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以4090香蕉形直线振动筛为分析对象,考虑铆钉联接对结构性能的影响,采用多点约束方法处理铆钉联接,建立有限元模型,对施加最大荷载时的振动筛做静力学分析,得到最大应力分布,确定结构最危险部位。考虑应力集中、疲劳缺口、尺寸、表面状态、加载方式等因素对结构疲劳寿命的影响,对材料的s-n曲线进行修正。在静力学分析结果的基础上,结合修正后的s-n曲线,对结构进行疲劳分析,最终得到振动筛疲劳寿命.
Taking 4060 banana-shaped linear vibrating screen as the analysis object, considering the influence of the riveting connection on the structural performance, the multi-point restraining method was used to deal with the riveting connection and the finite element model was established. The static stress analysis was carried out on the vibrating screen under the maximum load to obtain the maximum stress Distribution, determine the structure of the most dangerous parts. Considering the influence of stress concentration, fatigue gap, size, surface state and loading method on the fatigue life of the structure, the s-n curve of the material is corrected. On the basis of the static analysis results, combined with the modified s-n curve, the fatigue analysis of the structure, the final vibration sieve fatigue life.