弹带挤进过程身管内壁损伤的数值模拟研究

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摘要针对火炮发射过程中内膛的损伤、裂纹萌生和扩展问题，基于HLC细观损伤本构模型建立了相应的损伤力学有限元数值计算方法，将完全隐式应力更新算法与显式有限元计算相结合，通过用户自定义材料子程序VUMAT将损伤模型嵌入到有限元软件ABAQUS/EXPLICIT模块中。对某型火炮多发射击工况下内膛损伤破坏过程进行了数值模拟计算，分析了弹带挤进内膛过程中身管内壁材料性能随射弹发数变化的规律，并与实验进行了对比。结果表明：HLC细观损伤模型可以有效揭示身管内膛复杂的损伤行为并预测破裂缺陷，为火炮身管安全性设计提供有益的参考。

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	刘广生1
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	孙河洋2
	周伟

关键词 ：细观损伤本构, 冲击, 身管, VUMAT

Abstract：A Damage mechanics finite element numerical computation method was established based on HLC microscopic damage model to solve the problem of damage, crack initialization and growth inside bore during the firing process, which combines completely implicit stress renewing algorithm and explicit finite element computation. The method embeds the damage model into the finite element software ABAQUS/EXPLICIT module through VUMAT subroutine. The damage and failure process of the bore surface was simulated numerically during multiple rounds of firing. The law of the barrel material performance changing with the number of firing rounds was analyzed during the engraving process of the driving band and compared with the experimental results. It is proved that HLC microscopic damage model can show the complicate damage behavior and predict the cracking defect, which provides a reference for safety design of the gun barrel.

Key words： microscopic damage constitution impact; nonlinearity VUMAT

收稿日期: 2014-04-15 出版日期: 2015-07-15

引用本文:

刘广生1,2，孙河洋2，周伟. 弹带挤进过程身管内壁损伤的数值模拟研究[J]. 振动与冲击, 2015, 34(13): 78-82.
Guangsheng Liu1,2，Heyang Sun2，Wei Zhou3. Numerical Simulation of Gun Bore Damage During Engraving Process of Driving Band. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(13): 78-82.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I13/78

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