This article has analyzed the modal of EOT cranes rope system by use of FEA software-ANSYS,worked out each steps natural frequency of the system,realizing proper check of dynamicrigidity.

• 运用有限元分析软件ANSYS对起重机钢丝绳滑轮组进行模态分析,计算出钢丝绳系统各阶固有频率和振型,实现了对钢丝绳系统动态刚性的校核。