缆索吊装系统冲击系数的分析计算

Analysis and Calculation of Impact Coefficient of Cable Hoisting System

本文采用大型有限元软件ANSYS建立实体精细化模型,以滑轮代替天车,模拟天车在缆索上运动过程中缆索的力学性能变化情况,确定缆索吊装计算公式中的冲击系数,为缆索吊装系统的设计提供更精确的数据。分析表明,在缆索吊装计算过程中,在考虑动力情况下的弯曲应力比不考虑动力情况下的弯曲应力大,但增大的幅度较小。通过计算,最终确定动力冲击系数μ的范围是1.05~1.1。

In this paper,a large-scale finite element software ANSYS is used to establish a refined model of solid bodies.A pulley is used instead of a crane to simulate the change in the mechanical performance of the cable during the movement of the crane on the cable.The impact factor in the cable lifting calculation formula is determined to be the cable.Lifting system design provides more accurate data.The analysis shows that in the cable lifting calculation process,the bending stress under the consideration of power is larger than the bending stress under no power consideration,but the increase is small.Through calculation,the final determination of the dynamic impact coefficientμis in the range of 1.05.~1.1.