摘要
该文针对火炮发射时高温高压火药气体瞬态冲击作用对复合材料身管的影响,进行复合材料身管三维瞬态热结构耦合分析。基于有限元分析方法(FEM),建立了复合材料身管三维有限元模型;采用直接耦合法进行求解,获得复合材料身管在发射条件下温度场和身管动态应力的变化规律。分析结果表明:高温高压的火药气体引起较大的瞬间热应力,这种瞬间热冲击对身管金属内衬的强度影响很大。
In order to study the influence of the transient impact of powder gas with high temperature and high pressure on the composite material barrel, a three-dimensional transient thermo-structure coupling analysis is conducted. The 3-D analysis model of the composite material barrel is established by using finite element method. The direct coupling analysis is employed as a solving strategy. The variation regularity of the temperature field and dynamic stress field of the composite material barrel on firing is obtained. The results show that the powder gas with high temperature causes large transient thermal stress and the transient thermal impact influences the linear strength obviously.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2007年第2期151-154,共4页
Journal of Nanjing University of Science and Technology
关键词
复合材料身管
瞬态冲击
耦合分析
有限元
composite material barrel
transient impact
coupling analysis
finite element method
