【摘要】 利用二维动力学计算程序对发射时EB穿甲弹内应力场进行了数值分析，材料物性参数取自实验结果，并合理地归纳为线性强化弹塑性模型，在计算中首次考虑了弹带对弹体受力的影响。本计算给出了拉、压、剪应力的轴向分布和某些令人关注部位的应力时程曲线，并对发射时弹体可能的危险部位提出了具有实用价值的分析。更多还原

【Abstract】 Two-dimensional numerical simulations and analyses have been carried out for the dynamic stress fields of an EB-type long-rod armour-piercing projectile under firing conditions.The constitutional curves of materials were taken from experimental results and reduced reasonably to a linear-hardening elastic-plastic model.The influences of shell band on the stress field of projectile were considered for the first time.This work gives curves of compression,tensile and shear stress against time,the contour of stress in projectile,as well as the stress-time history in some positions of interest and provides a valuable analysis to the possible positions of failure in projectiles,underfiring conditions.更多还原