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
As the threat of explosion incidents continues to intensify, it poses a significant risk to human safety. This study proposes a variable stiffness re-entrant (VSRE) core sandwich panels with negative Poisson’s ratio to enhance the explosion protection effect. Numerical simulation methods are used to analyze the impact of explosion loads on the structure, and the model is verified using the experimental results from existing studies. The VSRE core demonstrates excellent explosion protection performance. Compared with the traditional re-entrant (RE) core of equivalent mass, in the numerical simulation, the lower plate maximum displacement (maxD) is reduced by 11.85%, while the energy absorption (EA) of the system is increased by 14.39%. The variable stiffness factor of this design enables the control of density deformation, thereby achieving adjustable energy absorption capacity. The parameter study of the system shows that through the reasonable combination of core thickness, side distance, and gradient configuration, the best performance can be achieved. Specifically, combining the VSRE core with a thicker rear plate can more effectively distribute stress and material flow, reducing the peak deformation by up to 81.11%. This structure enables more efficient material flow towards the deformation center, effectively reducing the overall deformation and improving the energy absorption capacity. Therefore, the application of this variable stiffness helical plate in explosion protection systems has great potential.
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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