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Door Slam

The slam of a car door is a dynamic process which influences the durability of the door structure. In this simulation example the flexible door was accelerated to reach a defined impact speed. A correct modelling of the sealing stiffness and the latch mechanism is necessary to reproduce the peak loading.

The analysis of the linear model without contact interfaces indicated unrealistic penetration of metal sheets in the area of the latch. By simulating the door slam with activated MAMBA contacts, a realistic loading could be reproduced. Both simulation results were utilized as input for a subsequent fatigue assessment. A comparison of the highest damaged spot welds emphasized the necessity of including contacts for a door slam simulation.

Benefits

  • Realistic loading of door structure for fatigue analysis
  • Reduced simulation time compared to explicit finite element solvers
Vehicle door of a passenger car

The model with contact consideration shows no penetration of the inner sheet components and the outer shell

The model with contact consideration delivers spot weld damage values comparable to the results of a nonlinear finite element analysis