有侧限矩形钢管在爆炸荷载作用下大变形分析  

Large Deformation Analysis on Rectangular Steel Tube with Lateral Restraint Under Blast Loading

作　　者：郭胜鹏[1] 顾红军[1] 

机构地区：[1]徐州空军学院,江苏徐州221000

出　　处：《噪声与振动控制》2009年第1期43-45,53,共4页Noise and Vibration Control

摘　　要：使用抗爆吸能器材能有效提高国防工程抗力,钢管在爆炸荷载作用下的大变形过程对这类器材研究具有重要意义。文章根据矩形钢管受冲击屈曲变形模态,分析应变强化和应变率效应对变形过程的影响,在此基础上建立模态解控制方程。实验表明,应变率效应是钢管动力大变形行为的首要影响因素,模态解结果与实验现象一致。Resistance of national defense project can be effectively improved by using anti -explosion and energy absorption device. Deformation process of steel tube under blast loading is of great significance for study of this device. According to the deformation mode of impact buckling of a rectangular steel tube, the influence of strain hardening and strain rate effects on the deformation process is analyzed, and the mode controlled equation is established. Experiments show that strain rate effect is the primary factor which influences dynamic deformation behavior of the steel tube. Computational results are in accordance with experimental phenomena.

关 键 词：振动与波 应变强化 应变率效应 变形模态 

分 类 号：TJ03[兵器科学与技术—兵器发射理论与技术]