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변형률 속도가 고려된 발포 폴리프로필렌의 구성방정식

A Constitutive Equation Including Strain Rate Effect for the Expanded Polypropylene

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참고문헌

키워드

주제분류재료공학

초록

본 논문에서는 Kim 등[7]이 제시한 4가지의 다른 밀도를 갖는 원통형 시험편으로한 EPP(Expanded polypropylene)의 준정적(Quasi-static test) 및 충격 시험(Impact test) DB를 바탕으로 Jeong 등[12]이 제시한 폴리우레탄(Polyurethane)에 대한 구성방정식을 EPP 폼에 대하여 다시 정의 하여 충격량-운동량 이론을 접목시켜 새로운 구성방정식을 제안하기위한 DB 구축을 목표로 하였다.

Abstract

The purpose of this paper is to build DB in order to Propose new constitutive equations by redefiningconstitutive equations for Polyurethane presented by Jeong et al. [12] based on Quasi-static test and Impact test DB ofExpanded polypropylene using cylindrical specimens with 4 different densities presentsd by Kim et al. [7] for EPPfoam and combining the impulse-momentum theory.

참고문헌 (15)

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  4. Kim, M.H, "Design and StructuralAnalysis of Aluminum Bumper for Automobiles", Transactionsof KSAE, 7(3), pp.217~227 (1999)
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  6. Choi, C.H, "Expanded Polypropylene and Packaging Materials", Journal of the Monthly Packaging World, 214, pp.58~67 (1996)
  7. 김한국, "발포 EPP", EPS의 충격특성에 관한 실험적 연구, 2013, pp.26(6), 343~348[DOI]
  8. Bouuix, R, "Polypropylene FoamBehaviour Under Dynamic Loading : Strain Rate, Density andMicrostructure Effects", International Journal of Impact Engineering, 36(2), pp.329~342 (2009)
  9. Ouellet, S, "CompressiveResponse of Polymeric Foams Under Quasi-static Medium andHigh Strain Rate Conditions", Polymer Testing, 25(6), pp.731~743 (2006)
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  11. Huh, H, "Dynamic TensileCharacteristics of TRIP-type and DP-type Steel Sheets for andAuto-body", International Journal of Mechanical Sciences, 50, pp.918~931 (2008)
  12. 정광영, "A constitutive model for polyurethane foam with strain rate sensitivity", Journal of Mechanical Science and Technology, 26(7), pp.2033~2038 (2012), 대한기계학회
  13. Jeong, K.Y, "A Constitutive Equationfor Expanded Polypropylene Foam under Dynamic Loading", Proceeding of The Korean Society for Composite Materials, 2013, pp.149~150
  14. Kim, B.J, "A Study on theAbsorbed Energy of Polymer material of Vehicles betweenMass and Strain Rate Effect Velocity Value based on ConstantEnergy", Proceeding of the Korean Society for Composite Materials, pp.43~44 (2013)
  15. Munshi, M.B, "Crashworthybehaviour of Rigid Polyurethane Foam under ConstantImpact Energy", Proceeding of the 2007 Lecture and PaperAbstracts, pp.1776~1780 (2007)

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