Composite has been widely used in various fields due to its advanced performance. To reveal the relation between the mechanical properties of the composite and that of each individual component, finite element analysis (FEA) has usually been adopted. In this study, in order to predict the mechanical properties of hard coating on a soft polymer, the response of this coating system during nanoindentation was modelled. Various models, such as a viscoelastic model and fitting model, were adopted to analyse the indentation response of this coating system. By varying the substrate properties (i.e., Young’s modulus, viscoelasticity, and Poisson’s ratio), Young’s modulus, energy loss, and the viscoelastic model of the coating system were analysed, and how the mechanical properties of the substrate will affect the indentation response of the coating system was discussed.

中文翻译：

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用球形压头对软聚合物基材上硬涂层的纳米力学进行有限元分析

复合材料以其先进的性能被广泛应用于各个领域。为了揭示复合材料的机械性能与每个单独组件的机械性能之间的关系，通常采用有限元分析 (FEA)。在这项研究中，为了预测软聚合物上硬涂层的机械性能，对该涂层系统在纳米压痕过程中的响应进行了建模。采用粘弹性模型和拟合模型等各种模型来分析该涂层系统的压痕响应。通过改变基材特性（即杨氏模量、粘弹性和泊松比），分析了涂层系统的杨氏模量、能量损失和粘弹性模型，