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a notable increase in shear strength of the specimens. The reason lies in the formation of diffusional joint between the interface of both Al/Cu and Cu/Ni layers at high temperature. The shear bonding...; diffusional joint 1 Introduction Severe plastic deformation (SPD) process has proven its ability as a suitable method for producing ultra-fine grained (UFG) structures in metals and alloys. The main......
J. Cent. South Univ. (2019) 26: 3103-3113 DOI: https://doi.org/10.1007/s11771-019-4239-8 Fourier-shape-based reconstruction of rock joint profile with realistic unevenness and waviness features NIE...: Rock joint shape characteristics, waviness and unevenness play essential but distinct roles in shear mechanism of rock joints. This study presents a novel method to generate virtual rock joint......
Towards Long-Life Replacement Joint Prostheses - A Surface Engineering Approach Hanshan Dong1 (1.Department of Metallurgy and Materials, The University of Birmingham, Birmingham B15 2TT, UK) 摘要:How to improve the wear resistance of bearing surfaces, hereby achieving long life of orthopaedic joint prostheses has long been a technical challenge with much fundamental interest and social......
Propagation simulation and dilatancy analysis of rock joint using displacement discontinuity methodLI Ke(李科)1, 2, HUANG Lun-hai(黄伦海)1, HUANG Xing-chun(黄醒春)2, 3(1. National Engineering Laboratory... (DDM) program is developed for the simulation of rock joint propagation and dilatancy analysis. The non-linear joint model used in the program adopts Barton-Bandis normal deformation model, Kulhaway......
J. Cent. South Univ. Technol. (2007)03-0408-05 DOI: 10.1007/s11771-007-0080-6 Closure behavior of rock joint... material testing machine. The specimens were made artificially with mortar. The loading frequency ranged from 0.005 Hz to 0.1 Hz. The experimental results show that joint closure curves are non-linear......
有效实现电阻率与极化率数据的联合反演,具有很强的抗噪声能力,且算法收敛快,稳定性好.进一步的实测数据联合反演测试还表明:该算法具有较低的模型初始信息依赖性,在给定较大搜索空间的条件下仍能反演出较为满意的结果模型,具有较好的实用性.关键词:联合反演;双频激电;粒子群优化算法;视电阻率;极化率Joint inversion of dual frequency IP data using PSOCUI... quantitatively and more accurately, a joint inversion was proposed based on particle swarm optimization (PSO). Through simulating anomalies by ellipsoids, the forward of dual frequency IP can be given based......
An adaptive waveform-detection threshold joint optimization method for target trackingWANG Hong-qiang(王宏强)1, XIA Hong-en(夏洪恩)2, CHENG Yong-qiang(程永强)1, WANG Lu-lu(王璐璐)1(1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;2. 66242 PLA Troops, Suniteyou Banner 011216, China)Abstract:The joint optimization of detection threshold......
Elastodynamic modeling and joint reaction prediction for 3-PRS PKMZHANG Jun(张俊)1, 2, ZHAO Yan-qin(赵艳芹)1(1.School of Mechanical Engineering, Anhui University of Technology, Ma’anshan 243032, China;2... machines (PKMs), a methodology of elastodynamic modeling and joint reaction prediction is proposed. For this purpose, a Sprint Z3 model is used as a case study to illustrate the process of joint reaction......
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Numerical evaluation of buckling behavior in space structure considering geometrical parameters with joint rigiditySu-Deok Shon1, Kyung-Ju Hwang2, Seung-Jae Lee1(1. School of Architectural... behavior of single layer space structure is very sensitive. The joint rigidity, moreover, is one of the main factors of stability which may determine the entire failure behavior. Thus, the reasonable......