Finite Element Analysis Of Excavator's Working Equipment

First, the text analyses the load of excavator's work device, put forward two kinds of fracture ways of the pole present—rupture tiredly and fracture of fragility, and analyzed the causes the factors of two kinds of fracture, for example, material fragility,defect,sneak the crackle and the centralized stress. Influence given up to the fragility; connecting form,stress state and the defect of weld to the influence of the tired ruptures.Secondly, employ ANSYS software to set up three-dimensional finite element model of job device when excavator in excavate strength, employ ANSYS software to carry on quiet intensity analyzing, modal analysis and dynamics analysis of the transient state to the job device.Finally, have produced modal parameter of the job device when adding and not adding the muscle board under state described above, and discuss two kinds of situations to the job device shaking type and influence of the frequency, increase the stiffness of job device, reduce after obtaining the quiet load of the job device after adding the muscle board, improved receiving the strength situation of the job device greatly.