摘要
在分析高比重钨合金弹芯挤压变形缺陷产生形式的基础上,利用钨合金变形体塑性区内的速度场分布,推导了变形钨合金弹芯形成内部破裂和表面破裂条件的力学判据,并绘制了两种变形缺陷的力学判据曲线图。试验结果表明,该力学判据将为合理制定液力挤压变形工艺参数、设计优化工模具结构、预测挤压变形缺陷和提高挤压制品质量提供重要的理论依据。
The mechanics criterions of deforming WHA interior and surface crack were derived from deformation body plasticity zone speed field distribution, and two sorts of mechanics criterions curve were plotted during analyzing high density WHA deformation defects. The research results show that the mechanics criterion will become important theory base to correctly establish hydraulic extrusion deformation technology parameter, to design optimization extrusion die structure,to predict deformation defects and to improve extrusion production quality.
出处
《弹箭与制导学报》
CSCD
北大核心
2006年第2期49-53,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
国防科工委基础科研计划资助项目(Z0900E006)
关键词
液力挤压
钨合金弹芯
变形缺陷
力学判据
hydraulic extrusion
tungsten alloy ballistic body
deformation defect
mechanics criterion
