Elastic-Plastic Analysis of Stresses and Initiation of Cracks in a Ceramic Coating Under Indentation by an Elastic Sphere
作者： K. Hayashi , F. Yuan
DOI: 10.1115/1.2834571
关键词: Composite material 、 Radial stress 、 Stress (mechanics) 、 Structural engineering 、 Contact mechanics 、 Coating 、 Fracture mechanics 、 Work hardening 、 Strain hardening exponent 、 Cylinder stress 、 Materials science
摘要: The elastic-plastic contact problem ofa ceramic coating on a half-space indented by an elastic sphere is solved the use of finite element method under variety conditions. An material behavior with isotropic strain hardening was employed. Results for stresses, during loading and after unloading. surface along axis symmetry are presented formation cracks discussed in detail, emphasizing influence thickness coating. It shown that circumferential stress highly tensile so radial induced sharp indenter. But, blunt indenter, always larger than stress, leading to cracks. also that, case can be
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