A METHOD FOR ANALYZING OF SAFTY OF AERIAL PLATFORM TRUCK USING FINITE ELEMENT METHOD

摘要

A method for analyzing stability of a high place working vehicle with an FEM(Finite Element Method) is provided to analyze the stability of the high place working vehicle equipped with a 6-step boom over 60 meters by calculating bending stress in consideration for self-weight and concentrated load of the boom, and finding/reinforcing a statically/dynamically unstable part with analysis of a vibration type. The boom of the high place working vehicle is completely deployed and modeled according to an intersection of each step by using the FEM, and a finite element mesh is generated(S10). Maximum working load/height at the end of the deployed boom is set and a boundary condition of the boom is applied(S20). The stability of each step is checked by comparing sagging of each end with allowance stress according to the maximum concentrated stress and material of the boom while changing an angle between the ground and the deployed boom from zero to a maximum working angle(S30). Dynamic property is analyzed by including the lowest unique vibration frequency and mode of the deployed boom(S40).