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研究给出长杆模拟弹内弹道发射强度实验结果与数值计算分析，结果表明，长杆弹在发射状态被拉断的直接原因是弹体材料在危险截面处的应力值达到或超过了材料的动态屈服强度。
The experimental results and numerical calculation of the projectile launching strength of the long rod simulation are given. The results show that the direct reason that the long rod projectile is pulled off in the launching state is that the stress value of the projectile material at the dangerous cross section reaches or exceeds the value of the material Dynamic yield strength.