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基于混合法 (以位移和静水压力为基本未知量 ) ,引入 Penn[1 ]建议的不变量分解的 Mooney型 [2 ]本构形式 ,针对混合法建立起总刚元素的特点 ,分析平面应变不可压缩橡胶材料的大变形 ,克服以前在处理不可压缩时 ,计算易失稳等缺点 ,算例表明 :有限元计算稳定并与解析解[4] 吻合。
Based on the hybrid method (displacement and hydrostatic pressure as the basic unknowns), the invariant decomposition of the Mooney type [2] proposed by Penn [1] is introduced to establish the characteristics of the total element in the hybrid method. The analysis of plane strain The large deformation of the compression rubber material overcomes the shortcomings of the previous calculation in the incompressibility of the incompressible material. The examples show that the finite element calculation is stable and consistent with the analytical solution [4].