砖砌体率相关本构模型

The Rate-Related Constitutive Model for Brick Masonry

本文根据砌体在动力加载下的力学特性,用改造力学元件并加以组合的方法建立起砌体的应变率相关本构关系。这种本构关系既能反映加载初期的压密应变,又能反映弹性模量、塑性强化、强度与应变率的关系。砌体的脆性也能得到反映。本文将模型用于描述砖砌体的动力变形特性,计算与实验结果吻合较好。

Based on mechanical performance of masonry under dynamic load a rate related constitutive relationship was established by improving mechanical elements with their combination.Such relationship reflects the compressive compaction strain during initial loading period,modulus of elasticity,plastic reinforcing,relationship between strength arid strain rate and brittleness of masonry as well. This model is used for describing the dynamic deformation characte- ristics of brick masonry.The results calculated are coincident well with that from experiments.