应力波形模拟中罚因子的取值  

Value of Penalty Factor During Simulation Stress Wave

作　　者：谷立芹[1] 俞亭超[1] 杨玉龙[1] 荆伟恩 赵敬国[1] Gu Liqin;Yu Tingchao;Yang Yulong;Jing Weien;Zhao Jingguo(Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058

出　　处：《科技通报》2017年第7期1-4,共4页Bulletin of Science and Technology

摘　　要：基于向量式有限元平面梁单元基本理论,模拟霍普金森实验装置与碰撞过程,利用Matlab软件编制基本程序,模拟不同罚因子取值下,杆中应力波波形。模拟结果表明,不同碰撞过程,罚因子最佳取值不同。子弹与入射杆碰撞过程罚因子取值在0.2~0.8之间为宜;入射杆与透射杆碰撞过程罚因子取值在2.0~4.0之间为宜。Based on the basic theory of vector finite element of plane beam element,the text simulatedHopkinson experimental devices and the collision process,designed the basic program by Matlablanguage,simulated stress wave in the bar under different value of penalty factor.Simulation results showthat different collision process had different optimal range of penalty factor.The value of penalty factor inthe collision between the bullet and the incident bar and between the incident bar and the transmissionbar is suitable for the0.2~0.8and2.0~4.0respectively.

关 键 词：罚因子 数值模拟 应力波 向量式有限元 

分 类 号：O347.4[理学—固体力学]