Elastic and viscoelastic contact mechanics of coating/substrate composites in axisymmetric indentation
Elastic and viscoelastic contact mechanics of coating/substrate composites in axisymmetric indentation
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DOI：
10.1080/14786430600891345
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发表时间：
2006-11
影响因子：
1.6
通讯作者：
M. Sakai
中科院分区：
文献类型：
--
作者：
M. Sakai
涂层/基体复合材料的压痕接触力学在弹性和粘弹性制度解决。弹性Boussinesq问题的分析解决方案首先检查使用适当的接触压力分布。然后利用线弹性变形和线粘弹性变形的对应原理，将层状复合材料弹性模量Eeff的解析表达式转换为相应的应力松弛模量Yeff（t）。对层状复合材料的应力松弛行为进行了数值模拟，弹性基材上的粘弹性涂层、粘弹性基材上的弹性涂层等，的演示，以获得流变学的见解涂层/基体复合材料的接触行为的平头圆柱压痕。包括在理论考虑的假设和近似仔细处理。粘性挤压流动，在一个薄的涂层膜，出的几何约束的压头下的空间也检查。
Indentation contact mechanics of coating/substrate composites is addressed in elastic and viscoelastic regimes. An analytical solution for the elastic Boussinesq problems is examined first using an appropriate contact pressure distribution. The analytical expression for the elastic modulus E eff of layered composites is then converted to the corresponding stress relaxation modulus Y eff (t) using the correspondence principle of linear elastic and linear viscoelastic deformations. Several numerical simulations for the stress relaxation behaviour of layered composites, i.e., a viscoelastic coating on an elastic substrate, an elastic coating on a viscoelastic substrate, etc., are demonstrated to obtain rheological insights into the contact behaviour of coating/substrate composites for flat-ended cylindrical indentation. The assumptions and approximations included in the theoretical considerations are carefully addressed. The viscous squeezing flow, in a thin coating film, out of the geometrically constrained space beneath the indenter is also examined.