| CPC G06F 30/20 (2020.01) [G06F 30/15 (2020.01); G06F 30/17 (2020.01)] | 8 Claims |
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1. An analysis method of optimizing vibration performance of a part of an automotive body, the analysis method being performed by a computer, and comprising:
acquiring a maximum displacement of vibration of the part of the automotive body by:
applying a predetermined excitation condition to the part of the automotive body; and
performing vibration analysis by using frequency response analysis and adding up sine-wave displacements of respective frequencies based on the result of frequency response analysis;
acquiring a load required for applying a same displacement as the acquired maximum displacement, to the part of the automotive body;
setting a design space by setting a part or member that supports the part of the automotive body as an optimization target;
generating an optimization block model formed of three-dimensional elements in the set design space;
generating an optimization analysis model by combining the generated optimization block model to the automotive body; and
acquiring an optimal shape of the optimization block model that achieves weight reduction of the automotive body while at the same time improving dynamic stiffness of the part of the automotive body by using topology optimization in computer aided engineering (CAE) analysis for design of the automotive body by:
applying the acquired load as a load condition; and
performing topology optimization analysis for the optimization block model taking an inertial force that occurs in the part of the automotive body due to vibration into consideration by using inertia relief method.
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