对DYNA3D中K&C混凝土模型的探讨  

DISCUSSION ON K&C CONCRERE MODEL FOR CONCRTE IN DYNA3D

作　　者：张传爱[1,2] 方秦[1] 陈力[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007 [2]工程兵指挥学院,江苏徐州221004

出　　处：《工业建筑》2010年第S1期288-292,共5页Industrial Construction

基　　金：国家自然科学基金重点项目(50638030;5052825;90815010);国家科技支撑计划(2006HBJ13B02)

摘　　要：LS-DYNA3D有限元软件中的K&C混凝土模型(MAT_CONCRETE_DAMAGE)充分考虑了混凝土材料的应变率效应、损伤效应、应变强化和软化作用,近年来在爆炸、侵彻等方面得到广泛应用,但对其在爆炸荷载作用下结构动力分析的能力却研究不够。首先介绍K&C混凝土材料模型的基本原理,然后通过模拟FOAM HEST试验研究了其预测爆炸荷载作用下钢筋混凝土构件动态响应的能力,并将分析结果与试验数据进行了对比。结果表明,该材料模型可以较好地预测爆炸动荷载作用下钢筋混凝土构件的动态响应。The Karagozian & Case concrete model described in the finite element code LS-DYNA3D includes strain-rate effects,damage,the hardening and softening plasticity responses of concrete.The model has been widely used for RC structures subjected to blast loads and penetration in recent years.However,the capability of K&C concrete model to analyze the dynamic responses of RC structures subjected to blast loads has not been well evaluated.In the paper,the model was described and adopted to simulate the dynamic responses and fail modes of the blast-loaded RC members in FOAM HEST tests.The numerical results were compared with the test data.The results showed that the dynamic responses of RC members under blast loading condition could be well predicted by the model.

关 键 词：LS-DYNA3D K&C混凝土模型 有限元 动态响应 

分 类 号：TU528[建筑科学—建筑技术科学]