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.

• 摘要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。