Effect of the Material Parameters on Layered Viscoelastic Frictional Contact Systems
Effect of the Material Parameters on Layered Viscoelastic Frictional Contact Systems
复制标题
材料参数对层状粘弹性摩擦接触系统的影响
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Alaa A. Abdel Rahman
中科院分区：
文献类型：
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作者：
F. F. Mahmoud;A. El;A. Alshorbagy;Alaa A. Abdel Rahman
在设计过程中，主要目标之一是降低接触应力的峰值。这可以通过用不同材料特性的层对接触体进行分层来实现。粘弹性材料的特征在于应力松弛或蠕变变形;因此，接触体可以用这种材料分层以实现该目标。本文讨论了粘弹性层的材料特性对无限接触构形的影响。三个材料参数被认为是：层/接触固体刚度比，延迟/瞬时弹性比，和材料松弛时间。结果是通过使用二维时间相关的非线性计算模型，作者开发的，能够分析准静态粘弹性摩擦接触问题。
In the design process, one of the main targets is to reduce the peak values of the contact stresses. This can be attained by layering the contacting bodies by layers of different material characteristics. Viscoelastic materials are characterized by either a stress relaxation or a creep deformation; therefore, the contacting bodies can be layered with such materials to attain this target. This paper discusses effects of the material characteristics of viscoelastic layers upon the unbounded contact configuration. Three material parameters are considered: the layer/contact solids stiffness ratio, the delayed/instantaneous elasticity ratio, and the material relaxation time. The results are obtained by using a two-dimensional time-dependent nonlinear computational model, developed by the authors, capable of analyzing quasistatic viscoelastic frictional contact problems.