论文部分内容阅读
采用大变形弹塑性有限单元法，对高速钢基体上的软硬交替多层膜在法向压痕作用下的力学行为，进行了模拟和分析。为了研究膜层数和膜厚的影响，对从单层到１６层的不同膜层体系进行了计算。通过对诸如膜层的变形、最大应力随膜层数的变化、界面剪应力分布、表面张应力分布等的分析，得出了这些参数的分布及其对膜层体系的摩擦学性能的影响。这些结果可为多层膜的结构优化设计提供定量的依据。
The large deformation elasto-plastic finite element method was used to simulate and analyze the mechanical behaviors of the hard and soft alternating multilayer films on the high speed steel substrate under normal indentation. In order to study the influence of the number of layers and the thickness of the film, different layer systems from 16 to 16 layers were calculated. The distribution of these parameters, such as the deformation of the film, the change of the maximum stress with the number of layers, the distribution of interfacial shear stress and the distribution of the surface tensile stress, are obtained. The influence of these parameters on the tribological properties of the film system is obtained. These results can provide a quantitative basis for the structural optimization design of multilayer films.