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[구조강도부문] 충돌사고 재구성을 위한 차체 변형형상의 수치 모델 개발
장인식(In-Sik Jang),채덕병(Duck-byoung Chae) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The deformation pattern is one of the major factors to resume the crash configuration in collision accident reconstruction. Crash analysis are carried out using finite element method and deformed shapes are enumerated for different crash conditions. Linear equation representing force-deformation relationship is derived and deformation energy is calculated. This energy can be utilized as one of indices to identify the type of the collision accident result. Crash analysis between two vehicles is accomplished with three crash angles and three velocities for each angle condition. The deformations are measured for six selected points and numerical models are obtained for two dimensional deformation patterns by least square curve fitting. Quadratic and cubic polynomials are used as trial functions, and the fitted curves approximate deformation shapes with reasonable errors.