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하원필(W.P.Ha),신현우(H.W.Shin) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
In this study, structural optimization of chassis frame is performed to reduce the weight and increase static stiffness and improve modal characteristics. In order to select the design variables to be modified, design sensitivity analysis is adopted. Dominant parameters to the static and modal response were found. Modifying these dominant parameters, wo could meet the design target efficiently.<br/>
Explicit code를 이용한 Lower control arm의 스탬핑 해석
하원필(W. P. Ha),임세영(S. Y. Im) 한국자동차공학회 1994 한국 자동차공학회논문집 Vol.2 No.4
To examine the residual stress field resulting from stamping process for the lower control arm of a car, the explicit finite element analysis is performed for the stamping process by way of the ABAQUS Explicit. The residual stress is obtained in terms of the Van Mises stress and other parameters such as equivalent plastic strain, the change of blank thickness, the final configuration of the blank and the spring back effect are also considered. Moreover, discussed is the convergence of the explicit FEM versus the punch speed and the element discretization<br/>