摘要
为掌握复合材料定向管的动态力学性能，了解复合材料定向管动力响应的应力、应变和变形位移情况，建立了复合材料定向管受载的力学模型，利用动力有限元法仿真计算了火箭弹的发射过程，然后对定向管壁厚值进行了对比优化分析。结果表明：动力有限元法是有效的仿真计算方法，复合材料定向管在发射开始阶段产生的响应应力和应变较大，后端产生的响应应力和变形位移比前端大，确定的合理壁厚值范围为3．6～4．1mm。该研究为某火箭炮复合材料定向管的研制提供了参考。
In order to hold the dynamic mechanical performance of composites directional tube and understand the dynamic response results of stress, strain and deformation displacement for composites directional tube, a mechanical model of bearing load of composites directional tube is established. A simulation model of rocket projectile launch process is established and simulation calculation is done with dynamic finite element method. Optimization analysis by comparison is done for the thickness values of directional tube wall. The results indicate that the dynamic finite element method is an effective approach for simulation calculation, the response stress and strain of composites directional tube are bigger at the start stage of launch, and that the response stress and deformation displacement of composites directional tube end is bigger than forepart. The rational range of thickness values of directional tube wall is from 3.6mm to 4. lmm. The study provides references for research and manufacture of composites directional tube of some rocket launcher.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第3期315-319,共5页
Journal of Nanjing University of Science and Technology
关键词
复合材料
定向管
动力有限元法
响应
composites
directional tubes
dynamic finite element method
response
