摘要
为了确定子中心起爆式导弹弹与舱壁间的相互作用力,针对战斗部内部结构的复杂性,提出了一种子弹模型简化方法,这为解决类似问题提供了一种方法。通过ABAQUS计算邻层子弹刚度,可简化为桁架结构模型,在ABAQUS中计算的桁架节点径向力即为子弹与舱体的相互作用力。最后通过解析几何法对桁架结构模型实行可靠性验证,对比结果表明,有限元法计算的结果与解析几何法之间的差距在3.2%范围之内,结果吻合度良好,证明了桁架模型的可靠性和可行性。
To obtain the interaction force between bullets and bulkhead,an approach has been proposed to simplify the bullet model because of the complexity of the internal structural position of the warhead. This also provides a way to solve similar problems. ABAQUS finite element code has been employed to calculate the stiffness of the bullets between adjacent layers. Then truss structure model has been established and truss radial force is the interaction of bullets and cabin. The comparison shows that the disparity between the calculation result of the finite element method and analytic geometry method is within the range of 3. 2%. The results show good agreement and hence proves the reliability and feasibility of the truss finite element model.
出处
《航空计算技术》
2018年第1期66-69,共4页
Aeronautical Computing Technique
基金
国家自然科学基金青年科学基金项目资助(11302105)
航空科学基金项目资助(2014ZF52074)
江苏省高校优势学科建设工程基金项目资助
关键词
子弹
舱壁
模型简化
有限元法
解析几何法
bullet
bulkhead
modeling simplification
finite element method
analytical geometry
