灵敏度方法在连杆机构动态响应重分析中的应用

Application of Sensitivity Analysis in Dynamic Response of Elastic Linkages

简介了求解机构灵敏度的直接求导法.介绍了几种应用于结构动力重分析的方法:矩阵摄动法、灵敏度方法、双模态方法和局部修改方法.通过比较,将灵敏度方法应用在机构弹性动力综合的多次动力重分析过程中.通过算例表明,该方法计算机构弹性动力综合中的动力响应重分析时,计算效率高且精度好。

The direct differentiation method for linkages'sensitivity was firstly introduced and its corre- sponding equations were deduced.Then several methods were introduced in the application of analyzing dynamic response:the matrix perturbation,the sensitivity method,the dualmodal method,partial modifi- cation method.After comparing,the sensitivity analysis based on the direct differentiation method was used in the solution of dynamic response during kinetic elastic dynamics( KED) synthesis of elastic link- ages.An example of KED synthesis of a four- bar elastic linkage was presented to show the validity of the proposed method.