The parametric potential energy principle and the generalized parametric variational principle are developed in the limit analysis of the non-associated flow rule materials.
本文对服从非关联流动法则下的刚塑性极限分析问题，提出了参数势能变分原理和参数广义变分原理。
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Some basic concepts and the essential control equations of non incremental algorithm based on the optimal control variational principle in mechanics are presented in this paper.
By the variational method, the governing equation of the plate non-linear theory is solved, and he relationship between load and deformation of a single spring leaf is obtained.