【作者】 徐荣珍；

【导师】 刘全坤；

【作者基本信息】 合肥工业大学 ， 材料加工工程， 2003， 硕士

【摘要】 应用Lame公式对组合凹模进行优化有一定的应用局限性，尤其当凹模承受局部内压作用时，Lame公式优化的结果偏于保守。因此本文在塑性成形理论的基础上，借助于有限元分析软件ANSYS分析整体内压和局部内压工况下组合凹模的应力分布规律，并在此基础上对这两种情况下的组合凹模进行优化，通过比较整体内压下ANSYS优化和Lame公式理论优化的结果验证了ANSYS优化的可靠性。 另外，为获得挤压凹模内壁的侧压力分布曲线，本文应用MARC软件对杯形件的挤压过程进行数值模拟，得出挤压过程中每一时刻的应力、应变、金属流动等的变化规律，并着重对凹模内壁的内压力的分布进行探讨，找出其影响因素。 本文最后对研究成果进行总结和展望，并提出存在的问题和进一步研究的方向。更多还原

【Abstract】 Lame formulation has limitation in optimizing combined-containers, especially when pressure is only applied on local area of the containers. So based on plastic forming knowledge, large FEA software ANSYS is used to analysis stress distribution in containers and furthermore to optimize combined-containers in such two situations: whole internal pressure and local internal pressure. The reliability of ANSYS optimization is proofed by comparing results of ANSYS and Lame formulation when the containers are subjected to whole internal pressure.To get contact pressure distribution curve, MARC is used to do numerical simulation of cup extruding. Stress, stain, displacement and other simulation results are retrieved. Internal pressure on the inner wall of the container was discussed emphatically and its influence factors are discussed.At the end of the paper, research results are concluded, and the direction of further research is pointed out.更多还原