动载作用下钢筋混凝土梁非线性有限元分析

Nonlinear finite element analysis of reinforced concrete beam under dynamic loading

利用大型通用有限元软件ANSYS对钢筋混凝土梁在爆炸荷载作用下的动力响应进行数值模拟,其中,混凝土采用ANSYS软件中特有的SOLID65单元类型和专门的材料模型CONCRETE,钢筋采用LINK8杆单元和随动硬化双线性弹塑性(KinematicHardeningBilinearPlasticity)模型来实现,并与Suidan和Schnobrich[1]的方法进行比较,计算结果与Suidan和Schnobrich预示的响应十分吻合。

Using large-scale multi-purpose finite element program ANSYS to simulate the dynaimic response of reinforced concrete beam under blast loading.The concrete adopts ANSYS own element type-SOLID65 and special material model-CONCRETE,the reinforcing steel bar adopts LINK8 element type and kinematic hardening bilinear plasticity material model.Compared with suidan and schnobrich's^() method,the results tallies with the response which suidan and schnobrich has indicated.