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Test and simulation the failure characteristics of twin tube shock absorber

机译：双管减震器失效特性的测试与仿真

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Shock absorber is widely utilized in different engineering fields, such as automotive engineering, civil engineering and aerospace engineering, etc. In this paper, the dynamic performance of a twin-tube shock absorber is investigated by experiment and simulation. Force-velocity and Force-displacement curves are tested; results indicate damping force decreases abruptly at the end of compression stroke, when piston speed is between 0.31 and 0.75 m/s. Besides, damping force may also decrease at the end of rebound stroke when velocity continues increase. Furthermore, the virtual prototyping technology is proposed to further investigate dynamic properties of shock absorber. Effects of frequencies and vibration amplitudes on dynamics of shock absorber are comprehensively investigated. Dynamic stiffness and damping coefficients are investigated under multiply conditions. These results show the virtual prototype is an effective approach to characterize the dynamic performance of shock absorber; which can be further optimized under multiple conditions by such simulation. Design charts are also presented, to decide the operation domain of shock absorber. (C) 2018 Elsevier Ltd. All rights reserved.
机译：减震器在汽车工程，土木工程和航空航天工程等不同的工程领域得到了广泛的应用。本文通过实验和仿真研究了双管减震器的动态性能。测试了力-速度和力-位移曲线；结果表明，当活塞速度在0.31至0.75 m / s之间时，阻尼力在压缩冲程结束时突然减小。此外，当速度继续增加时，在回弹冲程结束时阻尼力也可能减小。此外，提出了虚拟样机技术，以进一步研究减震器的动态特性。全面研究了频率和振动幅度对减震器动力学的影响。在多重条件下研究动力刚度和阻尼系数。这些结果表明，虚拟样机是表征减震器动态性能的有效方法。可以通过这种模拟在多种条件下进一步优化。还提供了设计图表，以确定减震器的工作范围。 （C）2018 Elsevier Ltd.保留所有权利。

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