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Статті в журналах з теми "DESIGN FOR STRENGTH"

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Автор: Grafiati

Опубліковано: 11 вересня 2023

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1

Kress, G., P. Naeff, M. Niedermeier, and P. Ermanni. "Onsert strength design." International Journal of Adhesion and Adhesives 24, no. 3 (June 2004): 201–9. http://dx.doi.org/10.1016/j.ijadhadh.2003.09.007.

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2

HARAGA, Kosuke. "A Concept of Specified Design Strength and Allowable Design Strength in the Strength Design of Adhesively Bonded Joints." Journal of The Adhesion Society of Japan 50, no. 2 (2014): 53–58. http://dx.doi.org/10.11618/adhesion.50.53.

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3

Sinha, Dr Deepa A. "Compressive Strength of Concrete using Different Mix Design Methods." Indian Journal of Applied Research 4, no. 7 (October 1, 2011): 216–17. http://dx.doi.org/10.15373/2249555x/july2014/66.

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4

Bhat, Rayees Ahmad, and Mr Misba Danish. "Design of High Strength Concrete Using Superplastisizer and Stone Dust." International Journal of Trend in Scientific Research and Development Volume-2, Issue-5 (August 31, 2018): 529–47. http://dx.doi.org/10.31142/ijtsrd15867.

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5

Russo, G. "Design shear strength formula for high strength concrete beams." Materials and Structures 37, no. 274 (October 17, 2004): 680–88. http://dx.doi.org/10.1617/14016.

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6

Russo, G., G. Somma, and P. Angeli. "Design shear strength formula for high strength concrete beams." Materials and Structures 37, no. 10 (December 2004): 680–88. http://dx.doi.org/10.1007/bf02480513.

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7

Kim, Dae Geon. "Development of High-Strength Concrete Mixed Design System Using Artificial Intelligence." Webology 19, no. 1 (January 20, 2022): 4268–85. http://dx.doi.org/10.14704/web/v19i1/web19281.

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Анотація:

The quality inspection of high-strength concrete construction sites consists of a compressive strength test that is considered the most important, but this can be confirmed through a compressive strength test after 28 days of high-strength concrete application. Therefore, it is of paramount importance to ship high-quality products to ready-mixed concrete factories by increasing the reliability of the mixed design that affects high-strength concrete production. In addition, there is a need to develop an efficient management system for mixed design that determines high-strength concrete quality by measuring the mixing ratio of materials in the ready-mixed concrete factory production stage. This study used matrix laboratory(MATLAB) using Deep learning, a language that performs mathematics and engineering calculations based on matrices, and presented a mixed design model by adjusting the strength through input and output variables, learning data collection, model structure determination, learning error, and repetition results. The predicted mean value of 40 MPa was measured at 40.75 MPa, showing a difference of 0.75 MPa and 40 MPa, and the error rate was confirmed to be 4.13%. And the predicted mean value of 55 MPa was measured as 55.55 MPa, showing a difference between 55 MPa and 0.55 MPa, and the error rate was confirmed to be 1.73%. Through this study, the reliability of high-strength concrete quality management is secured by applying a high-strength concrete mixed design system using artificial intelligence(AI) and adjusting it in connection with all fields of the production process.

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8

Murakami, Yukitaka. "Product Liability and Strength Design." Journal of the Society of Mechanical Engineers 98, no. 925 (1995): 986–90. http://dx.doi.org/10.1299/jsmemag.98.925_986.

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9

Yoshida, Takashi, and Masaru Ishikawa. "Design of strength for plastic." Proceedings of The Computational Mechanics Conference 2004.17 (2004): 127–28. http://dx.doi.org/10.1299/jsmecmd.2004.17.127.

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10

Hsu, Wei Ting, Dung Myau Lue, and Chen Y. Chang. "An Investigation into the Strength of Concrete-Filled Tubes." Applied Mechanics and Materials 284-287 (January 2013): 1208–14. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1208.

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The design strength of concrete-filled tubes (CFT) is being calculated based on two approaches including the AISC and ACI methods. The AISC applies the steel column formulas with the use of coefficients for transforming the concrete into steel to determine the CFT design strength. The design strength of AISC is being evaluated through the use of two approaches including the plastic stress distribution and strain compatibility methods. This study used both the plastic stress distribution and strain compatibility methods to calculate the design strength of CFT, and compare the design strengths using these two methods. This study presents a more accurate numerical approach to evaluate the CFT columns including rectangular and square sections. The illustrated example is presented to demonstrate the step-by-step procedure to obtain the CFT design strength based on the AISC Specification. The provided design procedure for the strength evaluation of CFT columns enables those who need a better estimation on the CFT axial strengths based on the AISC Specification.

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11

Kuang, Yachuan, Pengcheng Liu, Qishi Zhou, Feiyang Fu, and Wei Li. "Analysis Method of Design Strengths of P. edulis Bamboo." Forests 13, no. 4 (March 29, 2022): 526. http://dx.doi.org/10.3390/f13040526.

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Анотація:

In order to determine the design strengths of P. edulis bamboo material, this research carried out a series of material tests on the full-culm P. edulis bamboo specimens, including compression tests parallel to the grain, bending tests, tension tests parallel to the grain, shear tests parallel to the grain and compression tests perpendicular to the grain. The standard values of different strengths for bamboo material were obtained by the Bootstrap method. The influence of the load combination and load effect ratio on the relationship between reliability index β and resistance factor γR was analyzed. A method for calculating the target reliability index of bending strength was proposed. The design strengths of the P. edulis bamboo material were determined and the adjustment method considering different design situations was also put forward. The research results show that the target reliability of the bending strength of bamboo material is suggested to be 3.57. With the same β value, γR is the maximum under the combination of constant load + snow load, and γR is the minimum under the combination of constant load + live load on the office building floor. Under the same load combination and load ratio, the shear strength along the grain has the maximum γR and the compression strength along the grain has the minimum γR. The design strengths of the P. edulis bamboo material were determined by the larger γR of two cases (one is that the load ratio of constant load over live load on the residential building floor is 1.0 and another is that the constant load over live load on the office building floor is 1.0). The design strengths can provide reference for the design and application of bamboo structure.

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12

Rotter, J. Michael. "Development of Proposed European Design Rules for Buckling of Axially Compressed Cylinders." Advances in Structural Engineering 1, no. 4 (October 1998): 273–86. http://dx.doi.org/10.1177/136943329800100404.

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Thin axially compressed cylinders are used in a wide range of civil engineering shell structures: towers, chimneys, tanks and silos. Design standards throughout in the world differ considerably in their strength predictions, and all are based on empirical lower bounds to laboratory test results. The chief reason for the scatter in strength assessments is the sensitivity to geometric imperfections, which naturally vary from one laboratory to another and according to the method of fabrication. This paper sets out some of the development behind the new proposed rules for the European standard on Strength and Stability of Shells. These rules cover cylinder buckling under axial compression alone, and the strength of internally pressurised cylinders. The design strengths are related to recent calculated buckling strengths, and an attempt is made to indicate the appropriate relationship between design assumed imperfections and tolerances during construction.

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13

Hertz, K. D. "Concrete strength for fire safety design." Magazine of Concrete Research 57, no. 8 (October 2005): 445–53. http://dx.doi.org/10.1680/macr.2005.57.8.445.

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14

Shen, C. L., P. H. Wirsching, and G. T. Cashman. "Design Curve to Characterize Fatigue Strength." Journal of Engineering Materials and Technology 118, no. 4 (October 1, 1996): 535–41. http://dx.doi.org/10.1115/1.2805953.

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Fatigue (S-N) data exhibit relatively large scatter. For design purposes, an S-N curve that characterizes fatigue strength is required. This curve should lie on the lower, or safe, side of the data. A method based on a modification of the Owen tolerance interval is proposed. The method is general and can be applied to nonlinear heteroscedastic data having runouts.

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15

Kanagasundaram, Subramaniam, and Bhushan L. Karihaloo. "Maximum Strength Design of Structural Frames." Journal of Structural Engineering 111, no. 6 (June 1985): 1267–87. http://dx.doi.org/10.1061/(asce)0733-9445(1985)111:6(1267).

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16

Haydl, Helmut M. "Allowable Strength Design of Mining Structures." Practice Periodical on Structural Design and Construction 21, no. 2 (May 2016): 04015015. http://dx.doi.org/10.1061/(asce)sc.1943-5576.0000273.

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17

KAWADA, Masakuni, and Koichi HIRATA. "M10 Strength Design for Stirling Engines." Proceedings of the Symposium on Stirlling Cycle 2005.9 (2005): 127–28. http://dx.doi.org/10.1299/jsmessc.2005.9.127.

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18

Sarrak, V. I., E. N. Artemova, and Yu G. Virakhovskii. "Design strength of metastable austenitic steels." Metal Science and Heat Treatment 29, no. 11 (November 1987): 856–57. http://dx.doi.org/10.1007/bf00707759.

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19

Kroll, Bill. "FACILITY DESIGN: Evaluating Strength Training Equipment." National Strength & Conditioning Association Journal 12, no. 3 (1990): 56. http://dx.doi.org/10.1519/0744-0049(1990)012<0056:este>2.3.co;2.

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20

Kroll, Bill. "FACILITY DESIGN: Selecting Strength Training Equipment." National Strength & Conditioning Association Journal 12, no. 5 (1990): 65. http://dx.doi.org/10.1519/0744-0049(1990)012<0065:sste>2.3.co;2.

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21

Antsiferov, V. N., N. N. Maslennikov, and A. A. Shatsov. "Design strength of steel-copper pseudoalloys." Soviet Materials Science 26, no. 6 (1991): 697–700. http://dx.doi.org/10.1007/bf00723661.

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22

Trahair, Nicholas S. "Strength design of cruciform steel columns." Engineering Structures 35 (February 2012): 307–13. http://dx.doi.org/10.1016/j.engstruct.2011.11.026.

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23

Leder, Helmut, Claus-Christian Carbon, and Robert Kreuzbauer. "Product-design perception and brand strength." Thexis 24, no. 2 (May 2007): 4–7. http://dx.doi.org/10.1007/bf03249147.

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24

Lyamina, Elena A., and Olga V. Novozhilova. "Design of equi-strength rotating disk." Modern Transportation Systems and Technologies 9, no. 1 (March 28, 2023): 122–34. http://dx.doi.org/10.17816/transsyst202391122-134.

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Анотація:

Background: Rotating disks, such as flywheels, are an important machine part of engines, which requires the development of the theoretical methods of their analysis and design. Aim: Determination of the profile of equi-strength rotating disks. Materials and Methods: Methods of the mathematical theory of elasticity and plasticity Results: Methodology for determining the profile of equi-strength rotating disks obeying the von Mises yield criterion and its application Conclusion: The methodology developed can be used to design equi-strength rotating disks subject to various combinations of internal and external pressures. It can be extended to more general yield criteria.

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25

Chen, Guofei. "Optimized Design Solutions for Roof Strength Using Advanced High Strength Steels." SAE International Journal of Materials and Manufacturing 3, no. 1 (April 12, 2010): 90–98. http://dx.doi.org/10.4271/2010-01-0214.

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26

Zhang, Mingyue, Yingying Zhang, Guangchun Zhou, and Hanyin Li. "Essential Design Strength and Unified Strength Condition of ETFE Membrane Material." Polymers 14, no. 23 (November 27, 2022): 5166. http://dx.doi.org/10.3390/polym14235166.

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This study proposes essential design strength and unified strength condition for ETFE membrane materials based on the structural state-of-stress theory and formula of strength. Firstly, the tested strain data of the uniaxial rectangle-shaped specimen are modeled to obtain its state-of-stress characteristic parameter. Then, the characteristic points in the evolution curve of the characteristic parameter are detected by the cluster analysis (CA) criterion. The characteristic points are the embodiment of the natural law from quantitative change to qualitative change of a system, which define the essential strength and the essential design strength of ETFE membrane materials. Further, the essential principal stresses are derived at the characteristic points in the evolution curves of the characteristic parameters obtained by the state-of-stress analysis of the strain data from the tests of air bubbling models and cruciform specimens. Both essential principal stresses and essential strength lead to the unified formula of strength for ETFE membrane materials. Additionally, the unified strength condition is derived for the design of ETFE membrane material structures. Finally, the essential strength, essential design strength, and the unified strength conditions are compared with the existing conditions, providing a rationality to update the existing analysis and design methods for determining the strength of ETFE membrane materials.

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27

Campione, G., A. Monaco, and G. Minafò. "Shear strength of high-strength concrete beams: Modeling and design recommendations." Engineering Structures 69 (June 2014): 116–22. http://dx.doi.org/10.1016/j.engstruct.2014.02.029.

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28

Arce, Andres, Anastasija Komkova, Jorn Van De Sande, Catherine G. Papanicolaou, and Thanasis C. Triantafillou. "Optimal Design of Ferronickel Slag Alkali-Activated Material for High Thermal Load Applications Developed by Design of Experiment." Materials 15, no. 13 (June 21, 2022): 4379. http://dx.doi.org/10.3390/ma15134379.

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Анотація:

The development of an optimal low-calcium alkali-activated binder for high-temperature stability based on ferronickel slag, silica fume, potassium hydroxide, and potassium silicate was investigated based on Mixture Design of Experiment (Mixture DOE). Mass loss, shrinkage/expansion, and compressive and flexural strengths before and after exposure to a high thermal load (900 °C for two hours) were selected as performance markers. Chemical activator minimization was considered in the selection of the optimal mix to reduce CO2 emissions. Unheated 42-day compressive strength was found to be as high as 99.6 MPa whereas the 42-day residual compressive strength after exposure to the high temperature reached 35 MPa (results pertaining to different mixes). Similarly, the maximum unheated 42-day flexural strength achieved was 8.8 MPa, and the maximum residual flexural strength after extreme temperature exposure was 2.5 MPa. The binder showed comparable properties to other alkali-activated ones already studied and a superior thermal performance when compared to Ordinary Portland Cement. A quantitative X-ray diffraction analysis was performed on selected hardened mixes, and fayalite was found to be an important component in the optimal formulation. A life-cycle analysis was performed to study the CO2 savings, which corresponded to 55% for economic allocation.

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29

Zhao, Zhi Li, Tao Wang, Hong Yuan Fang, and Jian Guo Yang. "Enhancement of Load-Carrying Capacity of Undermatching Butt Joints by Weld Shape Design." Advanced Materials Research 189-193 (February 2011): 3279–83. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3279.

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Анотація:

A new attempt is proposed to improve the load-carrying capacity of high strength steel undermatching butt welded joints by shape design. Based on the principle that reasonable geometric parameters designs of welded joints can regulate the distribution of stress and strain, reduce the stress concentration factors in low strength weld zone, the geometric parameters of undermatching butt joints, such as weld toe radius, height of excess weld metal and width of the cover passes are designed. A series of tests were completed to investigate the effect of weld shape design on the mechanical properties and security of undermatching butt joints. The results showed that the critical crack sizes of the 0.6~1.0 undermatching joints is greater than or equal to the one of base metal, the joints strengths approach to the tensile strength of base mental, and the fatigue strength is far higher than that of the as-welded equalmatching butt joints.

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30

Lee, Swoo-Heon, Kyung-Jae Shin, So-Yeong Kim, and Hee-Du Lee. "Numerical Study on the Deformation Behavior of Longitudinal Plate-to-High-Strength Circular Hollow-Section X-Joints under Axial Load." Applied Sciences 9, no. 19 (September 24, 2019): 3999. http://dx.doi.org/10.3390/app9193999.

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Анотація:

This study aims to investigate the joint strength of longitudinal plate-to-high-strength steel circular hollow-section X-type joints under plate axial load. The material properties of high-strength steel with nominal yield strengths of 460, 650, 900, and 1100 MPa were used for parametric analysis. The variables for analysis were ratios of chord diameter to thickness, plate width to chord diameter, and utilization. To determine the capacity of connections, the joint strengths using a deformation limit and a strength limit were considered and compared with American Institute of Steel Construction (AISC), Eurocode 3, and ISO 14346. The joint strength determined by the ultimate deformation limit is approximately equal to the joint strength determined by the strength limit state at the yield strength of 460 MPa. The difference between both the joint strengths, however, becomes higher with increasing yield strength. The design equations estimate the joint strength based on the ultimate deformation limit approximately until the limitation of the nominal yield strength in each design code. As the nominal yield strength increases, the joint strengths are overestimated. In using high-strength steel in circular hollow-section X-type joints, the reduction factors of 0.75 and 0.62 for AISC and ISO 14346 are suggested for the nominal yield strengths of 900 and 1100 MPa, respectively. In Eurocode 3, the reduction factor of 0.67 is also suggested for a yield strength of 1100 MPa.

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31

BAN, H. Y., G. SHI, Y. J. SHI, and Y. Q. WANG. "COLUMN BUCKLING TESTS OF 420 MPA HIGH STRENGTH STEEL SINGLE EQUAL ANGLES." International Journal of Structural Stability and Dynamics 13, no. 02 (March 2013): 1250069. http://dx.doi.org/10.1142/s0219455412500691.

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Анотація:

This paper presents the results of the experimental studies conducted on the buckling behavior of 420 MPa high strength steel, hot-rolled, equal angle columns, numbering a total of 66 specimens with a wide range of column slenderness and section sizes. Based on the test results, the buckling modes and capacities were analyzed and the nondimensional buckling strengths were obtained and compared with the design strength predicted from Eurocode 3, ANSI/AISC 360-10 and Chinese standards GB50017-2003. The experimental results in previous studies were also employed in the comparison. The effect of width to thickness ratio of legs of an angle on buckling modes and strengths were investigated. It was found that the buckling strengths from test results were much higher than the corresponding design values and current design approaches were too conservative. Based on present and previous experimental results, a new design approach is suggested for the design of angle columns with 420 MPa high strength steel.

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32

Mendis, P., and C. French. "Bond Strength of Reinforcement in High-Strength Concrete." Advances in Structural Engineering 3, no. 3 (July 2000): 245–53. http://dx.doi.org/10.1260/1369433001502175.

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Анотація:

The use of high-strength concrete is becoming popular around the world. The american code, ACI 318–95 is used in many countries to calculate the development length of deformed bars in tension. However, current design provisions of ACI 318–95 are based on empirical relationships developed from tests on normal strength concrete. The results of a series of tests on high-strength concrete, reported in the literature, from six research studies are used to review the existing recommendations in ACI 318–95 for design of splices and anchorage of reinforcement. It is shown that ACI 318–95 equations may be unconservative for some cases beyond 62 MPa (9 ksi).

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33

Ho, J. C. M., and J. Peng. "Strain gradient effects on flexural strength design of normal-strength concrete columns." Engineering Structures 33, no. 1 (January 2011): 18–31. http://dx.doi.org/10.1016/j.engstruct.2010.09.014.

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34

Ho, J. C. M., and J. Peng. "Strain gradient effects on flexural strength design of normal-strength concrete beams." Structural Design of Tall and Special Buildings 22, no. 1 (November 18, 2010): 29–49. http://dx.doi.org/10.1002/tal.655.

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35

Sá, Ayrton Wagner dos Santos Gomes de, Yane Coutinho, Renan Gustavo Pacheco Soares, Fernanda Cavalcanti Ferreira, and Arnaldo Manoel Pereira Carneiro. "Evaluation of compressive strength of concrete with metakaolin using different levelling techniques." Research, Society and Development 10, no. 3 (March 17, 2021): e31510313341. http://dx.doi.org/10.33448/rsd-v10i3.13341.

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Анотація:

The partial replacement of cement by mineral additions such as metakaolin has been widely applied in the production of high-strength and durable concretes due to the pozzolanic action, allowing a reduction in the consumption of cement. Tests are performed to determine the mechanical properties of these materials, such as compressive strength, for which there are different levelling techniques of specimens, such as sulphur and neoprene, indicated for different resistance classes. The present study aimed to characterize the behaviour, in the hardened state, of concrete produced with high initial strength Portland cement (CPV-ARI) and metakaolin and evaluate the different levelling methods. Three groups of samples dosed by the IPT-EPUSP method, with mix designs of 1:3, 1:5, and 1:6, and replacements of 8 and 10% of cement by metakaolin, were subjected to compressive strength test, at the ages of 28 days, with levelling by neoprene, and 90 days, with levelling by sulphur. It was observed an increase in strength with addition of metakaolin at both ages. Comparing the results in the two ages, it was verified an increase in strength for the mix designs 1:5 and 1:6 and a reduction for the mix design 1:3. Such fact can be explained by the high strengths achieved by this mix design. As the levelling method used was sulphur, it is confirmed the imprecision of results for strengths above 50 MPa with this technique.

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36

Lohaus, Ludger, Nadja Oneschkow, and Maik Wefer. "Design model for the fatigue behaviour of normal-strength, high-strength and ultra-high-strength concrete." Structural Concrete 13, no. 3 (September 2012): 182–92. http://dx.doi.org/10.1002/suco.201100054.

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37

Pashan, Amit, and M. U. Hosain. "New design equations for channel shear connectors in composite beams." Canadian Journal of Civil Engineering 36, no. 9 (September 2009): 1435–43. http://dx.doi.org/10.1139/l09-078.

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Анотація:

This paper briefly summarizes the results of an experimental research project involving the testing of push-out specimens with channel shear connectors. The test program consisted of three series, each with 12 push-out specimens. In each series, six specimens had solid concrete slabs and the other six specimens had concrete slabs incorporating wide-ribbed metal deck with ribs parallel to the beam. The test parameters included the compressive strength of concrete and the length and web thickness of the channel shear connector. The test results showed that, for a given length of channel, the concrete strength dictates the failure mode. In specimens with higher strength concrete, failure was caused by the fracture of the channel web. Concrete crushing–splitting was the observed mode of failure in specimens with solid slabs when lower strength concrete was used. A concrete shear plane type of failure was observed in most of the specimens with metal deck slabs. The strengths of concrete used ranged from 21 MPa to a maximum of 35 MPa.

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38

Harabinova, Slavka, Eva Panulinova, Eva Kormaníkova, and Kamila Kotrasova. "IMPORTANCE OF SOIL SHEAR STRENGTH PARAMETERS FOR OPTIMAL DESIGN OF THE BUILDING FOUNDATION." Theory and Building Practice 2019, no. 1 (December 20, 2019): 5–11. http://dx.doi.org/10.23939/jtbp2019.01.005.

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39

Meechang, Clarence Meripa, Jayakumar Muthuramalingam, and Nicholas Tam. "Durability Performance of Geopolymer Concrete of Various Strength." Civil and Sustainable Urban Engineering 3, no. 1 (February 7, 2023): 16–24. http://dx.doi.org/10.53623/csue.v3i1.171.

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Geopolymers, primarily composed of fly ash, have proved an excellent substitute for ordinary portland cement (OPC) in terms of sustainability and productivity. In order to determine the geopolymer concrete's (GPC) resistance to chemical assaults and water permeability, it is necessary to obtain geopolymer concrete (GPC) of varying strengths after normal curing. The objectives of the research was to test the durability performances of the GPC of various strength under normal curing and investigating the optimum strength based on durability testing of the GPC. For this research, different type of cement-to-fly ash ratio was used for various strength data. The appropriate mixture was conducted by using the trial mix method in order to obtain better accuracy of the results data during the mixing design process. To satisfy the varied strength designs, a small proportion of OPC is added to the GPC mixture as part of the mix design. After 28 days of curing, this durability testing is undertaken after the concrete has reached its maximum strength. The compressive strength test and weights were performed and compared to the GPC mix design at 60 °C after heat curing. The 8% OPC replacement has greater resistance to sulfate attack, saltwater exposure, and water permeability compared to the 6% and 7% OPC alternatives. Consequently, the experiment reveals that the GPC's durability and strength increase as the percentage of OPC increases.

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Perelmuter, Anatoly. "STRENGTH ANALYSIS IN DESIGN CODES AND SOFTWARE." International Journal for Computational Civil and Structural Engineering 16, no. 4 (December 28, 2020): 69–79. http://dx.doi.org/10.22337/2587-9618-2020-16-4-69-79.

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Modern building design standards have a long history. During this time, they have undergone a number of changes, but some of their provisions and recommendations, once proclaimed, remain unchanged. And although they do not meet the modern possibilities of computational analysis, but continue to exist due to the established tradition. In this paper, attention is paid to only some of the mentioned conflicts, which are related to the software implementation of regulatory requirements.

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Lee, Jin Ah, Hyoung Taek Hong, and Heung Jae Chun. "Strength Design of Lightweight Composite Bicycle Frame." Transactions of the Korean Society of Mechanical Engineers A 37, no. 2 (February 4, 2013): 265–70. http://dx.doi.org/10.3795/ksme-a.2013.37.2.265.

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42

Wang, Z. J., L. H. Kang, A. S. Kretov, and S. Huang. "Strength design model for thin-walled structures." Russian Aeronautics (Iz VUZ) 59, no. 1 (January 2016): 126–33. http://dx.doi.org/10.3103/s1068799816010207.

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43

Miyake, J., G. Ghosh, and M. E. Fine. "Design of High-Strength, High-Conductivity Alloys." MRS Bulletin 21, no. 6 (June 1996): 13–18. http://dx.doi.org/10.1557/s0883769400046005.

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Computer-aided design of alloys is becoming increasingly useful, replacing the completely experimental approach. The computer-aided approach significantly reduces the cost of alloy design and more easily leads to optimum properties by reducing the amount of experimentation. Design of high-strength, high-conductivity alloys is a good example of the efficacy of using the computer to design experimental alloys.Alloys that have both high strength and high electrical conductivity are needed for many applications such as lead frames, connectors, conducting springs, and sliding contacts. Figure 1 shows the strength and conductivity of some commercially available copper-based alloys. Since dissolved solutes in an otherwise pure metal rapidly reduce the electrical conductivity (as well as the thermal conductivity), solid solution strengthening is not suitable for designing this class of alloys. Such alloys must be designed on the basis of precipitation or dispersion hardening. The theory of the yield stress of alloys with precipitates or dispersed phases has been well-formulated and may be used for alloy design. The solubility of the hardening phase in the matrix must be very small. Otherwise the conductivity will be degraded too much. Nordheim's rule relates conductivity to dissolved solute in alloys and is also available for alloy design. Decreasing the dissolved solute increases the conductivity and strength due to an increase in the volume fraction of the precipitate.

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Gao, Lianxin. "Strength design of premium threaded casing connection." Chinese Journal of Mechanical Engineering (English Edition) 17, no. 01 (2004): 110. http://dx.doi.org/10.3901/cjme.2004.01.110.

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Ma, Jian Dong, Yu Xiang Li, and Shu Zhong Lin. "Equal Strength Continuous Sucker Rod's Optimization Design." Applied Mechanics and Materials 419 (October 2013): 240–43. http://dx.doi.org/10.4028/www.scientific.net/amm.419.240.

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In this paper, through the plunger Department of the sucker rod to conduct stress analysis, get the force of the plunger department; then create a mathematical model in the general position, because resistance along the way, dead weight, friction forces and so on, the sucker rod from the bottom up force will show increasing trend, according to equal strength concept, analysis each section forces to calculate the iteration equation; using MATLAB simulation software, the calculated result as control variables to achieve the sucker rod's optimal design.

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Zhang, Xin Hua, Sai Tian, Huai Ru Dai, Wei Lin, Zhi Chun Yao, Yun Bo Wang, Qiao Yu Kong, and Jia Wen Zhu. "Study Strength of Recycled Concrete Mix Design." Applied Mechanics and Materials 423-426 (September 2013): 1072–75. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1072.

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This paper discusses waste production of recycled aggregate concrete is used as the recycled concrete, experiment with different recycled aggregate instead of natural aggregate, the ratio of recycled concrete workability and compressive strength etc performance compared with ordinary concrete, analyzing the change of the recycled aggregate replacement rate on the influence of concrete strength.

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Caballero, Francisca García, and Harshad K. D. H. Bhadeshia. "Design of Novel High-Strength Bainitic Steels." Materials Science Forum 426-432 (August 2003): 1337–42. http://dx.doi.org/10.4028/www.scientific.net/msf.426-432.1337.

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Zhou, Cun Long, Hui Liu, and Qing Xue Huang. "Design Considerations in High Strength Plate Leveler." Advanced Materials Research 145 (October 2010): 458–61. http://dx.doi.org/10.4028/www.scientific.net/amr.145.458.

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The higher the output of high-strength plate is, the higher the demand flatness of users will be, but there are some questions in designing high-strength plate leveler now: the first is no enough conditions in traditional parameters calculation formula, the second is neglection of elastic recovery in elastic-plastic bend deformation in plate leveling process. This research, which aims to level plate with yield strength 1200MPa, will amend traditional analytic formula and calculate leveler roller pitch and roller diameter, and can help design the high strength plate leveler.

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Liu, Zhi. "Mechanical Chuck Design and Slip Strength Analysis." E3S Web of Conferences 299 (2021): 01014. http://dx.doi.org/10.1051/e3sconf/202129901014.

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Chuck is one of the key parts of coal mine tunnel drill, its performance directly affects the performance of the machine. In view of the existing problems of the hydraulic chuck, the structure of the new hydraulic chuck is designed and its working principle is briefly described. The strength of slips is analyzed by finite element method. The calculation results show that the initial design of slips meets the requirements of tunnel drilling rigs.

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Kwon, Soon-man, and Young-Bin Cha. "Strength Design of Cam Rack Pinion System." Journal of the Korean Society of Manufacturing Technology Engineers 30, no. 3 (June 15, 2021): 174–80. http://dx.doi.org/10.7735/ksmte.2021.30.3.174.

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