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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......
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Effect of Lanthanum on Driving Force for Cu6Sn5 Growth and Improvement of Solder Joint Reliability 钱乙余1,马鑫2 (1.National Key Laboratory of Welding, Harbin Institute of Technology, Harbin 150001..., the growth of Cu6Sn5 intermetallic compound at the interface of solder joint is hindered, and the thermal fatigue life of solder joint is increased by 2 times. The results of thermodynamic calculation......
J. Cent. South Univ. (2018) 25: 653-661 DOI: https://doi.org/10.1007/s11771-018-3768-x Degradation of joint surface morphology, shear behavior and closure characteristics during cyclic loading FAN...: In order to investigate the failure mechanism of rock joint, a series of laboratory tests including cyclic direct shear tests under constant normal load(CNL) conditions were conducted. Morphology......
J. Cent. South Univ. (2021) 28: 712-727 DOI: https://doi.org/10.1007/s11771-021-4640-y Dynamic modelling and properties analysis of 3RSR parallel mechanism considering spherical joint clearance... in kinematic pair have an effect on the dynamic characteristics of the mechanism. Therefore, we established the dynamic model of a 3RSR (R is the revolute joint and S is the spherical joint) parallel......
Influences of fine pitch solder joint shape parameters on fatigue life under thermal cycle HUANG Chun-yue(黄春跃)1, 2, WU Zhao-hua(吴兆华)2,HUANG Hong-yan(黄红艳)2, ZHOU De-jian(周德俭)2 (1. School of Electro...) Abstract: The solder joint reliability of a 0.5mm lead pitch, 240-pin quad flat package(QFP) was studied by nonlinear finite element analysis(FEA). The stress/strain distributions within......
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J. Cent. South Univ. (2017) 24: 1307-1321 DOI: 10.1007/s11771-017-3536-3 Design and implementation of robot serial integrated rotary joint with safety compliance LI Shuai(李帅)1, LI Jian(李健)2, LI Si... of service or industrial operation, a serial integrated rotary joint with the characteristics of passive and active compliance is proposed. Passive compliance is achieved by a designed elastic element......
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J. Cent. South Univ. Technol. (2010) 17: 807-815 DOI: 10.1007/s11771-010-0560-y Dynamic surface control-backstepping based impedance control for 5-DOF flexible joint robots XIONG Gen-liang(熊根良)1..., and the problem can bring a complexity that will cause the backstepping method hardly to be applied to the practical application, especially to the multi-joint robot. Finally, the validity......