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中文摘要：
含热障涂层的发动机零部件能有效提高抗热性能,但微接触作用下的部件涂层表面的应力分布规律及失效形式直接影响发动机可靠性。以热障涂层与榫头接触作用为背景,将其抽象为含规则粗糙峰的刚性表面与热障涂层微接触模式,利用弹塑性接触有限元方法分析涂层表面下的压力及应力分布,研究压入深度、涂层厚度、弹性模量和屈服强度对于涂层压力及残余应力分布的影响。
英文摘要：
A engine part with TBC can in effect improve anti-hot capability,but the distribution of stress of coating in contact with multi-asperity and collapse have not been mastered.According to TBC contacted by the rabbet of the aircraft engine blade,a rigid multi-asperity surface was abstracted as micro-contact pattern and the contact pressure and stress in the subsurface was analyzed with the elastic-plastic finite element method.The effect of coating thickness,elastic moduli,yield strength on the distribution of residual stress for the TBC was investigated.
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