Research of the Amplitude Movement of Four-bar Linkage Arm by Multibody Analysis

The multibody analysis section of ANSYS program,multibody analysis theory based on finite element method,was introduced to develop a rigid body dynamics program for portal gantry crane′s four-bar linkage arm system.The program was based on the element MPC184 and ANSYS parameter design language(APDL) in ANSYS environment.As a practical engineering example,a portal crane was analyzed as rigid body model through this program.The simulation results were compared with the design criterion of arm system.A kind of new method for gantry crane′s arm system design and optimization was offered.