The problems of sliding surface and severely distortedelement in hyperveiocity impact simulations are discussed, and the corresponding solving ways are proposed.
讨论了有限元法在高速侵彻模拟计算中出现的滑移面问题和单元大畸变问题，给出了相应的处理方法。
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And use the least squares technique to paraboloid fitting the finite element node on the distorted antenna.