Co-Simulation solutions for Sliding Door Slam test using the Kinetics tool of ANSA

Apostolos Paraschoudis, Shantosh Patil



Coupled simulations are increasingly used in the field of predictive engineering. With high demand on reducing product development cycle, engineers are looking for reduced simulation time without compromising the accuracy of the solution. The need to address these demands, leads to coupled simulations which combine analyses from different engineering disciplines in a synergistic manner, exploiting the benefits that each of them offers. This paper describes the case of a sliding door slam test which, unlike traditional swing doors, undergoes a complex translational and rotational motion. The most commonly practised approach is to use a single finite element simulation solver such as LS-Dyna and Abaqus to simulate both rigid body motion along the tracks and the subsequent energy absorption when the door hits the body. This approach demands high computational time and solver resources. In this paper, a sequential coupled simulation is presented. The case is approached by splitting the analysis in two different simulations. First, a non-iterative Multi Body Simulation (MBS) within ANSA pre-processor that moves the door from its open position until just before its impact on the body is performed. Subsequently, an FE analysis with LSDYNA is performed using the MBS output as initial conditions. The deformations and the stresses are calculated in a FE analysis. The scope of this paper is to demonstrate how the co-simulation between ANSA and LS-DYNA can reduce the total simulation time compared to a single FE analysis and benchmark the accuracy of the results.