Comparative Dynamic Analysis of Sliding Door Based on LS-Dyna and ADAMS

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Comparative Dynamic Analysis of Sliding Door Based on LS-Dyna and ADAMS

Ma, Gangan / Qian, Rui / Gao, Yunkai

Nowadays, the design and development of the sliding door has been gained great attention for its easy egress and ingress. However, most studies on the kinematic and dynamic characteristics of sliding doors were based on the commercial code ADAMS, while the accuracy of flexibility in modal synthesis method and the ability of complex contact condition may not be guaranteed. Thus, a new dynamic analysis method by using the commercial code LS-Dyna was proposed in this paper to take into account the complex deformation and boundary conditions based on the finite element model. The impact force obtained from the Ls-dyna was compared with that from ADAMS when their monitoring points speed and closing time maintained the same during the sliding process. The impact force between the rollers and the guides was employed as evaluation criterion for different methods because of its effect on the roller wear and the moving smoothness in the sliding process. To validate the results, the impact force was measured by using the strain gauges and optical fibers measure. It turned out that the impact force from LS-Dyna agrees better with the experimental test than that from ADAMS. LS-dyna outperforms ADAMS, in terms of modeling method, dynamic analysis theory and boundary condition. In addition, the dynamic analysis based on finite element method in LS-Dyna environment can simulate the structural deformation and the motion space coupling boundary condition during the sliding process of door better.