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钨杆超高速侵彻碳化硼陶瓷的数值模拟研究

Keywords: 碳化硼陶瓷,超高速侵彻,数值模拟,SPH算法

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Abstract:

采用AUTODYN流体编码,对钨杆(L/D=20,L为钨杆长度,D为钨杆直径)以1.5~5.0km/s的速度侵彻碳化硼(B4C)陶瓷的全过程进行了数值模拟研究,其结果与实验进行了比较.结果表明,数值模拟与实验结果吻合较好.在此基础上研究了算法、网格尺寸及侵蚀应变值的大小对钨杆侵彻速度(u)、侵蚀速度(vc)及侵彻深度(h)的影响.并得出了钨杆侵彻速度、侵蚀速度及侵彻深度与撞击速度(v)之间的函数关系式.

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