基于动力分析的扫石器支架结构优化设计

Structural optimum design of stone sweeper bracket based on dynamic analysis

文章采用动力分析的方法,使用ANSYS分析软件进行建模及求解,通过对扫石器支架结构模型进行模态和参与系数计算,确定贡献最大的振型,从而有针对性地进行结构优化。同时,参照IEC61373标准,采用随机振动的方法对优化前后的扫石器支架结构进行仿真分析计算,以三区间评估方法进行疲劳强度评估,结构优化后应力水平显著降低;并对优化后的扫石器支架进行随机振动试验,试验结果满足标准要求。这种基于动力分析进行结构优化的方法,能够快速找到优化的方向,有针对性地进行结构改善,以达到使用和标准要求。

In this paper, the dynamic analysis method is adopted and the analysis software ANSYS is used to model and solve. By calculating the mode and participation coefficient of the stone sweeper bracket structural model, the mode shape with the largest contribution is determined, so as to optimize the structure. At the same time, according to the IEC 61373 standard, the random vibration method is used to simulate and calculate the stone sweeper bracket structure before and after optimization, and the fatigue strength is evaluated by the threeinterval evaluation method. The stress level is significantly reduced after structural optimization. The optimized stone sweeper bracket is subjected to random vibration test, and the test results meet the standard requirements.Using dynamic analysis method to optimize structure can quickly find the direction of optimization for carrying out targeted structural improvements to meet the requirements of use and standards.