利用静力试验数据修正具有广义中心对称有限元模型
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谢冬秀[1] 黄宁军[1] 张忠志[2]
[1]北京机械工业学院数学系,北京100085 [2]东莞理工学院数学系,广东东莞523808
摘 要:
设X,B分别是测得的位移矩阵和载荷矩阵,C是有限元方法得到的理论模型的估计,找广义中心对称的矩阵(A)使得(A)X=B,且是Frobenius范数意义下C的最佳逼近.并给出了解(A)的扰动分析,数值结果表明该方法是行之有效的.[著者文摘]

文章出处:
《应用数学》-2007年20卷4期 -675-680页
Mathematica Applicata
分 类 号:
文献标识码:
A
文章编号:
1001-9847(2007)04-0675-06
[参考文献]
Correcting a Generalized Centro-symmetric Finite Element Model by Using Test Data
XIE Dong-xiu , HUANG Ning-jun ,ZHANG Zhong-zhi ( Department of Mathematics, Beij ing Institute of Machinery Industry, Beij ing 100085, China; Department of Mathematics, Dongguan University of Technology, Dongguan 523808, China)
Abstract:
Let X,B be a displacement matrix and load matrix respectively by test data. Assume C (obtained by using the finite-element method) to be an estimate matrix of the analytical model. Find the generalized centro-symmetric matrix A to minimize the Frobenius norm of C-A and AX = B. The perturbation of the solution A is analyzed. Numerical results show that the method is feasible and effective.[著者文摘]
Key words:
Generalized centro-symmetric matrix; The optimal approximation; The perturbation
收稿日期: 2007-02-28
基金资助:
国家自然科学基金资助项目(10571012);北京市自然科学基金项目(1062005);北京市教委资助项目(KM200411232006)

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