摘要
论述了用对偶边界法识别材料参数的原理和计算步骤。与直接法和逆解法相比，对偶边界法具有较高的分析精度。在待识别参数少的情况下，３种方法给出了同样的结果。但在待识别参数较多的情况下，直接法和逆解法精度较差，在某些情况下甚至不收敛。作为实际应用的例子，文章对轨道基础的材料参数进行了识别。
This paper summarizes the principles and computational steps of identifying material parameters with dual boundary control method.Compared to direct and inverse formulations,the dual boundary control method gives results of higher accuracy.In the case of identifying a small number of parameters,the three methods give identical results.Whereas in the case of identifying a considerable number of parameters,the direct and inverse formulations are inferior in performance as to accuracy and do not converge under certain condifions.As an example of application,material constants for track foundation are analyzed
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
1997年第3期47-54,共8页
China Railway Science
关键词
材料参数反分析
直接法
逆解法
轨道基础
Back analyzing material parameter,Direct formulation,Inverse formulation,Dual boundary control formulation,Track foundation
