Results 21 to 30 of about 388 (137)

Study on Fatigue Mechanism of Main Bearings of Shield Machine based on FRANC3D

Jixie chuandong, 2022
Taking the main bearing of the shield machine as the research object， and a finite element analysis on the contact fatigue mechanism of the main thrust raceway is carried out. Considering the size of the main bearing of the shield machine is too large， a
Wei Chen, Jianxin Su
doaj   +1 more source

Numerical and experimental investigation of mixed‐mode crack growth in aluminum alloys

Fatigue &Fracture of Engineering Materials &Structures, Volume 45, Issue 10, Page 2854-2872, October 2022., 2022
Abstract Fatigue crack growth in Al 2024 and Al 7050 specimens was assessed experimentally and numerically. In the experimental investigation, various specimen configurations and loading conditions were used to achieve pure mode I, pure mode II, and mixed mode I/II, I/III, and I/II/III.
Daniele Amato, Rustam Yarullin, Valery Shlyannikov, Roberto Citarella   +3 more
wiley   +1 more source

Three‐Dimensional Stress Intensity Factor Correction Method Based on Thickness Size Effect

Advances in Materials Science and Engineering, Volume 2021, Issue 1, 2021., 2021
This paper presents the fatigue crack growth test of 7N01 aluminum alloy specimens with different thicknesses under three‐point bending. Moreover, the effect of specimen thickness on the fatigue crack growth life was analyzed. The influence mechanism of the thickness size effect on the stress intensity factor was explored.
Xiaochen Zhang, Hanwen Li, Weiying Meng, Tian Zhang, Zhenpeng Liu, Xiao Lv, Georgios I. Giannopoulos   +6 more
wiley   +1 more source

An Experimental and Numerical Investigation on the Initiation and Interaction of Double Cracks in Rocks under Hydromechanical Coupling

Advances in Materials Science and Engineering, Volume 2020, Issue 1, 2020., 2020
The growth of double cracks is the main factor leading to progressive rock failure under hydromechanical coupling. The initiation modes and interaction behaviors of double cracks were investigated by using laboratory tests, and the influences of water pressure were analyzed.
Jie Mei, Wanzhi Zhang, Hiroshi Yoshihara
wiley   +1 more source

Numerical Simulation of Fracture Behavior of Brittle Solids under I/III Loading

Advances in Civil Engineering, Volume 2020, Issue 1, 2020., 2020
This study used numerical analysis to carry out a large number of numerical model calculations based on a new semicircular bend (SCB) model. Instead of existing numerical computation methods (J‐integral), the M‐integral method was used to calculate the mixed mode fracture parameters (KI, KII, and KIII), investigate the influence of the geometry and ...
Zhitao Zhang, Haijun Wang, Shuyang Yu, Fabio Di Trapani   +3 more
wiley   +1 more source

Fatigue Life Prediction of the Zirconia Fixture Based on Boundary Element Method

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
Zirconia grinding fixtures have been widely used in semiconductor industry to improve the quality and precision of the products. For maximizing the service life and minimizing the risks of accidental damage, it is critical to have a better understanding of the fatigue life of zirconia grinding fixtures.
Y. W. Wang, J. J. Ye, W. P. He, G. G. Cai, B. Q. Shi, Jiawei Xiang   +5 more
wiley   +1 more source

Study on main failure modes of multiple-holes structures based on branch-bound method

Xibei Gongye Daxue Xuebao, 2022
Aiming at the typical five-hole structure on the aircraft skin, combined with the failure criterion of multi crack structure and considering the random factors affecting the residual life distribution of multiple crack structure, this paper applies the ...
XIE Wei, ZHANG Yadan, MA Zehua, FENG Jinrong, WU Yu   +4 more
doaj   +1 more source

The Sandia Fracture Challenge: blind round robin predictions of ductile tearing [PDF]

, 2016
Existing and emerging methods in computational mechanics are rarely validated against problems with an unknown outcome. For this reason, Sandia National Laboratories, in partnership with US National Science Foundation and Naval Surface Warfare Center ...
Bhamare, S., Boyce, B. L, Brinckmann, S., Carter, B. J, Cerrone, A. R, Chen, J. S, Chen, Z., Chi, S.-W., Cordova, T. E, Cruce, J., DeFrese, R., Dion, K., Elkhodary, K. I, Emery, J. M, Fang, E., Fang, H. E, Gan, Y., Ghahremaninezhad, A., Gross, A. J, Hochhalter, J. D, Ingraffea, A. R, Kaczmarowski, A. K, Karasz, E., Kilic, B., Kramer, S. L B, Lin, S.-P., Liu, P., Lua, J., Luo, Meng, Madenci, E., Miraglia, M., Moyer, E. T, Nahshon, K., Neilsen, M. K, O’Connor, D. T, Pack, Keun Hwan, Qian, D., Quinkert, L., Ravi-Chandar, K., Rüter, M., Tang, S., Veilleux, M. G, Wawrzynek, P. A, Wierzbicki, Tomasz, Xue, L., Yang, P., Yreux, E., Zhang, T., Zhang, X., Zhao, J., Zhou, Z.   +50 more
core   +1 more source

Crack extension analysis and fatigue life assessment of single lug and yoke joints containing initial defects

Materials Research Express, 2022
To investigate the impact of initial cracks on the fatigue performance of single lug and yoke joints, fatigue testing was performed for defective welding joint models.
Shuai Ma, Jinhui Duan, Jiansheng Cheng, Fei Li, Ru Wang, Lijun Zhou   +5 more
doaj   +1 more source

Numerical Simulation on Crack–Inclusion Interaction for Rib-to-Deck Welded Joints in Orthotropic Steel Deck

Metals, 2023
Weld defects such as porosity, inclusion, burn-through, and lack of penetration are difficult to detect and control effectively in an orthotropic steel deck (OSD), which will be a fatigue crack initiation site and lead to several fatigue cracking.
Yuan Luo, Xiaofan Liu, Fanghuai Chen, Haiping Zhang, Xinhui Xiao   +4 more
doaj   +1 more source