基于计算机辅助工程的装载机液压油缸活塞杆疲劳寿命预测

摘要

The loader runs in a poor work environment and often requires continuous high-strength operation for a long time.Cylinder piston rod is the main executive unit and stressed component of the loader operation which may be broken after a long operation.The load spectrum of the working cycle of the piston rod may be obtained by analyses of the work stress of the loader and multi-body dynamics calculation via ADAMS software.Combined with ANSYS software for finite element static analysis,it is available to achieve multi-software joint simulation based on CAE and get the prediction results for fatigue life of the piston rod.This study has reference meaning for loader maintenance and remanufacturing industry.%装载机工作环境恶劣,且通常需要连续长时间高强度运行.油缸活塞杆是装载机动作的主要执行部件及主要受力部件,长时间工作后可能会发生断裂.对装载机工作时的受力进行分析,通过ADAMS软件进行多体动力学计算,得到活塞杆一个工作周期的载荷谱.结合ANSYS软件进行有限元静力学分析,实现了基于计算机辅助工程的多软件联合仿真,得到了活塞杆疲劳寿命的预测结果.这一研究对装载机维修与再制造产业具有参考意义.