共搜索到31080条信息,每页显示10条信息,共3108页。用时:0小时0分0秒624毫秒
......
describe many mechanical properties of sand materials. 5 Stress-path hypoplastic model of rockfill From the simulations of large amount of traxial tests on rockfill with the Gudehus-Bauer model... in the updated version of Gudehus-Bauer model, which are φc, hs, n, ed0, ec0 and ei0. The basic parameters describe the intrinsic properties of rockfill materials and are independent of stress path, which keep......
stress in the material is related to its microstructure [19, 20], especially as a kind of typical stick elastic-plastic material, the soil has different mechanical properties, which is liable to cause... J. Cent. South Univ. (2019) 26: 728-742 DOI: https://doi.org/10.1007/s11771-019-4043-5 Dynamic stress accumulation model of granite residual soil under cyclic loading based on small-size creep......
; (11) where c and e are the constants about formation properties and mud physical chemistry properties; Dd is the stress damage factor when drilling fluids contact formation; Df...J. Cent. South Univ. (2016) 23: 3256-3261 DOI: 10.1007/s11771-016-3391-7 Coupled effects of stress damage and drilling fluid on strength of hard brittle shale WANG Wei(汪伟), DENG Jin-gen(邓金根), YU Bao......
to explosive stress wave under consideration of heterogeneity of mechanical properties of material, a simple and direct numerical model was established, and influence of tunnel reinforcing on failure process...J. Cent. South Univ. Technol. (2008) 15: 632-638 DOI: 10.1007/s11771-008-0118-4 Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress......
氮对TP347H耐热奥氏体不锈钢室温拉伸和高温持久性能的影响臧华勋1,罗林1,徐刚1,肖学山1,赵钧良2,朱长春2(1.上海市上海大学材料研究所2.宝山钢铁股份有限公司,上海 200940)摘 要:通过在TP347H奥氏体不锈钢中添加氮,研究了氮含量对其组织和持久性能的影响.结果表明:当氮的质量分数大于0.123%时,能有效抑制高温固溶过程中δ铁素体的析出;氮的添加明显改善了TP347H奥氏体不锈钢的室温拉伸和高温持久性能.含氮TP347H奥氏体不锈钢可作为一种新型高性能耐热材料用于超超临界火电机组.
is proportional to the initial residual stress and related to the material properties and electropulsing parameters.Under the combined actions of drift electrons,Joule heating,and residual stress,the dislocation...Residual Stress Removal Under Pulsed Electric CurrentSiqi Xiang,Xinfang ZhangState Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering,University of Science......
......
-zhang, YUAN Fu-ping, CAO Jie-dong. Study on propagation properties of combined stress waves in viscoplastic thin-walled tubes [J]. Explosion and Shock Waves, 2003, 23(1): 1-5. [11] SUN Yu-xin, ZHANG... Effect of material parameters on stress wave propagation during fast upsetting WANG Zhong-jin(王忠金), CHENG Li-dong(程利冬) School of Materials Science and Engineering, Harbin Institute of Technology......
has an effect on the dimension accuracy and mechanical properties distribution of the formed micro-parts. In the work, the size dependence of flow stress was investigated at room temperature... Effects of specimen size on flow stress of micro rod specimen WANG Chun-ju(王春举)1, GUO Bin(郭 斌)1, SHAN De-bin(单德彬)1, SUN Li-ning(孙立宁)2 1. School of Materials Science and Engineering......