Flexible Dynamic Analysis of Hydraulic Excavator’s Boom

To study the dynamic response of hydraulic excavator’s boom under different road condition, this paper set up numerical model of excavator’s working device, then set up the virtual prototyping simulation model of excavator’s working device and simulated the flexible dynamic response characteristics of the boom based on multi-body dynamic software, RecurDyn. The results showed that, modeling and simulating method based on rigid multi-body coupling flexible multi-body dynamic modeling and analyzing technologies, reproduced the actual working conditions truly. The dynamic stress’s rule of variation provides an important method for the structure design and force analysis of hydraulic excavator’s working device.