作　　者： ; ; ;

机构地区： 长安大学公路学院

出　　处： 《振动与冲击》 2012年第15期140-145,共6页

摘　　要： 采用弹塑性损伤帽盖模型对筋混凝土梁冲击试验进行了数值模拟,数值模拟得到的碰撞力、梁体跨中挠度以及梁体破坏状况与实验情况吻合较好。在此基础上讨论了混凝土材料应变软化段、描述塑性体积的帽盖面、强度准则子午线形状、偏平面形状以及钢筋混凝土结构建模方式对冲击数值模拟的影响。 The elastoplastic damage cap model was applied to simulate the impact test of reinforced concrete beam.The collision force,the midspan deflection and the damage state of the beam obtained in the numerical way agree well with the test results.The influences of the strain softening section,the cap surface configuration which describes the plastic volume,the shape of its meridian and deviatoric plane in strength criteria of concrete as well as the concrete modelling method on the results of numerical simulation of the impact test were discussed.

关 键 词： 钢筋混凝土梁 冲击试验 数值模拟 弹塑性损伤帽盖模型

领　　域： [建筑科学]