论文部分内容阅读
提出非协调元求解结构响应敏度的一般算法。介绍了非协调函数的一般生成方法和满足分片检验条件的一非协调元 ,建立了使用非协调元进行响应敏度计算的一般公式。最后 ,文中算例使用非协调元和协调等参元计算了结构响应的敏度值 ,并对二者的计算结果进行比较。数值验证表明 ,使用非协调元求得的敏度值比使用等参元的结果更好 ,非协调元更适合敏度分析。
The general algorithm for solving the structural response sensitivity of non-coordinated elements is proposed. This paper introduces the general method of generating noncoordinated functions and a nonconforming element that satisfies the condition of patch checking. The general formula for calculating the response sensitivity using nonconforming elements is established. Finally, the example uses the non-coordination element and the coordination isoparametric element to calculate the sensitivity value of the structure response, and compares the calculation results of the two. The numerical results show that the sensitivity obtained from the non-coordination element is better than the one using the isoparametric element, and the non-coordination element is more suitable for the sensitivity analysis.