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组合扁挤压筒强度分析和优化设计中的关键是合理地确定预应力场,本文利用有限元混合法,处理组合扁挤压筒过盈配合接触问题,成功地解决了组合扁挤压筒预应力场的分析和计算。计算结果表明,过盈配合面上的接触力不是均匀分布的;有限元混合法是一种解决扁挤压筒和异形内孔组合凹模预应力场计算的有效方法。
The key point in the strength analysis and optimization design of the combined flat extrusion tube is to determine the prestressing field reasonably. In this paper, the finite element method is used to deal with the problem of the interference fit and contact of the flat extrusion tube. Stress field analysis and calculation. The calculation results show that the contact force on the interference fit surface is not uniformly distributed. The finite element method is an effective method to solve the prestress field calculation of the flat extrusion tube and the profiled inner hole composite die.