Relevant bibliographies by topics / FEA

Academic literature on the topic 'FEA'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 September 2023

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Journal articles on the topic "FEA"

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Jin, Wan-Ting, Min Yang, Shuang-Shuang Zhu, and Zhao-Hui Zhou. "Bond-valence analyses of the crystal structures of FeMo/V cofactors in FeMo/V proteins." Acta Crystallographica Section D Structural Biology 76, no. 5 (April 15, 2020): 428–37. http://dx.doi.org/10.1107/s2059798320003952.

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The bond-valence method has been used for valence calculations of FeMo/V cofactors in FeMo/V proteins using 51 crystallographic data sets of FeMo/V proteins from the Protein Data Bank. The calculations show molybdenum(III) to be present in MoFe7S9C(Cys)(HHis)[R-(H)homocit] (where H4homocit is homocitric acid, HCys is cysteine and HHis is histidine) in FeMo cofactors, while vanadium(III) with a more reduced iron complement is obtained for FeV cofactors. Using an error analysis of the calculated valences, it was found that in FeMo cofactors Fe1, Fe6 and Fe7 can be unambiguously assigned as iron(III), while Fe2, Fe3, Fe4 and Fe5 show different degrees of mixed valences for the individual Fe atoms. For the FeV cofactors in PDB entry 5n6y, Fe4, Fe5 and Fe6 correspond to iron(II), iron(II) and iron(III), respectively, while Fe1, Fe2, Fe3 and Fe7 exhibit strongly mixed valences. Special situations such as CO-bound and selenium-substituted FeMo cofactors and O(N)H-bridged FeV cofactors are also discussed and suggest rearrangement of the electron configuration on the substitution of the bridging S atoms.
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Allen, Michael D., José A. del Campo, Janette Kropat, and Sabeeha S. Merchant. "FEA1, FEA2, and FRE1, Encoding Two Homologous Secreted Proteins and a Candidate Ferrireductase, Are Expressed Coordinately with FOX1 and FTR1 in Iron-Deficient Chlamydomonas reinhardtii." Eukaryotic Cell 6, no. 10 (July 27, 2007): 1841–52. http://dx.doi.org/10.1128/ec.00205-07.

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ABSTRACT Previously, we had identified FOX1 and FTR1 as iron deficiency-inducible components of a high-affinity copper-dependent iron uptake pathway in Chlamydomonas. In this work, we survey the version 3.0 draft genome to identify a ferrireductase, FRE1, and two ZIP family proteins, IRT1 and IRT2, as candidate ferrous transporters based on their increased expression in iron-deficient versus iron-replete cells. In a parallel proteomic approach, we identified FEA1 and FEA2 as the major proteins secreted by iron-deficient Chlamydomonas reinhardtii. The recovery of FEA1 and FEA2 from the medium of Chlamydomonas strain CC425 cultures is strictly correlated with iron nutrition status, and the accumulation of the corresponding mRNAs parallels that of the Chlamydomonas FOX1 and FTR1 mRNAs, although the magnitude of regulation is more dramatic for the FEA genes. Like the FOX1 and FTR1 genes, the FEA genes do not respond to copper, zinc, or manganese deficiency. The 5′ flanking untranscribed sequences from the FEA1, FTR1, and FOX1 genes confer iron deficiency-dependent expression of ARS2, suggesting that the iron assimilation pathway is under transcriptional control by iron nutrition. Genetic analysis suggests that the secreted proteins FEA1 and FEA2 facilitate high-affinity iron uptake, perhaps by concentrating iron in the vicinity of the cell. Homologues of FEA1 and FRE1 were identified previously as high-CO2-responsive genes, HCR1 and HCR2, in Chlorococcum littorale, suggesting that components of the iron assimilation pathway are responsive to carbon nutrition. These iron response components are placed in a proposed iron assimilation pathway for Chlamydomonas.
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Brauer, David J., Gerd Hasselkuß, Sibbele Hietkamp, Herbert Sommer, and Othmar Stelzer. "Lineare Oligophosphaalkane, XI [1] Stabilisierung von Phosphiniden, PH, im Clusteryerband — Röntgenstrukturanalyse von Fe4(CO)10[(μ2-PPri)2CH2](μ2-PPriMe)(μ2-H)(μ4-PH)." Zeitschrift für Naturforschung B 40, no. 7 (July 1, 1985): 961–67. http://dx.doi.org/10.1515/znb-1985-0719.

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Abstract Reaction of HPriP-CH2-PPriH with Fe2(CO)9 in a molar ratio of 1:2 produces a mixture of cluster compounds from which Fe4(CO)10[(μ2-PPri)2CH2](μ2-PPriMe)(μ2-H)(μ4-PH) could be isolated by liquid chromatography. X-ray structural analysis shows a planar trapezoid arrangement for the four iron atoms (Fe1 -Fe2 2,648(1), Fe2 -Fe3 2,790(1), Fe3 -Fe4 2,643(1), Fe1 --Fe4 4,109(1) Å ) capped by the novel bidentate phosphido bridge (μ2-PPri)2CH2 and the unsubstituted phosphinidene, PH( Fe1 - P4 2,284(1), Fe2 - P4 2,410(1), Fe3 - P4 2,405(1), Fe4 - P4 2,288(1), P4 - H1 1,39(4) Å).
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Ashcroft, Francesca. "Slut: Fea." New Writing 6, no. 3 (November 2009): 238–48. http://dx.doi.org/10.1080/14790720903556262.

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Thilmany, Jean. "Fossils and FEA." Mechanical Engineering 134, no. 03 (March 1, 2012): 44–47. http://dx.doi.org/10.1115/1.2012-mar-5.

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This article explores the application of finite element analysis (FEA) in studying the evolution of animals, including dinosaurs. Scientists have applied the method to determine how dinosaurs originally looked and functioned, and how they and other animals changed and evolved through the years. FEA is a useful tool to reconstruct the mechanical behavior of the muscle and skeletal system in zoological and paleontological studies because it is non-invasive and reconstructs stress at multiple sites and depths throughout the skeleton. It can be used to study extinct animals by way of their fossilized remains and can deal with complex geometries and load conditions. FEA is now routinely used to interpret skeletal forms for function in both medical and biological applications. The scientists believe that FEA will hopefully allow to see the effect of eating hard foods, such as the belemnites with their bullet-shaped guards. FEA allows a far more intricate, accurate, and precise picture of the bone to be used in studies.
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Battaglino, Paula, Marcela Lavandera, Romina Pereyra, and Yamile Tournie. "Te llamaré fea." Nimio, no. 7 (September 21, 2020): e026. http://dx.doi.org/10.24215/24691879e026.

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El presente trabajo tiene como objetivo analizar una serie de documentos que se integran bajo la temática mujeres barbudas, pertenecientes al Archivo de Redacción del diario Crónica. Compuesta por fotografías y por recortes periodísticos, esta selección en particular pretende dar cuenta de cómo se construye la otredad en el imaginario popular. En nuestro caso, nos referiremos al uso de imágenes de mujeres con hirsutismo que fueron catalogadas como fenómenos ante los ojos de la sociedad.
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Yang, Jian Guo, Wei Fu, Jia Shuang Gao, Xue Song Liu, Zhi Bo Dong, and Hong Yuan Fang. "Research of the Finite Element Method to Welding Simulation in Virtual Manufacture Environment." Applied Mechanics and Materials 88-89 (August 2011): 735–40. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.735.

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A new thinking was introduced that combine finite element analysis(FEA) for welding process simulation with virtual manufacture(VM), it is significant research according to comparison of FEA for welding process and VM, parameters input by FEA pre-processor and by VR technology, FEA results cab be shown by FEA post-processor and by VR technology. The framework for welding FEA based on VM was proposed and some key technologies were also discussed.
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De Vleeschouwer, M., J. Dille, and P. Diamantopoulos. "Customised FEA/CFD modelling." Journal of Biomechanics 39 (January 2006): S423. http://dx.doi.org/10.1016/s0021-9290(06)84721-4.

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Deitz, Dan. "FEA Makes Airframes Safer." Mechanical Engineering 120, no. 01 (January 1, 1998): 64–65. http://dx.doi.org/10.1115/1.1998-jan-3.

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This article focuses on data gathered during the controlled destruction of a Boeing 747 airliner are helping engineers to identify ways of strengthening aircraft to make them less vulnerable to an internal explosion. Even though it may not help engineers understand the specific events in the crash of Flight 800, a controlled explosion of a Boeing 747 by the British Defence Evaluation Research Agency (DERA) , based in London, could point the way to controlling the damage from airliner explosions in the future. The 747-1 00 had been an attraction at the Bruntingthorpe Aerodrome in Leicestershire, England, before it was purchased by the British Ministry of Defence and the US Federal Aviation Administration (FAA). Initially, the meshes were too coarse for the dynamic analyses to be used in the test, so engineers refined them accordingly in the blast area. Using new features in MSC/DYTRAN 4, the team will model the airframe as a series of layers, which is representative of the lining concepts to be tested.
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Dietz, Dan. "Preventing Rollover with FEA." Mechanical Engineering 120, no. 11 (November 1, 1998): 76–77. http://dx.doi.org/10.1115/1.1998-nov-4.

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This article discusses that event-simulation software can help engineers improve the safety of a military transport vehicle, while reducing the number of prototypes and shortening the design cycle. US Army's Tank and Automotive Command (TACOM) unit brought the truck's frame design to AM General with recommendations for a rollover protection structure. The AM General design team created plans for a T-shaped configuration to be added to the original truck frame that would protect occupants during a rollover accident. AM General stress analyst performed finite element analysis with Mechanical Event Simulation, including both Linear and Nonlinear Stress Analysis software from Algor Inc. of Pittsburgh. When the prototype asses its laboratory test, AM General will immediately manufacture an additional 20 units for both physical and field testing. This may include an armored variant for field testing in Bosnia, an area with rugged topography. TACOM plans to modify other M 939/A1 / A2 series trucks on an as-needed basis; they will install the rollover protection structures on trucks in use where conditions like rough terrain make rollover accidents more likely.
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Dissertations / Theses on the topic "FEA"

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Spruegel, Tobias C., and Sandro Wartzack. "Das FEA-Assistenzsystem – Analyseteil FEdelM." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-215130.

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Die simulative Absicherung von Produkten in den frühen Phasen der Produktentwicklung wird immer wichtiger, um den Anforderungen nach steigender Effizienz gerecht zu werden. Da das Angebot an erfahrenen Berechnungsingenieuren mit langjähriger Berufserfahrung begrenzt ist gilt es weniger erfahrene Simulationsanwender bei der Durchführung von aussagekräftigen Finite-Elemente-Simulationen zu unterstützen. Die Autoren stellen im Rahmen des Beitrags das Konzept des Analyseteils FEdelM eines FEA-Assistenzsystems vor, welches strukturmechanische Finite-Elemente (FE) Simulationen auf Plausibilität überprüft und auftretende Fehler möglichst automatisiert zu erkennt und behebt. Hierbei werden die einzelnen Module und deren Verknüpfungen untereinander und zu anderen Anwendungen vorgestellt.
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Elgström, Eskil. "Practical implementation of hyperelastic material methods in FEA models." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5654.

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This thesis will be focusing on studies about the hyperelastic material method and how to best implement it in a FEA model. It will look more specific at the Mooney-Rivlin method, but also have a shorter explanation about the different methods. This is due to problems Roxtec has today about simulating rubber takes long time, are instable and unfortunately not completely trustworthy, therefore a deep study about the hyperelastic material method were chosen to try and address these issuers. The Mooney-Rivlin method (which is a part of the hyperelastic material method) is reliant on a few constant to represent the material, how to obtain these constants numerical and later implement these is suggested in this thesis as well. The results is the methodology needed to obtain constants for Mooney-Rivlin and later how to implement these in FEA software. In this thesis the material Roxylon has been studied and given suggestion on these constants as well as an implementation of the given material.
För en bra simulering utav hyperelastiska material, exempelvis för gummi, har detta examensarbete fokuserat på att undersöka hyperelastiska material metoder och hur man kan implementera det i FEA program.
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Schatt, Nathan A. "Finite Element Modeling of Ultrasonic Wire Bonding on Polyvinyl Acetate-Nanocomposite Substrates." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396634471.

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Lin, Bingcan. "A new FEA modelling of porous solids." Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59600.

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Urskog, Thorbjørn Solvoll. "ANALYSE AV ALUMINIUMEKSTRUDERING VED EKSPERIMENTER OG FEA." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24544.

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Denne rapporten er sammensatt av to deler, og starter med et bredt teoretisk fundament om ekstrudering, i sær grad, foroverekstrudering. Det meste av teori er hentet fra boken «APPLIED METAL FORMING» skrevet av Henry Sigvart ValbergDet er tidligere gjennomført laboratorieeksperimenter ved NTNU, der stangekstrudering er blitt belyst dersom bærekanalen ikke er parallell. Dessverre eksisterer det ikke grundige eller gode rapporter om disse eksperimentene, slik at en del av denne oppgaven har vært å beskrive, samt rapportere hvilke testresultater som kom frem i disse eksperimentene. Under laboratorieeksperimentene fremkom det for to av fire tester et uventet mønster på ekstrudatet, såkalt bambooing. Det ble derfor interessant å se på om dette fenomenet også kom frem ved datasimuleringer. Modeller av matrisene er blitt konstruert og testet i programvaren DEFORM og sammenlignet med de tidligere laboratorieeksperimentene. Etter flere testforsøk var det mulig å se enkelte sammenhenger mellom presskraft og bambusmønsteret. Simuleringene viste at dersom bæreveggen er tilstrekkelig lang oppstår det luftlommer mellombærevegg og bolt. Dette fører til ujevn friksjon og lugging for stempelet. Slike luftlommer danner sannsynligvis bambusmønster på ekstrudatet I del to av denne rapporten er modellen fra prosjektoppgaven optimalisert. Siden den ikke kunne gjennomføres i prosjektoppgaven ble modellen endret, etter anbefaling fra SFTC, og retestet.Resultater fra undersøkelser, prøver og simuleringer er oppsummert og diskutert i eget kapittel. Rapporten er skrevet i Microsoft Word, de mest komplekse figurene er bygd i Microsoft NX 8.0, mens datasimuleringer er gjennomført i DEFORM 2D og DEFORM 3D versjon 10.1.2.
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Weerakoon, Prasad. "Multi-User Methods for FEA Pre-Processing." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3255.

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Collaboration in engineering product development leads to shorter product development times and better products. In product development, considerable time is spent preparing the CAD model or assembly for Finite Element Analysis (FEA). In general Computer-Aided Applications (CAx) such as FEA deter collaboration because they allow only a single user to check out and make changes to the model at a given time. Though most of these software applications come with some collaborative tools, they are limited to simple tasks such as screen sharing and instant messaging. This thesis discusses methods to convert a current commercial FEA pre-processing program into a multi-user program, where multiple people are allowed to work on a single FEA model simultaneously. This thesis discusses a method for creating a multi-user FEA pre-processor and a robust, stable multi-user FEA program with full functionality has been developed using CUBIT. A generalized method for creating a networking architecture for a multi-user FEA pre-processor is discussed and the chosen client-server architecture is demonstrated. Furthermore, a method for decomposing a model/assembly using geometry identification tags is discussed. A working prototype which consists of workspace management Graphical User Interfaces (GUI) is demonstrated. A method for handling time-consuming tasks in an asynchronous multi-user environment is presented using Central Processing Unit (CPU) time as a time indicator. Due to architectural limitations of CUBIT, this is not demonstrated. Moreover, a method for handling undo sequences in a multi-user environment is discussed. Since commercial FEA pre-processors do not allow mesh related actions to be undone using an undo option, this undo handling method is not demonstrated.
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Vareskic, Srdjan. "Utmattningsanalys av tryckkärl i enlighet med SS-EN 13445-3." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28737.

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Detta examensarbete har utförts i samarbete med Fagerström Industrikonsult AB i Helsingborg. Fagerström Industrikonsult AB är ett ingenjörsföretag som har specialiserat sig på mekaniska och mekatroniska produkter inom flera branchområden. Ett av företagets tidigare projekt, som bland annat bygger på tryckbärande kärl och som kommer återanvändas för ett nytt projekt, är i behov av en uppdaterad analys mot utmattningsbrott.För att en tryckbärande utrustning skall kunna säljas och användas inom Europa, måste tillverkarna följa det Europeiska direktivet 97/23/EG, även kallat PED-direktiv. Detta direktiv sätter regler för konstruktion, tillverkning, märkning och kontroll. I Sverige finns denna beskrivning i Arbetsmiljöverkets författnings-samling (AFS 1999:4 2011). För att uppfylla alla de konstruktionsmässiga och tillverkningsmässiga krav på tryckkärlet som ställs i PED direktivet, så måste harmoniserade standarder användas. I detta arbete används tryckkärlsstandarden (SS-EN 13445-3: 2014) som sätter regler för design och verifiering av tryckbärande anordningar.Ett av projekten som finansierats av den Europeiska kommissionen, visade att 25% av alla tryckbärande anordningars haverier beror på utmattning. Tryckkärl är den typ av tryckbärande anordning, som är mest utsatt för skador orsakade av utmattning. Utmattningsbrott har varit känt sedan början på 1800-talet och man har länge studerat detta fenomen. Man har efter lång tids arbete hittat metodik för att ta fram analytiska modeller och prediktionstekniker samt säkra och noggranna livslängdsberäkningar för stålkonstruktioner. Fagerström Industrikonsult AB söker idag en metod för att utföra utmattningsanalys på tryckkärl i enlighet med tryckkärlsstandarden där linjärstatisk analys utförs med finita elementmetoden. Företaget eftersträvar också mer kunskap inom ämnet för att ge konstruktörerna bättre kännedom om utmattningsproblematiken samt ge möjlighet att redan i konstruktionsstadiet kunna sätta rimliga krav på tillverkning ur mekaniskt utmattningsperspektiv.
This master thesis has been carried out in collaboration with Fagerström Industrikonsult AB in Helsingborg. Fagerström Industrikonsult AB is an engineering company, specialized in mechanical and mechatronic products across a wide range of industry segments. One of the company's previous project, which is among other sub-products based on pressurized vessels, and that will be reused for a new project, needs an updated analysis against fatigue failure.In order to sell or use a pressurized equipment in Europe, the manufacturers must comply with the European Directive 97/23/EC, also called PED-directive. This directive sets the rules for design, production, marking and inspections. In Sweden, this directive is described in “Arbetsmiljöverkets Författningssamling” (AFS 1999:4 2011). In order to meet all the design and manufacturing requirements for pressure vessels that are required by the PED Directive, it is required to use harmonized standards. In this thesis, pressure vessel standard (SS-EN 13445-3: 2014) is used, which sets the rules for design and verification of pressure vessel.One of the projects funded by the European Commission, showed that 25 % of all pressure equipment failure are caused by fatigue. Pressure vessel is one type of these pressure equipment, which is most vulnerable to damage caused by fatigue. Fatigue failure has been known since the beginning of 19th century and this phenomenon has been studied for a long time. Under this extensive period of time, methods have been succefully developed for analytical models and prediction techniques as well as safe and accurate life calculations for steel structures. Fagerström Industrikonsult AB is today seeking a method to perform fatigue analysis of pressure vessels in accordance with European pressure vessel standard, where the linear static analysis is performed using the finite element method. The company is also pursuing more knowledge of the subject so its designers have more understanding of fatigue phenomena in order to be able to set reasonable requirements during design stage for production and in order to prevent this phenomena.
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Prathan, Kanthee. "Optimization of sprue design for advanced investment casting through FEA analysis." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-50027.

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Investment casting is a complex manufacturing method with many challenges that must be solved before components of the right quality can be produced. TPC is a company that utilizes investment casting to produce a variety of products, lately the company has higher ambition in wanting to cast higher technical demanding component like heat resistant gas turbine blades. This requires a sprue that can control the filling process, by allowing the fallen stream of molten metal to enter the moulds cavity in a laminar manner. This study has implemented the product development process by (Ulrich, 2012) to develop the requested sprue. The primary support for this study is study material given by the company also known as "PMG running spreadsheet TPC" base on theory and equations from (Jolly, 2002), which is believed to have origin in sand casting manufacturing process. The project began with recreating the textbook model after establishing a number of control parameter such as critical velocity. Then simulation software Nova flow was used to evaluate the velocity and FEM in Solidworks to study if the dimension of the model can be directly use for investment casting process. The results show that it was not possible, therefore in the concept generating phase only theory of casting was used to create new concept. Then 3 existing sprues were chosen for benchmarking to gain deeper understanding about their design intension. One of the concepts was inspired by the CEO Mark Irwin “concentric pipe design” and in total 10 concepts were created of which 6 were tested for both flow and FEM analysis. 2 concepts were chosen for further development which also became 2 final concepts, after 3 iterations of improvement. These concepts show that many improve in terms of laminar filling and higher yield than the existing benchmark sprues. Although further development is required.   The analysis shows that every step in the project has its own flaws, but that is the nature of being an engineer, as long as the problem encountered can be viewed with critical and analytical eyes. A well-considered and balanced solution can be provided, although nothing of this can be certain before a trail of test can provided to confirm any assumptions which is not included in this work.   The discussion section processes the thoughts, experience, and doubts about the project in general and the decision making leading to this report and what could have been done differently. The most significant lesson learn from this is that section is when solving a complex issue there must be very clear delimitations and well-defined goals to every specific solution. Otherwise the workload will be extensive and cause more harm than necessary.   The conclusion of this project shows that two concepts generated with the help from the product development process work better than the case study, which can be found in section 4.3, that was based on “PMG running spreadsheet TPC” calculation model, from the velocity perspective. To achieve this, the sprue uses its own geometry constrain and constricts the flow by collecting the molten metal in a “well” before the calmer stream could be distributed throughout the whole cavity. Indirectly this means that the studied material given from TPC AB could not be directly implemented into the investment production process. The given material should be seen as a complement and guidance when creating new sprues. Concerning the FEM analysis tool, it was helpful in this project in evaluating the sprues geometry expose to the assumed force in the production process to avoid unnecessary failure and therefore waste. Although if the company do not intend further work with the development of other sprues then this method is not necessary and would not have significant value to their current manufacturing process.
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Koskenranta, Mikael. "Optimisation of ceiling attachment for AVPOS using FEA." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11143.

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In product manufacture and assembly it is important to lower materials usage and assembly timewhile retaining a safety margin against structural failure. In this project the ceiling attachment of theAVPOS offloading arm is redesigned based on objectives identified by Löfs Specialmaskiner. Theoriginal ceiling attachment is analysed using finite element analysis to identify any structuralweaknesses to be addressed during redesign. Based on information gained during the FEA threeconcepts are generated and rated based on their estimated assembly times, material usage, partscount and the cutting length for machining.One concept is selected for further topology optimisation and iterative FEA, where material isremoved from the selected concept design while maintaining safety objectives. The optimised designdeveloped during this project is shown to have a lower number of parts, lower usage of material andassembly time while retaining an overall FOS value of 4.In addition to redesigning the ceiling attachment, alternative bearings are also investigated whichchanges the existing ball bearings to a self-aligning sliding bearing with self-lubricating properties,lowering the machining tolerances as well as lowering the needs for service.This project contributes to lowering material usage and ease of assembly in the product AVPOS thatis manufactured by Löfs Specialmaskiner. The redesigned ceiling attachment along with thesuggested bearings will likely simplify future manufacturing as well as lower any concerns for damageto people and property as a result of structural failure.
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Lim, Chee Wang. "Dynamic analysis of aerostatic guideway and FEA model development." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4485.

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A dynamically optimal design is essential for a motion system to perform high speed operation without compromising its accuracy, settling time and vibration specification. Good design practice which accounts for dynamic characteristics in the modelling of a motion system warrants higher performance precision machines and cuts down redevelopment effort to ‘patch’ inherent shortcoming of the machine dynamics. This research aimed to accurately describe the non-linear dynamics of a non-mechanical contact aerostatic guideway system in order to achieve an accurate FEA model of the design stage. The single axis aerostatic guideway is comprised of several machine in¬terfaces that impact the dynamic behaviour of the guideway. Modelling each air bear¬ing pad by a single stiffness element is not adequate to predict the guideway modal behaviour accurately. The aerostatic guideway has been broken down into several key machine interface elements. In-depth investigation of the air film and the air bearing mounting mechanism was carried out. A dedicated air film test rig was designed and built to acquire insight of the air film dynamic characteristics. It is observed that the mounting mechanism of the air bearing constitutes to a signifi-cant dynamic effect to the entire air bearing setup. Based on the findings of the mount-ing mechanism’s stiffness properties, a method was developed to estimate ‘true’ air gap heights which cannot be easily assessed and measured directly in most aerostatic guideway carriages. The estimation method enables a more rigorous FE model of the aerostatic guideway system. The comprehensive dynamic analysis methodology pro-posed in this research greatly increases the confidence and accuracy of the aerostatic guideway’s FE model.
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Books on the topic "FEA"

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La fea durmiente. New York: Scholastic Inc., 2004.

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Milward, Peter. Mai fea rondon. Tôkyô: Tôkyô Shoseki, 1993.

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La hermana fea. Barcelona: Edhasa, 2022.

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Espinosa, Miguel. La fea burguesía. Madrid: Alfaguara, 1990.

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Vale, Angelica. La Fea mas bella. S.l: Madera, 2007.

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Persona fea y ridícula. México, D.F: Secretaría de Cultura, Dirección General de Publicaciones, 2017.

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Aguirre, Eugenio. La suerte de la fea. México, D.F: Premià, 1986.

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Covito, Carmen. La suerte de la fea. Barcelona: Lumen, 1994.

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Covito, Carmen. La suerte de la fea. Santa Fé de Bogotá, Colombia: Grupo Editorial Norma, 1997.

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Ibarra, César. Las trampas de la fea. Culiacán: Honorable Ayuntamiento de Cuilacán, Instituto Municipal de Cultura, 2007.

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Book chapters on the topic "FEA"

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Labille, Jérôme, Natalia Pelinovskaya, Céline Botta, Jean-Yves Bottero, Armand Masion, Dilip S. Joag, Richard G. Forbes, et al. "Finite-Element Analysis (FEA)." In Encyclopedia of Nanotechnology, 860. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_100248.

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Pidaparti, Ramana M. "1D FEA Using ANSYS." In Engineering Finite Element Analysis, 107–53. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-031-79570-1_6.

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Kaneko, T., and T. Kanomata. "5.3.19 Mn x Fea–xAs." In Magnetic Properties of d-Elements, Alloys and Compounds Under Pressure, 356–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41834-1_197.

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Yabo, Yan. "Finite Element Analysis (FEA) Technology." In Digital Orthopedics, 35–46. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1076-1_4.

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Boldea, Ion, and Lucian N. Tutelea. "Thermal FEA of Electric Machines." In Electric Machines, 281–98. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003216018-7.

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Boldea, Ion, and Lucian N. Tutelea. "FEA of Electric Machines Electromagnetics." In Electric Machines, 221–79. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003216018-6.

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Kyratsis, Panagiotis, Anastasios Tzotzis, and J. Paulo Davim. "Fundamentals of 3D Finite Element Modeling in Conventional Machining." In 3D FEA Simulations in Machining, 13–46. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24038-6_2.

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Kyratsis, Panagiotis, Anastasios Tzotzis, and J. Paulo Davim. "3D Finite Element Simulation of CK45 Steel Face-Milling: Chip Morphology and Tool Wear Validation." In 3D FEA Simulations in Machining, 77–89. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24038-6_5.

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Kyratsis, Panagiotis, Anastasios Tzotzis, and J. Paulo Davim. "FEM-Based Study of AISI52100 Steel Machining: A Combined 2D and 3D Approach." In 3D FEA Simulations in Machining, 47–62. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24038-6_3.

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Kyratsis, Panagiotis, Anastasios Tzotzis, and J. Paulo Davim. "Experimental and 3D Numerical Study of AA7075-T6 Drilling Process." In 3D FEA Simulations in Machining, 63–75. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24038-6_4.

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Conference papers on the topic "FEA"

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Shin, Ki-Hoon. "FEA-Based Design of Heterogeneous Objects." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99295.

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Finite Element Analysis (FEA) is an important step for the design of structures or components formed by heterogeneous objects such as multi-materials, Functionally Graded Materials (FGMs), etc. The main objective of the FEA-based design of heterogeneous objects is to simultaneously optimize both geometry and material distribution over the design domain (e.g., Homogenization Design Method). However, the accuracy of the FEA-based design wholly depends on the quality of the finite element models. Therefore, there exists an increasing need for generating finite element models adaptive to both geometric complexity and material distribution. This paper introduces a method for FEA-based design of heterogeneous objects. At the design stage, a heterogeneous solid model is first created by referring to the libraries of primary materials and composition functions that are already available in the field of material science. The heterogeneous solid model is then discretized into an object model onto which appropriate material properties are mapped. Discretization converts continuous material variations inside an object into stepwise variations. Next, the object model is adaptively meshed and converted into a finite element model. The meshing algorithm first creates nodes on the iso-material curves (or surfaces) of heterogeneous solid models. Triangular (or tetrahedral) meshes are then generated inside each iso-material region formed by iso-material curves (or surfaces). FEA using commercial software is finally performed to estimate stress levels. This FEA-based design cycle is repeated until a satisfactory solution is obtained. If the design objective is satisfactory, the object model is fed to the fabrication system where a process planning is performed to create instructions for LM machines. An example (FGM pressure vessel) is shown to illustrate the entire FEA-based design cycle.
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Dang, J., J. Rhett Mayor, Jose Restrepo, S. Andrew Semidey, Ronald G. Harley, and Thomas Habetler. "Switched reluctance machine optimization method using current-fed FEA simulation." In 2015 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2015. http://dx.doi.org/10.1109/iemdc.2015.7409109.

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McAlpine, George. "Caution! FEA in Use." In Pipelines 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413012.051.

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Kamaya, Masayuki, and Toshihisa Nishioka. "Evaluation of Stress Intensity Factors by Finite Element Alternating Method." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2734.

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The finite element alternating method (FEAM), in conjunction with the finite element analysis (FEA) and the analytical solution for an elliptical crack in an infinite solid subject to arbitrary crack-face traction, is used for evaluating the stress intensity factor (SIF) of surface cracks. The major advantage of this method is that the SIF can be calculated by using the FEA results for an uncracked body. A newly developed system allows the FEAM to be performed by a simple method, which consists of the conventional FEA for an uncracked body and a subroutine for the FEAM alternating procedure. The SIFs are evaluated for semi-elliptical surface cracks on a plate and in a cylinder as well as interacting cracks on a plate. It is also shown that, by using fine mesh, the maximum error of the evaluation by the FEAM can be suppressed less than 2 percent.
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Johansson, Joel. "Manufacturability Analysis Using Integrated KBE, CAD and FEM." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49019.

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Finite element analyses (FEA) are often used to test product properties virtually. The process of setting up FEA is many times manual and not strictly formalized; the assumptions made in those calculations highly depend on the analysts’ former experiences and gut feeling. Sometimes there exist parametric FEA-models, but they are hard to interpret for others than the developers. These parametric FEA-models are also highly inflexible. It is beneficial to formalize and automate the process of developing such calculations in order to automate the product development process for mature and variant-rich products where predictions and validations using FEA are demanded in the whole or parts of the design space. Making the automated FEA-models more flexible and more transparent makes them live longer and be more available for engineers that are not FEA-specialists. The FEA-specialists will have more time to solve general problems rather than focusing on instances of the product. In this paper, a proposal is made on how to integrate Knowledge Based Engineering (KBE), CAD and FEM to make the automation of FEA flexible, transparent, and easy to use. The method proposed includes the usage of an inference engine that handles knowledge objects that connect to auxiliary software applications. In the paper, an implementation example is presented where toolsets for the rotary draw bending of aluminium tubing are analyzed for manufacturability.
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Adams, Matthew J., Anne K. Silverman, and Cameron J. Turner. "Pseudo Elimination of Geometry Dependence in Surrogate Models of Distributed Knee Loads From an Explicit Dynamic Finite Element Analysis." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47850.

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The premise of a total knee replacement (TKR) is to alleviate pain and increase joint mobility. The expected 20 year life span of the knee insert exceeds that of the standard patient given traditional wear and tear. With more active lifestyles, greater wear rates and shorter life spans are predicted for tibial inserts. Greater wear rates increase the probability that a patient will require additional surgery later in life. This research provides a knee loading model to estimate the pressure loading distribution through Finite Element Modeling (FEM). The publicly available patient data was used to eliminate the geometry dependence in a surrogate model of distributed knee loads from an explicit Finite Element Analysis (FEA). The developed method based upon FEM and FEA, produced two notable results. The secondary results showed the FEM accurately estimated the medial and lateral contact forces during the stance phase. However, the primary result was that the surrogate model successfully interpolated the contact surface forces using results from the FEA without requiring any knowledge of the geometry of the contact surfaces.
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Goplen, B., L. Ludeking, D. N. Smithe, M. K. Kodis, G. L. Jensen, and E. G. Zaidman. "Analysis of the FEA amplifier." In International Conference on Plasma Science (papers in summary form only received). IEEE, 1995. http://dx.doi.org/10.1109/plasma.1995.531561.

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Sekar Sethu, Raj, Salil Hari Kulkami, How Ung Ha, and Kok Heng Soon. "Wire pull FEA simulation comparison." In 2018 19th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). IEEE, 2018. http://dx.doi.org/10.1109/eurosime.2018.8369899.

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Hazwan, M. H. M., R. M. Farizuan, W. Rahman, H. Radhwan, Shafeeq Ahmad Shamim Ahmad, Khairunnisa Norli, Ndrieniza Anak Saini, Nur ‘Afifah Mazlan, and Nuruljannah Omar. "FEA: Automatic air freshener dispenser." In PROCEEDINGS OF GREEN DESIGN AND MANUFACTURE 2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0046604.

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Yoshida, Tomoya, Takashi Nishi, and Masayoshi Nagao. "Vertical bent thin-film FEA." In 2012 25th International Vacuum Nanoelectronics Conference (IVNC). IEEE, 2012. http://dx.doi.org/10.1109/ivnc.2012.6316909.

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Reports on the topic "FEA"

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Puckett, A. FEA stress analysis for SAFKEG 2863B. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/569116.

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CALS INDUSTRY STEERING GROUP WASHINGTON DC. CALS: White Paper Report on Functional Economic Analysis and the FEA Model (FEAM). Fort Belvoir, VA: Defense Technical Information Center, November 1993. http://dx.doi.org/10.21236/ada326291.

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Riglin, Jacob Daniel. Explicit FEA Analysis of SAVY Container Impact Angle. Office of Scientific and Technical Information (OSTI), February 2018. http://dx.doi.org/10.2172/1422912.

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Orzada, Belinda T., and M. Jo Kallal. FEA Consumer Needs Model: Looking Forward, Looking Back. Ames: Iowa State University, Digital Repository, November 2016. http://dx.doi.org/10.31274/itaa_proceedings-180814-1406.

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Fernandes, Huston. Thermal FEA for Front End Fixed Mask (SST). Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1525394.

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Witte H. FEA Simulations of Magnets with Grain Oriented Steel. Office of Scientific and Technical Information (OSTI), August 2012. http://dx.doi.org/10.2172/1056411.

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Guarino, V. Summary of FEA calculations of STAR support rings. Office of Scientific and Technical Information (OSTI), January 1994. http://dx.doi.org/10.2172/10122132.

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Rank, James. HEX SCW ID Absorber: Steady and Transient Thermal FEA. Office of Scientific and Technical Information (OSTI), December 2019. http://dx.doi.org/10.2172/1607362.

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Xie, C. L., M. Hailat, G. Newaz, Jr Mabesa, and J. R. Thermal-Electrical FEA of Localized Heating for MEMS Packaging. Fort Belvoir, VA: Defense Technical Information Center, November 2006. http://dx.doi.org/10.21236/ada521357.

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Smith, Cheyenne. An FEA Needs Model Evaluation of the Marching Band Uniform. Ames (Iowa): Iowa State University. Library, January 2019. http://dx.doi.org/10.31274/itaa.8836.

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