Failure Reason Analysis of Track Plate Fracture of Construction Machinery
In order to explore the cause of failure,macro fracture morphology and ANSYS finite element simulation analysis were carried out.Direct reading spectrometer,metallographic microscope and scanning electron microscope were used to observe the microstructure and inclusions of the fracture.Tensile testing machine and impact testing machine were used to detect the mechanical properties of the broken track plate.The results showed that there were large non-metallic inclusions in the fracture of the track shoe,which seriously destroy the continuity of the steel matrix and cause local stress concentration of the track plate.Under the action of the alternating stress of the main engine,cracks are generated and spread,and finally early fracture failure occurs due to insufficient strength.
NETL
NSTL
万方数据
