【摘要】 提出适合描述隔振橡胶在宽频振动时力学行为的本构模型。本构模型包含超弹性和粘弹性两个部分,超弹性部分表征橡胶材料的静态特性;非线性粘弹性部分描述橡胶材料在振动、冲击载荷下的动态响应。基于该本构模型,对橡胶材料在宽应变率范围内进行试验,九个材料参数通过高、低应变率下的试验数据拟合确定,模型预测结果与试验结果是相当吻合的。更多还原

【Abstract】 A constitutive model is proposed to describe the mechanical behaviour of vibration isolation rubber under vibrations with wide frequency range.The constitutive model comprises two parts: the hyperelastic component to indicate static characteristics of rubber materials and the nonlinear viscoelastic component to describe dynamic responses under vibration and impact loadings.According to the proposed constitutive model,a series of experiments are performed on rubber materials over a wide strain rate range.The experimental data obtained at high and low strain rates are used to determine nine material parameters via a least-square fitting.The results predicted by this model have a good agreement with the experimental data.更多还原