根据转台结构在起吊工况下的动力学特性，结合实际情况建立有限元动力学模拟的载荷模型。
Combining the dynamics characteristic of crane on lifting and the real structure, the loading model for finite element simulation is presented.
在分析影响起重机金属结构疲劳载荷情况的基础上，给出了起重机主梁起吊过程中不同阶段的动力学模型。
The paper builds the models at different stages of lifting operation on the basis of analysis of loads influencing crane structure fatigue.
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