A new simplified analytical model for soil penetration analysis of rigid projectiles using the Riemann problem solution

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• 作者：V.R. Feldgun ; D.Z. Yankelevsky ; ^{davidyri@tx.technion.ac.il} ; Y.S. Karinski
• 关键词：High velocity soil penetration ; Riemann problem ; Irreversibly compressible medium ; Shock and rarefaction waves ; Bulk plasticity
• 刊名：International Journal of Impact Engineering
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：101
• 期：Complete
• 页码：49-65
• 全文大小：4183 K
• 卷排序：101

文摘

A new simplified analytical model for penetration analysis of rigid projectiles into soil is developed. The soil medium is represented by thin plane strain discs, responding in the radial direction. The new model is based on the exact Riemann problem solution for an irreversible compressible medium. The model employs the exact nonlinear equation of state including unloading-reloading. Analysis focuses on the projectile–soil interface and predicts the projectile motion information. Very good predictions are obtained in comparison to test data and to computer code analysis.