锻压技术

100 MN液压锻造机预紧组合式机架的有限元分析

英文标题：Finite element analysis on pretightened combination frame for 100 MN hydraulic forging machine

作者：殷正瑞李兴成刘凯磊周宇江弥峰

分类号：TG315.4

出版年,卷(期):页码：2019,44(8):106-111

摘要：

针对100 MN液压锻造机预紧组合式机架承载时出现的开缝和变形现象，运用SolidWorks进行机架的三维建模，通过ANSYS Workbench进行液压锻造机机架的静力学分析，得出预紧系数与机架的开缝和变形系数的关系，确定机架的最佳预紧力为160 MN。通过机架在承载时的变形云图和应力云图，分析机架的最大变形和应力集中的位置，以此为依据对C型板的厚度和圆角半径，以及上隔梁的结构进行优化，将优化后的机架结构再进行静力学分析。结果表明，机架结构优化后，机架承载时的最大应力为166.56 MPa，满足初始设计强度要求；机架变形系数减小，在竖直方向的变形明显减小。

For the problems of slit and deformation for the pretightened combination frame of 100 MN hydraulic forging machine during loading, three dimension model of frame was built by SolidWorks, and the static analysis on the frame of hydraulic forging machine was conducted by ANSYS Workbench. Then, the relationships between pretightening coefficient and slit as well as deformation coefficient of frame were obtained, and the optimum pretightening force was determined to be 160 MN. Furthermore, the positions of the maximum deformation and stress concentration in the frame were analyzed by the deformation and stress nephograms of the frame during loading, the thickness and fillet radius of Cshaped plate as well as the structure of upper partition beam were optimized on this basis, and the static analysis of the optimized frame structure was analyzed again. The results show that the maximum stress is 166.56 MPa after optimization of the frame structure, which satisfies the original design strength requirement. In addition, the deformation coefficient of frame reduces, and the deformation in the vertical direction reduces significantly.

基金项目：

国家自然科学基金青年基金（51805228）；江苏省高校自然科学基金面上项目资助（18KJB460010）

作者简介：殷正瑞（1993-），男，硕士研究生 E-mail：linyiyzr@163.com 通讯作者：李兴成（1968-），男，博士，教授 E-mail：sgylxc@163.com

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