjects to rate them, it is anticipated that photos with more tension can be found to put on internet to attract customers. The results show that tire angle, camera angle, and lighting contrast do influence the image of the tire. The influences of camera angle, and lighting contrast are independent.
Ku, Chieh-Wen, i 古傑文. "Industrial Structured Patent Competitive Intelligence System – Using the Suspension Mountain Bike Industry as an Example". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/q7s69z.
Pełny tekst źródła東海大學
企業管理學系碩士班
104
The application of patent resources has been the difficult problem of domestic enterprises in Taiwan. Domestic enterprises tend to believe that patent could avoid the attack of patent litigation. However, this is not certainly. The key reason is that the information of industry, technology, and patent are independent development. Thus, the enterprises do not pass through the patent rights to protect their profit and right; even take the patent into the weapons of attack or profit. Intelligence Resources Planning (IRP) could link the information of industry, technology, and patent to present the complete information for the enterprises, but the method of architecture were complicated that the Small and Medium-sized Enterprises (SMEs) hard to apply it. This study focus on simplified the method archi-tecture of IRP and developed both big data and data visualization within the simplified IRP architecture that supported the SMEs to decision-making.
Wu, Sui-An, i 吳歲安. "A Study on Computer Aided Design System-with the Mountain Bike Design as an Example". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/25905903950189267450.
Pełny tekst źródła華梵大學
工業設計系碩士班
93
The process of designing bicycles will be different because of companies’ types in business organization, experience, as well as algorithm in new product development. Particularly, 2D software based development procedures are unable to quickly correspond to recent competitive needs of current industry. This study is aimed at improving the holistic development model for mountain bike design. By means of 3D model making and the use of data bank, designers can get helps in need and finish blueprints of bicycles to be the foundation for further idea evaluation and screening. It has benefits on design, and hopes to do bicycle industry good. The author came to the following conclusions: 1.By questionnaires, the ideas of bicycles’ style and Image Word can help designers realize the description of product and cognition, and then design more necessary ones. 2.This study constructs 3D models of mountain bikes, and defines multiple structural combinations through parameters of mountain bike frames. Therefore, designing bicycles can be more flexible to fit competitive and changeable marketability. 3.The simple user interface can help designers reach their goals in CAID, simplifying the process of mountain bike design. 4.By means of data bank construction, related design information can be easily accessed, thus saving designers a lot of time in collecting data, and enhancing the efficiency of new mountain bike design. 5.The database system provided by this study can help designers reach their design goals rapidly and provides basic blueprints, enhancing the effectiveness of the holistic mountain bike development procedure. 6.For bike companies, the use of industrial design isn’t frequent. The introduction of Kansei words for bike design can improve the design quality and shorten the lead time. Especially, it will help bring designers and customers closer in perceptions of product form styles. Therefore, the final design can really meet the requirements and reach the goal of consumer-oriented design.
Chen, Tsung-Tai, i 陳宗台. "The Cognition Differences on Product Images between Consumers and Designers Using the Mountain Bike Folk as an Example". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/94469387712404802217.
Pełny tekst źródła華梵大學
工業設計系碩士班
94
Conventional industries, especially for bicycle industry, have a great contribution to Taiwan. To the past contribution of economic miracle or the global management, bicycle enterprise has an imperishable and substantial achievement during the process of creating economic value. This research probes the front fork of the bicycle on its structural design and outside appearance from the viewpoints of the designer and the consumer. Investigation and research focus on a variety of front forks so as to know what are consumers’ most popular styles. Then, a data bank is established to store the information in classification. It provides designers and consumers with further detailed information on the front fork, and also offers valuable references to the enterprises and the framework of academic theories. This research is made with 80 questionnaires – 50 copies for consumers and 30 copies for designers. The finding of the research shows that 11 of the 60 semantics the questionnaire have opposite preferential cognition, and those who have the same preferential opinions have a difference up to 0.94. It shows that there still exists a difference between the designer’s current designing and the consumer’s cognition. The cognitional difference between the designer and the consumer can be understood by means of a deep study and categorizing the front forks. Thus, the designer is able to satisfy consumer’s need from categorizing the products.
Liang, Chien-Wen, i 梁建文. "A Survey of Consumer Preference on the Correlation between Market Segmentation and Product Attributes -- Implementation on the Mountain Bike". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/40394067938648241986.
Pełny tekst źródła東海大學
工業設計學系
93
Internally there''s been leisure time and motion in vogue. Because of consumers change their life style and raise standards of leisure time''s quality. Mountain bike are extensively sell and use by consumers and it becomes to represent of fashionable, delicate, tasteful, pleasurable, and sports. Products are tendency to develop more individualism and variation from consumers needs. How to understand consumer behavior, preferences, and cognitions of feelings of each consumer groups? That is very important affairs of product development to recognize before do it. It is appropriate to help developing new product on the positional of any consumer groups need from the marketing. Our research purpose is probe into middle or high grade mountain bike from consumer with consumer behavior and image; so that, we can make sure consider factor and type of bike at present of domestic marketing of each consumer groups. For the purpose of resource are for enterprises interior to produce product development. Our research proceed adopt by survey and it includes three parts. The first is consumer behavior. The second one is consumers'' preferences and cognitions of feelings to product. The last one is consumers'' personal information. First of all, we discover diversity product on market domestic customs related to documents. There are many deferent consumer groups exist and have deferent product preferences situation. Does middle or high grade of consumer marketing by mountain bike which still have many different consumer groups exist and preferences? Research fellows are aimed at selling middle or high grade mountain bike from domestic market at present to conclude by three series: XC, all-rounder, and downhill. And then select one representative sample from three series. Besides, take for consumer''s product image with cognitions of feelings form 20 glossaries of adjective are screened off from 64 glossaries to make test survey. And then gather previously two series contents to proceed a large number by survey. Afterwards, analyze the data from the SPSS statistics software. Research result reveals mountain bike consumer market includes six different consumer groups indeed in domestic. Those are practical group, motion group, fashion group, leisure time group, ride instead of walk group, and brand important group. Each group has different receivable of buying price. Among motion group, fashion group and brand important group may accept higher price such as NT$10,000~60,000. On the other hand, we discover from research (three samples of all), consumer ride bicycle more frequently that can more affected by product''s “fashionable image”. (Sample one), consumer could be more affected by product''s personality and profession image of superior grade comprehensibility on product. (Sample two) consumer could be more affected by product''s leisure time and male image of superior grade comprehensibility on product. Hope by way of this research of resources can supply bicycle industrial circles or academic circles.
Huang, Chi-Jung, i 黃啟榮. "A Study on the Interconnected Development of Lifestyle Requirements and the Creation of Added Value, with the Mountain Bike as the Example". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/05276458318372857384.
Pełny tekst źródła國立臺灣師範大學
設計研究所
90
Mountain bikes were once seldom seen on the streets of Taiwan’s towns, but the release of comparatively inexpensive models has changed the situation. In the past two years, you can see on any given day people of all ages riding everywhere that roads go. There are not too many riding restrictions, and there is a great variety in terms of use. Aware of this trend, most domestic bike firms have already begun R&D on producing anti-vibration frames to supply market needs. In this same time period, the two-day weekend was made domestic law. This new system gives people more room for recreation and makes them reconsider how they allocate time for work and play. This new recreational lifestyle has aided the development of the recreation and leisure products industries. This research seeks to deal with the phenomena described above. It takes trends in recreational lifestyle as the background. Further, in the light of the recent increase in our leisure quality, this research examines: a) The interconnection between the mountain bike and our recreational lifestyle. b) The factors involved in the large-scale development of the mountain bike market c) The influence of this interconnection on: 1) technologically mature mountain bike design, and 2) the room for development of this product’s added value. This research uses the survey research method. There are two formats─company surveys and consumer surveys─and the survey content covers: 1) the behavior and attitude involved in mountain bike use; 2) the factors involved in the large-scale development of the mountain bike market; and 3) requirements for increasing this product’s added value. The variance of the obtained data was analyzed using the T-test and One-Way ANOVA statistical methods. Afterwards, the product qualities that satisfied or did not satisfy consumers were examined to determine their order of importance. This examination allowed us to calculate an “added value order of satisfaction” and an “added value order of dissatisfaction” were calculated. These orderings should provide a useful reference for future practical design work. The research results obtained were: 1. The factors involved in the rapid growth of the mountain bike market─in order of importance─are: 1) comfortability, 2) trendiness, 3) increasing reasonableness of price, 4) environmental friendliness, 5) functionality. 2. The qualities for the “added value order of satisfaction” are: 1) comfort level, 2) frame design, 3) rise in quality of leisure activities, 4) trendiness, 5) color schemes or matching. 3. The qualities for the “added value order of dissatisfaction” were: 1) space planning for carrying gear, 2) inadequate reasonableness of price, 3) safety lighting equipment, 4) frame heaviness, 5) total bike size. 4. From the above analyses we can know that for practical design we should develop a gear carrying extendable rack. This research isolates design guidelines for the mountain bike, a mature period product. Thinking through the concept of added value, we may improve the performance of this product’s symbolic value. This improvement will provide a firmer competitive foundation for the mountain bike as it struggles through the process of differentiating itself from the traditional road bicycle.
Ou, Shiow-fen, i 歐陽秀芬. "A Feasibility Assessment of Industrial Development in the Environmental Sensitive Area:A Case Study on ”Cross Industry -- Mountain Bike Sport” in BaoLai of Kaohsiung". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/03155635192071209809.
Pełny tekst źródła康寧大學
資產管理與城市規劃研究所
100
Morakot typhoon has been occurred hard damage more two years in Sorthern of Taiwan. However, Liugui, Maolin, Jiaxian and Taoyuan were broken the worse district by Morakot. Especially, the situation of Liugui district is the most severe. There are still doubts unsolved for the restruction of hot springs in Baolai district. The hot spring spa was collapsed, which operators have to be facing the legalized declaration in Baolai, and warring how to rebuild? The actual economical profit of redevelopment policy is doubtful. Currently, the civilians are launching the Cross Industry, which is designed by the honorary director of Baolai Reconstruction Association, Roger Chen for the reconstruction in Baolai. It is in line with the fact that Baolai is located in the water quality and quantity protection area. After Morakot disaster, Morakot Post-Disaster Reconstruction Council of Executive Yua classified Baolai as type 1 and type 2 strategic districts of reconstruction. This study explored the development strategies and suggestions of Cross Industry in Baolai area, analyzed the feasibility through three aspects of regulation, economy and society. The study has found that: 1. Regulation assessment: the contents of Cross Industry didn’t violate any regulations of the system. Because the competent authorities of the wild creeks aren’t clear, Kaohsiung City Government can be the authority to promote Cross Industry. 2. Economic benefit: it was calculated the individual recreational benefit and resulted in NTD 8,281.04 by Travel Cost Method. Furthermore, based on the total number of participants of 8 activities which were held by Cross Industry, the total economic profit was estimated as high as more than NTD 30 million. 3. Society benefit: most interviewees were willing to see the lauch of Cross Industry in Baolai area. Liugui district office was also active in promoting this industry. Based on the above-mentioned results, this study is expecting to benefit the promotion and development of the Cross Industry in Baolai.
Silveira, António Manuel da Silva da. "A influência circadiana, tipo de bicicleta e piso - estudo comparativo de parâmetros fisiológicos e biomecânicos em ciclistas de BTT". Doctoral thesis, 2018. http://hdl.handle.net/10316/80369.
Pełny tekst źródłaObjetivo: o objetivo desta tese é contribuir para um aprofundamento do conhecimento na área do ciclismo, visando a rentabilização do treino das capacidades físicas em BTT e estrada. Metodologia: participaram no estudo 16 ciclistas do sexo masculino (34,81 ± 5,76 anos; 52,3 ± 3,9 mL/kg/min de VO2max relativo, 4,65 ± 0,36 W/kg de potência relativa) que realizaram quatro protocolos em situação real de campo variando o tipo de bicicleta e o piso, um protocolo realizado em rolos e um protocolo incremental para determinação dos parâmetros ventilatórios (consumo máximo de oxigénio e limiares ventilatórios). A tese é composta por cinco estudos: no primeiro, realizamos a caracterização da amostra através da avaliação cineantropométrica e de um protocolo incremental contínuo com monitorização do consumo máximo de oxigénio e da lactatemia visando a caraterização bioenergética. O estudo dois avalia o efeito cronobiológico na realização de tarefas típicas, comparando o impacto do mesmo protocolo em BTT realizado de manhã e de tarde, através da análise das variáveis potência, frequência cardíaca, lactatemia e frequência (cadência) de pedalada. Os estudos três e quatro compararam o impacto induzido pelo tipo de bicicleta (estrada e BTT) e do piso (terra e asfalto) na variáveis referidas em protocolos de idêntico desenho. O estudo 5 visa comparar os resultados das referidas variáveis num protocolo de campo e num protocolo em rolos. Principais resultados: a amostra situa-se num nível competitivo intermédio. Quando comparado o comportamento das diferentes variáveis do desempenho no protocolo realizado de manhã com o da tarde, excetuando a cadência da pedalada, não foram encontradas diferenças nas restantes variáveis controladas. Ao compararmos diferentes tipos de piso foram registadas diferenças nas potências média e máxima. A comparação dos resultados obtidos com diferentes bicicletas unicamente evidenciou diferença na variável potência média. Finalmente, quando se comparou um protocolo de campo com um protocolo em rolos, verificaram-se diferenças nas variáveis frequência cardíaca máxima, potência máxima, cadência e lactato final. Conclusões: o confronto dos resultados obtidos nos diferentes estudos por nós realizados revelam a existência de alterações no impacto fisiológico e mecânico para uma estimulação aparentemente semelhante, em terreno e laboratório. Foi possível verificar uma maior produção de potência com a bicicleta de BTT, em estrada. Através da análise da resposta da frequência cardíaca e da potência, verificaram-se diferenças nos resultados obtidos nos protocolos de campo realizados: as diferentes bicicletas e os diferentes pisos não produzem alterações significativas na frequência cardíaca mas, pelo contrário, produzem alterações na potência mecânica externa, condicionando o impacto das adaptações induzidas pelo treino.
Objective: the objective of this thesis is to contribute to deepen the knowledge of cycling area broadening, aiming improvements in the physical skills in mountain bike (MTB) and road cycling training. Methodology: sixteen male cyclists have participated in the study (34,81 ± 5,76 years; 52,3 ± 3,9 mL/kg/min of VO2max relative, 4,65 ± 0,36 W/kg of relative power), who have followed four protocols in situation of field experience varying the type of bicycle and ground. A protocol was made in indoor roller training and another incremental protocol to define ventilator parameters (maximum oxygen consumption and ventilator thresholds). The thesis is composed by five studies: in the first study, we did a sample characterization through the cineanthropometric evaluation and through the incremental and continuous protocol monitoring the maximum oxygen and lactatemia consumption, aiming the bioenergetic characterization. The second study evaluates the chronobiological effect in typical tasks realization, comparing the impact of the same record on MTB made in the morning or the afternoon, through the analysis of power, heart rate, blood lactate concentration and pedaling frequency (cadence). Studies three and four compare the induced impact by the type of bicycle (road and MTB) and the type of ground (tarmac and soil) in the referred variables using protocols with similar design. Study five aims to compare the findings of the referred variables in a field protocol and in an indoor roller protocol. Main findings: the sample is in a medium competitive level. When comparing the behavior of the different variables in the performance of morning and afternoon protocol, excepting the pedal cadence, there weren’t found differences in the rest of the controlled variables. When we compare different types of ground there were registered differences in average and maximum power. The comparison of the obtained results with different bicycles only demonstrated differences in the average power variable. Finally, when the field protocol was compared with the one in indoor roller, differences were verifiable in the variables of maximum heart rate, maximum power, cadence and final lactate. Conclusions: the comparison of obtained results in our different studies indicates the existence of different physiological and mechanical variations to a seemingly similar stimulation in field and laboratory tests. It was possible to verify a major power output with the MTB bicycle on the tarmac surface. Through the analysis of the heart rate and power outputs, they were found differences in the results of field protocols: the different bicycles and different grounds don’t produce significantly variations in heart rate but, on the contrary, they produce power output variations making a different impact in the induced training adaptations.
Lu, Ping-cheng, i 呂秉澄. "Top-down design for mountain bikes". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/97699469946831818541.
Pełny tekst źródła國立臺灣科技大學
機械工程系
97
The traditional way of mountain bike (MTB) design is composed of many independent stages, thus rendering a bad integration of component design and structural analysis. In addition, mechanical analysis is often undertaken for each single component, without the consideration of the entire structure of MTB. This leads to little chance of finding and solving relevant structural problems in the early design stage. To reduce the impacts of these drawbacks, this thesis introduces the concept of “top-down design” and evolves a new design process for MTB. Firstly, this study uses layout and skeletons in Pro/ENGINEER to describe the structure of the MTB in a parametric manner. By doing so, we can improve the design process since it allows us to design more efficient and less time consuming. Secondly, we simulate MTB’s working condition and analyze forces which act on the MTB’s frame to see if the current structure works well under that condition. Finally, an optimization process will be done to optimize crucial parameters which are obtained from a sensitivity analysis, and use the optimal parameters to modify the initial geometry.
Chen, Shiau-Rung, i 陳孝榮. "Optimum Design of Rear Suspension of Mountain Bikes". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52548645568983673559.
Pełny tekst źródła龍華科技大學
機械系碩士班
91
The purpose of this research is to optimize the design parameter for the rear suspension system of mountain bikes that include the rear frame’s size, angle, and rear spring stiffness and damping ratio. The Taguchi method is used to optimize the design parameter for the rear suspension system. The Pro/ENGINEER drafted the 3D model for the rear frame system. Then we simulate the mountain bikes passing through a bumper to analyze the suspension character. After that the finite element software and life assess software was employed to figure out the optimization rear suspension system parameter which to make the frame of rear suspension system have the minimum acceleration and the most long service life. The conclusion of this research is that the stiffness of rear spring has the most influence for the minimum acceleration of rear suspension system. The most contributed parameter of the rear suspension system for the service life of the frame is the length of chain stay length.
Tseng, Po-Sen, i 曾柏森. "Vibration Analyses of Mountain-Bikes Subjected Different Forcing Functions". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/36614812378224828402.
Pełny tekst źródła華梵大學
機電工程學系博碩專班
99
Abstract The purpose of this paper is to analysis effects of shock absorbers on the dynamic behaviors of mountain-bikes subjected to forcing functions by using Solid work and ADAMS. In this paper, the structure of the bike consists of eight parts and two absorbers connected between the parts. The material properties, masses, and constrained conditions of parts are defined in ADAMS. Front and rear absorbers are described by using both the spring coefficient and the damping coefficient. In the analysis of simulation, the bike is subjected to periodic forcing functions can be written as the sum of harmonic functions using Fourier series. The corresponding Fourier coefficients are determined analytically and the Fourier series of the forcing function can be defined in ADAMS. Effects of spring coefficient and the damping coefficient of the front and rear absorbers on the position of center mass of the bike are examined. Keywords: Absorber, ADAMS, Constrained condition, Spring coefficient, Damping coefficient, Fourier series, Periodic forcing function
Hwang, Ruey-Horng, i 黃瑞宏. "Design on the System of Rear Suspension Mechanisms of Mountain Bikes". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/09155081740347927033.
Pełny tekst źródła國立中山大學
機械工程學系研究所
89
With the prevalence of leisure sport, riding mountain bikes becomes an enormous vogue today. The mountain bikes undoubtedly have become one of the most popular products in the leisure sport market. Based on its superior standard of operating quality and the demand of comfortableness, the requirement of the outstanding rear suspension mechanism of mountain bikes is one of the crucial components in the design procedure. The purpose of this work is to provide a design procedure of the system of rear suspension mechanisms of mountain bikes by using the concept of engineering design method. First, to investigate the essential requirements of the system of rear suspension mechanisms of mountain bikes is started. Then the design targets of this research are decided further in order to establish the requirement book for the system of rear suspension mechanisms of mountain bikes. Second, the kinematic design of rear suspension mechanisms is proceeding. Computer Aided Tried and Error program is utilized for synthesizing the dimensions of rear suspension mechanisms to meet the requirement of functions. Finally, topology theory is applied to synthesize the frames of mountain bikes. Furthermore, the systematic design procedure is developed to perform the embodiment design of the system of rear suspension mechanisms of mountain bikes.
Chang, Wen-Chey, i 張文曲. "The Experimental Design on the Shock Absorption Study of Mountain Bikes". Thesis, 1996. http://ndltd.ncl.edu.tw/handle/29940954415679699338.
Pełny tekst źródła國立中興大學
應用數學系
84
PU及發泡材料已常見應用於登山自行車減振的阻尼彈性體( Elastomer). 因為高分子材料具非線性力學行為,而且此應用已非小變形 的範疇, 因此使用線性的振動數學模式來預測減振效果, 可能產生巨大誤 差, 所以有必要全尺寸的振動實驗, 以掌握實際的振動行為, 並做為修正 設計成數學模式的依據. 吾人在此設計一套振動實驗機構, 實際模擬 登山自行車行駛的振動行為, 以測試PU材料的減振效果. 同時亦針對車 架進行模態測試實驗, 實驗中就有載重與無載重車架, 及預壓PU材料的車 架與無預壓PU材料的車架之自然頻率與阻尼比, 分別做比較. PU and foam materials have been widely used as elastomers in shock absorber of mountain bikes. Because of nonlinear mechanical behavior and large deformation ofmaterials, the prediction of anivibration by using mathematical models of linearvibration may produce a huge error. Therefore, it is necessary to do full scaleexperiments. In order to observe realistic vibration behavior. According to theexperimental results, the modification of design or mathematical model can beaccomplished. Here, we design and make an experiment mechanism to test a full scale mountain bike under harmonic and random dynamic loading, respectively. In order tounderstand more dynamic behavior of the experimented mountain bike, the naturalmodes and the mode shapes are also found.