侵彻体撞击钢筋的接触算法研究

钻地弹的侵彻规律研究成为武器开发和目标防护的重点.考虑钢筋对弹体运动的影响，本文基于弹体与钢筋作用的等效单自由度模型，建立了侵彻体和钢筋碰撞的接触算法，弹体和钢筋分别简化为钢球和固支梁，将梁构件的抗力当做弹体的阻力.将算法进行编程实现，并通过商业软件AUTODYN计算初步验证了弹-筋接触程序的合理性.

Research on the Contact Algorithm between the Penetrator And Steel Reinforcement in the Penetration

Nowadays, the law of penetration into the underground target is one of the key points in the weapon development and high value targets protection. Considering the influence of the steel reinforcement on the projectile''s trajectory,a contact algorithm is put forward to describe the contact phenomenon between the penetrator and the steel in the penetration into the RC target. The contact algorithm is based on the equivalent single degree of freedom (SDOF) method, where the penetrator is simplified as a ball and the reinforcement steel is considered as the beam with a fixed-fixed boundary, and the resistance of the steel beam is considered as the contact force exerted on the penetrator. The resistance function presented here is validated by the comparison between the simulations with the code and the commercial software AUTODYN. In general, the contact algorithm is reasonable and effective in the simulation of the interaction between the penetrator and the steel.