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以立式辊磨机下摇臂为研究对象,对其受力情况进行简化,在液压拉力最大的情况下计算得到各部位受力数值。利用Solid Works建立下摇臂模型,并导入ANSYS Workbench中进行有限元分析,验证其强度刚度,得知其最大应力为47.168 MPa,位于下摇臂下端,且远小于材料许用应力。在此基础上,为改善下摇臂质量较大的情况,利用ANSYS Workbench的目标驱动优化(GDO)模块,以质量最小为优化目标进行优化设计。优化改进后,在强度刚度满足设计要求的前提下,下摇臂质量减小了16.30%,优化效果显著,该研究对立磨的设计及改造有一定的参考价值。
With the vertical roller mill under the rocker as the research object, its force situation is simplified, and the stress value of each part is calculated under the condition of the maximum hydraulic tension. The lower rocker model was established by Solid Works and imported into ANSYS Workbench for finite element analysis to verify its strength and rigidity. The maximum stress was 47.168 MPa, which was lower than the lower rocker arm and far less than the allowable material stress. On this basis, in order to improve the quality of lower rocker arm, ANSYS Workbench’s target-driven optimization (GDO) module is used to optimize the design with minimum mass as the optimization objective. After the optimization and improvement, under the premise of the strength and stiffness meeting the design requirements, the lower rocker arm mass is reduced by 16.30%, and the optimization effect is remarkable. The research has certain reference value for the design and modification of vertical mill.