通过胶条拉伸试验和厚粘附体胶接接头剪切试验,得到车用结构胶拉伸与剪切的应力-应变曲线和基本力学性能参数.根据塑性增量理论和采用的Hill屈服准则,建立了车用结构胶的弹塑性本构方程,得到ANSYS仿真的验证.研究的结果表明,采用ANSYS提供的BISO+ Hill材料模型能准确地模拟车用结构胶的力学性能.%Based on adhesive strip tensile test and thick adherends shear test, the stress-strain curves for tensile and shear and the basic mechanical property parameters of vehicle structural adhesives are obtained. By fur ther applying the incremental theory of plasticity and adopting Hill yield criterion, the elastic-plastic constitutive e quations of vehicle structural adhesives are established and then validated by simulation with ANSYS. The results of the research show that using BISO + Hill material model in ANSYS can accurately simulate the mechanical properties of vehicle structural adhesives.
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