Abstract: Aimed at the errors between the test response fields and the analytical response fields, a parameter based update methodology for improving finite element modesl is pressnted. In the proposed method, first of all, the parameters having great correlative degrees with the test response fields are chosen by statistical analysis, and then these parameters are updated by the optimal technique on the results of experimental response fields. Since only the main parameters are updated, the optimal procedures become very easy. Numerical results are presented, which show that the proposed method is feasible and practical in engineering.

Key words: regression analysis, hypot hesis verification, optimization technique