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Littérature scientifique sur le sujet « Fatigue mecanique en traction »

Auteur : Grafiati

Publié le 8 juillet 2023

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Articles de revues sur le sujet "Fatigue mecanique en traction"

1

Isalgué, Antonio, Javier Fernández, Nuria Cinca, et al. "Thermomechanical Fatigue Behavior of NiTi Wires." Materials Science Forum 738-739 (January 2013): 311–15. http://dx.doi.org/10.4028/www.scientific.net/msf.738-739.311.

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Applications of the functional, smart materials SMA need a careful evaluation of the working conditions and fatigue life. Structural fatigue failure in NiTi usually comes from a surface defect inducing crack growth, and this means that fatigue has to be studied for concrete applications, with the correct samples, as the state of the material presents size effects. Testing machine experiments on Ni-rich pseudoelastic wires indicate that the main parameter controlling the fatigue life in the traction-traction experiments is the effective stress on the NiTi wire. Long wire life (in the million cy

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2

Xiang, Hui Yu, Zhi Qiang Li, Chong Jie Leng, and De Mao Hu. "Fatigue Analysis of the Rotor Shaft on a High Speed Traction Motor." Advanced Materials Research 482-484 (February 2012): 722–25. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.722.

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Rotor shaft is an important part in the high speed traction motor. In the process of the motor running，some rotor shaft may show the symptoms of fatigue crack，fracture and other issues．Therefore，it is essential to analyze its fatigue condition for these potential problems in the product design stage．In this paper，finite element analysis software NX. Nastran is used to analyzing the rotor shaft of traction motor from structural strength，fatigue strength and fatigue life respectively．The fatigue damage area and dangerous zone of the rotor shaft as well as its fatigue life can be predicted accord

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3

Lin, Zhi Jia, and Ming Ye Zhang. "Fatigue Analysis for Traction Transformers during Random Vibration." Advanced Materials Research 1079-1080 (December 2014): 364–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.364.

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Traction transformers areheavy and suffering dynamic load all the time when the train is starting,stopping and moving. These load cases make it necessary to design tractiontransformers in fatigue resistance view. In this paper, random vibrationsimulation is done for traction transformer with finite element method. ThisFEM result is used for fatigue analysis. Several methods of damage accumulationfor random vibration are discussed and compared with test result. Result showssingle moment method is a better choice for traction transformers.

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Yang, Haibo, Hongliang Qian, Ping Wang, and Pingsha Dong. "Analysis of fatigue behavior of welded joints in orthotropic bridge deck using traction structural stress." Advances in Mechanical Engineering 11, no. 11 (2019): 168781401989021. http://dx.doi.org/10.1177/1687814019890217.

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In this study, the fatigue behavior of welded joints in an orthotropic steel bridge is simulated and analyzed. The traction structural stress method is proven to be more accurate and effective, and the predicted results agree well with the test results compared to traditional assessment methods, including the nominal stress, hot-spot stress, and effective notch stress methods. The traction structural stress concentration factor curves of welded joints under cyclic tensile and bending moment loading are obtained. The accuracy and validity of finite-element simulation methods for welded joints i

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5

Seo, Jung Won, Hyun Mu Hur, Sung Tae Kwon, Jae Boong Choi, and Young Jin Kim. "Effects of Residual Stress and Traction Force on the Contact Fatigue Life of Railway Wheels." Key Engineering Materials 326-328 (December 2006): 1067–70. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1067.

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Damage often occurs on the surface of railway wheels due to wheel-rail contact fatigue. Since the wheel failure can cause derailment causing the loss of life and property, it should be removed prior to the wheel failure. The effect of surface removal on contact fatigue life has been investigated by many researchers, however, the effects of residual stress and traction force have not been reported yet. The railway wheel reserves the initial residual stress due to the manufacturing process, and this residual stress is changed by the thermal stress induced by braking. Also, the traction force is

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6

Lee, Dong Hyong, Jung Won Seo, and Seok Jin Kwon. "Numerical Analysis of the Effect of Slip Ratio on the Fatigue Crack Initiation Life in Rolling Contact." Advanced Materials Research 891-892 (March 2014): 1791–96. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.1791.

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This paper presents a numerical analysis of the effect of slip ratio on the fatigue crack initiation life, considering the tangential traction on the rolling contact surface. The distribution of tangential traction and contact stresses on the contact surface, when rolling contact occurs between two cylindrical test specimens, are obtained using three-dimensional finite element analysis. The effect of slip ratio on the fatigue crack initiation life was evaluated by applying multiaxial fatigue criteria based on critical plane approaches. As a result, the 3D-FE model developed well represent the

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7

Nikas, George K. "Fatigue Life and Traction Modeling of Continuously Variable Transmissions." Journal of Tribology 124, no. 4 (2002): 689–98. http://dx.doi.org/10.1115/1.1491976.

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A model was developed to study the elastohydrodynamics and contact mechanics of toroidal Continuously Variable Transmission (CVT) type contacts. The aim is to predict the fatigue life, traction and efficiency of such contacts with the intention of making optimizations based on design criteria and constraints. A generalized Reynolds equation was developed for isothermal, transient lubrication of elliptical rough contacts with mixed rolling, two-dimensional sliding, and spinning conditions, incorporating any non-Newtonian model, roughness asperity isothermal elastoplastic interactions, and a thr

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8

Yang, Haibo, Ping Wang, and Hongliang Qian. "Analysis of Fatigue Performance of U-Rib to Deck Connections in Orthotropic Steel Bridge Structures." MATEC Web of Conferences 319 (2020): 07001. http://dx.doi.org/10.1051/matecconf/202031907001.

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The stress condition of the transverse rib, bridge deck, and crossbeam in orthotropic steel bridge decks (OSBD) is complicated. Existing fatigue test specimens and the fatigue performance of components in OSBD differ significantly. In this paper, the numerical analysis method using traction structural stress is validated by the comparison with fatigue test results. The evaluation results of the fatigue behavior using the traction structural stress method are proven to be accurate. The comparative results give the fatigue performance of various types of typical test specimens in terms of the eq

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9

Ouaki, B., S. Goudreau, A. Cardou, and M. Fiset. "Fretting fatigue analysis of aluminium conductor wires near the suspension clamp: Metallurgical and fracture mechanics analysis." Journal of Strain Analysis for Engineering Design 38, no. 2 (2003): 133–47. http://dx.doi.org/10.1243/030932403321163668.

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Fretting fatigue is the main phenomenon inducing reduction of fatigue strength in overhead transmission conductor lines which are subjected to aeolian vibrations. Using the Bersfort ACSR 48/7 conductor, fatigue tests were conducted under several traction forces and relative vibration amplitudes. By metallographic examinations it has been observed that fretting induces microcracks which are mainly located between the keeper edge (KE) and the last point of the contact (LPC) of the conductor at the mouth of the suspension clamp. Under the fatigue tests conditions, several cross-sections of wires

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10

Risitano, Antonino, Carmelo Clienti, and Giacomo Risitano. "Determination of Fatigue Limit by Mono-Axial Tensile Specimens Using Thermal Analysis." Key Engineering Materials 452-453 (November 2010): 361–64. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.361.

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In this work is indicated how it could be possible to evaluate the limit stress of the thermo-elastic phase of deformation by thermo-analysing the surface of the specimen during a static traction test. Adding the temperature curve measured on a small area of the surface (the hottest) to the classic stress-strain curve, it is possible to evaluate a limit temperature T0 coincident with the beginning of the non linear trend of the curve. The corresponding stress value is coincident with the fatigue limit of the analyzed component. As an example, the results of traction tests performed on two notc

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