爆炸荷载作用下钢纤维混凝土梁的动力响应分析

Dynamic Response of Steel Fiber Concrete Beam under Explosive Load

在混凝土、钢纤维混凝土已有动力实验资料的基础上,以材料动力强度提高系数与应变速率的关系为主要依据,建立了材料的一维粘弹塑性动力本构模型并用chen-chen模型将其推广为二维动力本构模型。运用改进了的chen-chen模型对钢纤维混凝土简支梁进行了非线性动力响应分析,所得结果与实验结果吻合良好。

Based on the existing dynamic experimental data of concrete and steel fiver concrete, the dynamic model of one dimension about the connection between stress and strain is developed in the paper. The dynamic model of one dimension is extended to the dynamic model of two dimensions according to the Chen-Chen model. The nonlinear analysis of the simply supported steel fiber beam is done according to the improved Chen-Chen model. The result is consistent with the experimental result.