Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
권호 표지
DOI QR코드

DOI QR Code

Dynamic Characteristics of Composite Support Structures with Different Car Crash Speeds

다양한 차량 충돌속도에 따른 복합재료 지주구조의 동적 거동 특성

  • Lee, Sang-Youl (Department of Civil Engineering, Andong National University)
  • Received : 2015.04.21
  • Accepted : 2015.04.25
  • Published : 2015.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study dealt with dynamic characteristics by real car crash simulation of composite support structures for road facilities. The effects of different material properties of composites for various car crash speeds are studied using the LS-DYNA finite element program for this study. In this study, the existing finite element analysis of steel support structures using the LS-DYNA program is further extended to study dynamic behaviors of the support structures made of various composite materials. Based on the passenger safety assessment, the numerical results for various parameters are verified by comparing different models with internal energy occurred in the support and car.

본 연구는 도로시설물에 적용될 수 있는 복합재료 지주구조에 대하여 실차 차량 충돌 시뮬레이션을 통한 동적 특성을 다룬다. 다양한 차량 충돌 속도에 대한 서로 다른 복합재료 물성의 영향을 LS-DYNA 유한요소 프로그램을 사용하여 분석하였다. 본 연구에서는 LS-DYNA 프로그램을 적용하여 기존의 강재 지주구조에 대한 유한 요소해석을 다양한 복합재료로 구성된 지주구조로 확장하여 적용하였다. 탑승자 안전성 평가를 기반으로 다양한 매개변수에 대한 수치해석 결과는 지주와 차량에서 발생하는 내부에너지를 비교 분석하여 규명하였다.

Keywords

References

  1. Arens, S.W., Sicking, D.L., Faller, R.K., Reid, J.D., Bielenberg, R.W., Rohde, J.R., and Lechtenberg K.A., Investigating the Use of a New Universal Breakaway Steel Post. MwRSF Research Report TRP-03-218-09. Midwest Roadside Safety Facility, University of Nebraska-Lincoln, 2009.
  2. Cowper, G., and Symonds, P., Strain Hardening and Strain Rate Effects in the Loading of Cantilever Beams, Brown Univ. Applied Mathematics Report, Report No. 28, 1957.
  3. Hallquist, J.O., LS-DYNA Theoretical Manual, Livermore Software Technology Corporation, Livermore, CA, 2001.
  4. Jones, R.M. Mechanics of Composite Materials (2nd ed.), Taylor & Framcis Inc., New York, 1999.
  5. Johnson, G.R., and Cook, W.H., "Fracture Characteristics of Three Metals Subjected to Various Strain, Strain Rates Temperatures and Pressures", Engineering Fracture Mechanics, Vol. 21, No. 1, 1985, pp. 31-48. https://doi.org/10.1016/0013-7944(85)90052-9
  6. Kim, K.D., Ko, M.G., Kim, D.S., Joo, J.W., and Jang, D.Y., "Design of High-Performance Longitudinal Flexible Barrier Using Vehicle Velocity-time History", Journal of KOSHAM, Vol. 12, No. 3, 2012, pp. 157-167.
  7. Lee, S.Y., and Chang S.Y., "Dynamic Instability of Delaminated Composite Structures with Various Geometrical Shapes," Journal of Korean Society for Advanced Composite Structures, Vol. 1, No. 1, 2010, pp. 1-8.
  8. Ministry of Land, Infrastructure and Transport, Specification for Road Signal, 2006.
  9. NCAC Public Finite Element Model Archive, FHWA/NHTSA National Crash Analysis Center website page(www.ncac.gwu.edu), Washington, D.C, 2000.