Transactions of Materials and Heat Treatment

Title：Thermal stress coupling finite element analysis and structural optimization of multilayer flat extrusion container

Authors： Xie Lingling Chen Changpeng Chen Yinghua Deng Xiaomin

Unit： Anhui University of Technology

KeyWords： flat extrusion container orthogonal experiment method finite element thermal stress coupling interference

ClassificationCode：TG375

year,vol(issue):pagenumber：2017,42(3):90-95

Abstract：

The coupled thermal mechanical numerical simulation was carried out by the indirect method for the multilayer flat extrusion container based on ANSYS software, and the temperature and stress distribution were analyzed under different extrusion conditions of internal pressure, preloaded stress and thermal load. Then, the influences of inner working pressure, magnitude of interference, numbers of bushing, inner hole size, overall size and tool material on the thermal stress distribution of flat container were analyzed by the orthogonal experiment method. The results show that the inhomogeneous distribution of temperature has an increasing tendency from the outer bushing to the inner bushing, and the outer temperature is more uniform than that of inner and intermediate. Furthermore, the equivalent stress distribution of the flat extrusion container is more uniform due to the existing thermal stress, and the equivalent stress and contact stress of the container increase with the increases of inner pressure and magnitude of interference. Thus, the applications of threelayer, appropriate sizes of inner hole and intermediate bushing, and economical rationally die material are of great advantages to enhance the assembly effect and to reduce the equivalent stress. At last, the reasonable process parameters are obtained, which provides the reference for optimizing the structure design and assembling the flat extrusion container.

Funds：

安徽省创新创业计划资助项目(201510360125)

谢玲玲(1978-)，女，硕士，讲师

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