100% Original Mg Zs Car Accessories - SAIC MG RX5 Rear door handle liner -10196182 – Zhuomeng

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The advantage of inertia release method is that the model is simple and does not contain complex body in white. Calculations utilize linear analysis, response and iteration fast. The difficulty is that accurate determination and adjustment in the simulation process need to rely on the support of a large number of historical data and engineers’ development experience, and can not consider the dynamic effect and materials, contact and other nonlinear factors in the process.

Multibody dynamic method

The multi-body dynamics (MBD) method is relatively simple and iterative to evaluate the structural durability of body closing components. The fatigue life can be predicted quickly according to the process and the finite element model of the closing parts as shown in the following figure. In the multi-body model, the locking mechanism of the closing parts is simplified into a rigid body element, the buffer block is simulated by a spring element with nonlinear stiffness characteristics, and the key sheet metal structure is defined as a flexible body. The load of the key contact parts is obtained, and finally the fatigue life of the closing parts is predicted according to the stress-strain and deformation effects.

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