Failure analysis of die-casting mold ejector rod based on eigenvalue buckling theory

Aiming at the problem that the ejector rod in the die-casting mold fails and loses its load-bearing capacity under actual harsh conditions, this paper analyzes the failure of the ejector rod due to buckling instability from the eigenvalue buckling theory, and proposes a combination of theoretical calculation and finite element simulation analysis method. Using Workbench finite element analysis software, a finite element numerical analysis model of the experimental device that simulates the mold conditions was established. Through static simulation analysis, linear buckling analysis and nonlinear buckling analysis of the experimental device, the buckling mode, displacement, stress, strain nephogram and deflection curve of the experimental device under a given load are given. The reliability of the simulation results is proved by the mutual verification between the theoretical calculation results and the simulation results.