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关系. 关键词:岩石动力学；变幅分级循环加载；滞回曲线；应力应变滞后关系；径向阻尼比；轴向阻尼比 中图分类号:TU45 文献标志码:A 文章编号:1672-7207(2019)12-3046-09 Experimental study on damping characteristics of mudstone... and axial stress-strain hysteresis as well as radial damping ratio and axial damping ratio of rock under different cyclic stress loads, the variable-strain cyclic load test of saturated mudstone......
) Abstract: The damping properties of CuAIM n shape memory alloys both in martensite and parent phase were investigat ed using cantilever resonant-bar technique. It is found that Ctr 10. 5% AF6% Mn and Ctr 11% AF8% Mn( mass fraction) shape memory alloys exhibit high damping capacity both in martensite and parent phase, with internal friction ( Q-1) approximately......
中图分类号:TG 146 文献标识码:A Influence of process technology on mechanical and damping properties of ZK60 magnesium alloys WANG Jing-feng1, 2, GAO Shan1, 2, PAN Fu-sheng1, TANG... University, Chongqing 400044, China) Abstract: The microstructure, mechanical properties and damping properties of ZK60 magnesium alloy in the first extrusion, second extrusion and forging states were......
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晶界和相界面滑动,位错振荡以及各相的热膨胀系数和弹性模量间差造成的微塑性变形共同造成的.认为ZA27-4%Si合金具有良好耐磨性能和减振性能和强度,适合作为滑动轴承合金材料. 关键词:ZA27-4％Si合金; 阻尼性能; 阻尼机理, 弹性模量; ZA27-4％Si; damping capacity; damping mechanism; modulus of elasticity; [全文......
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Effect analysis of friction and damping on anti-backlash gear based on dynamics model with time-varying mesh stiffnessYANG Zheng(杨政), SHANG Jian-zhong(尚建忠), LUO Zi-rong(罗自荣) (School of Mechatronics... gear pairs at any timing were determined according to the meshing characteristic of anti-backlash gear. The influences of friction and variations of damping ratio on dynamic transmission error were......
, Chongqing 400044, China; 3. Institute of System Engineering, China Academy of Engineering Physics, Mianyang 621900, China Received 13 February 2012; accepted 15 June 2013 Abstract: The damping capacities... disappear while peak P3 appears after deformation of the CM31 alloy, and confirm that the three internal friction peaks are the dislocation damping peak, grain boundary damping peak......
移,高温区域的晶界滑移以及合金中的晶格畸变这3种阻尼机制叠加而成. 关键词:Mg-Li合金；弹性模量；力学性能；阻尼性能 中图分类号:TG146.2 文献标志码:A Mechanical properties and damping...), scanning electron microscope (SEM), tensile properties test, amplitude-damping test and temperature-damping test were used to analyze the mechanical properties and the damping capacity of Mg-Li......
to the fretting instability mechanism of gear shaft shoulder by introducing the friction instability damping ratio. The numerical results show that the main factors causing the unstable and vibrating gear shaft... effectively mitigate the fretting instability phenomenon of gear shaft shoulder. The experimental results verify that damping plays a significant role in eliminating the vibration of gear shaft control......
