摘要
为了研究弹丸侵彻软质纤维防护的规律,在分析软质纤维层的抗弹侵彻问题的基础上,建立了弹丸侵彻超高分子量聚乙烯软质纤维层(UHMWPE)的有限元模型,并采用Lagrange算法作为计算方法数值仿真了弹丸的整个侵彻过程。数值仿真结果与真实试验能很好的吻合,验证了仿真中材料模型和计算方法的可靠性。通过数值仿真,论证了软质纤维层的破坏主要源于弹丸的剪切和拉伸作用,同时获得弹丸能量转化和加速度变化的规律,对优化防护装备和指导枪弹的设计都有一定意义。
To study the law of projectile penetrating the soft fiber layer. Base on the anti - penetration mechanism of the soft fiber layer, the finite element model is established and Lagrange algorithm is the calculation method. The numerical simulation results and real experiment coincide well. That confirms the validity of the material model and numerical simulation. Through numerical simulation, the destruction of the soft fiber layer is mainly due to the shear stress and tensile stress. At the same time, obtain the law of the energy transformation and the change of accelera- tion. The study is significance for the design of protective equipment and bullet.
出处
《计算机仿真》
CSCD
北大核心
2013年第10期6-9,212,共5页
Computer Simulation
基金
国家部委资助项目(6131040302)
