应用ANSYS Workbench对大断面集成材压机机架的优化设计

利用ANSYS Workbench有限元分析软件对大断面集成材压机机架的单个框架进行了静力学分析,以其质量与强度指标为目标,采用ANSYS Gold Driven Optimization模块进行优化设计,旨在研究框架工作过程中的应力、应变分布状态,降低框架生产成本。研究结果表明:优化前,框架存在局部应力集中现象,但最大应力为156.2 MPa,明显小于框架的许用应力196 MPa,强度富余,有进一步优化的空间;水平和垂直方向的最大位移值分别为0.31、0.08mm,刚度可靠。优化后,框架的最大等效应力与最大位移分别为179.8 MPa与0.44 mm,保证框架强度与刚度的前提下,框架的质量降低了26.3%,可显著降低生产成本。

Optimization Design of Pressing Machine Frame by ANASYS Workbench Software

The finite element model for pressing machine frame was created by ANSYS Workbench software.The statics analysis was completed.The gold driven optimization was applied for optimization design processing to reduce the mass of frame. The statics analysis results indicated that some local stress concentration was found in the chamfer position of frame in orig-inal design.The maximum stress in the frame was 156.2 MPa, which was lower than permissible stress of the selected ma-terial (196 MPa).The displacement in horizontal and vertical direction were 0.31 mm and 0.08 mm, respectively.It satis-fied the stiffness requirements of material.The statics analysis results showed that it was possible to optimize the structure size of frame due to the strength surplus.After optimization, the maximum stress and total displacement were 179.8 MPa and 0.44 mm, respectively.The optimized results could be satisfied the stiffness and strength requirements of frame.The mass of frame reduced by 26.3％compare to the value before optimization.