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何丽灵 陈小伟. 高速侵彻混凝土弹体的形状演化模拟[J]. 力学学报, 2011, 43(4): 707-715. DOI: 10.6052/0459-1879-2011-4-lxxb2010-476
引用本文: 何丽灵 陈小伟. 高速侵彻混凝土弹体的形状演化模拟[J]. 力学学报, 2011, 43(4): 707-715. DOI: 10.6052/0459-1879-2011-4-lxxb2010-476
He Liling Chen Xiaowei. Simulation of variation of projectile nose during high-speed penetration into concrete[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(4): 707-715. DOI: 10.6052/0459-1879-2011-4-lxxb2010-476
Citation: He Liling Chen Xiaowei. Simulation of variation of projectile nose during high-speed penetration into concrete[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(4): 707-715. DOI: 10.6052/0459-1879-2011-4-lxxb2010-476

高速侵彻混凝土弹体的形状演化模拟

Simulation of variation of projectile nose during high-speed penetration into concrete

  • 摘要: 高速侵彻时, 弹靶间摩擦力所做功全部转变为热并作用于弹体, 假设弹体质量损失来源于弹体表面材料熔化脱落, 可以预测弹体总质量损失. 结合分析得到的弹靶间摩擦功与压力轴向功关系, 通过相应的弹体质量损失分析, 获得侵彻过程中弹体表面各点的回退位移(垂直于弹体轴心线方向), 实现弹体形状演化的模拟. 弹体形状、侵彻深度及质量损失的计算结果均与实验结果基本吻合.

     

    Abstract: A formula for estimating total mass loss of projectilewas developed with the assumptions of the peeling of molten surface inprojectile nose as the primary cause of mass loss and the frictional heattotally accepted by projectile. In combination of the linear relationshipbetween friction work and work done by pressure, the receding displacementof every point on projectile surface, which is vertical to the projectilesymmetry axis, is obtained based on the formula for estimating total massloss. Thereby, the variation of projectile shape is simulated. The shape ofresidual projectile, the depth of penetration (DOP) and projectile mass lossobtained by calculation are in good consistency with the correspondingexperimental results.

     

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