인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
An investigation has been performed to study the response of the front bumper beam of an automobile. The primary concern of the investigation is to present a procedure of how to design the cross-sectional shape of the front bumper of an automobile. In the investigation, a beam theory is used to model the front bumper, and a principle of energy conservation is also used for calculating the deflection and stress distribution of the bumper subjected to the external impact. The model of the bumper consist of the straight beam on the elastic foundation to consider the polyurethane attached to the bumper, and the curved beam with a constant radius of curvature supported by the bracket. Using the finite element method, the behavior of the modeled beam is compared with that of the shell structures to which 3 dimensional brick elements representing the polyurethane are attached. After the verification of the modeled beam, the deformation and the stresses of the bumper are calculated when the automobile equipped with the bumper is subjected to the front impact. For the calculation, the initial kinetic energy of the impacting body is assumed to be transformed into the elastic deformation energy of the bumper and the reduced kinetic energy of the whole system. The energy method is compared with the impact analysis using the finite element method. Finally, the design analysis using the modeled bumper beam and the energy method is performed to design the optimal cross-sectional shape of the bumper minimizing the total weight with the constraint conditions that no plastic deformation occurs in the bumper. Using the presented procedure, a designer can choose easily and quickly the optimal cross-sectional shape of the bumper for an automobile with the given specifications.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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UCI(KEPA) : I410-ECN-0101-2009-556-013987264
