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http://dx.doi.org/10.7234/kscm.2011.24.3.031

Computational analysis of sandwich shield with free boundary inserted fabric at hypervelocity impact  

Moon, Jin-Bum (한국과학기술원 기계공학과 항공우주공학 대학원)
Park, Yu-Rim (한국과학기술원 기계공학과 항공우주공학 대학원)
Son, Gil-Sang (한국과학기술원 기계공학과 항공우주공학 대학원)
Kim, Chun-Gon (한국과학기술원 기계공학과 항공우주공학)
Publication Information
Composites Research / v.24, no.3, 2011 , pp. 31-38 More about this Journal
Abstract
In this paper, a novel hybrid composite shield to protect space structures from hypervelocity impact of micrometeoroid and space debris is proposed. The finite element model of the proposed shield was constructed and finite element analysis was conducted to approximate the energy absorption rate. Before the final model analysis, analysis of each component including the aluminum plate, PMMA plate, and intermediate layer of fabric was performed, verifying the finite element model of each component. The material properties used in the analyses were predicted material property values for high strain rates. The analysis results showed that, other than the fabric, the energy absorption rate of each component was in agreement. Afterwards, the finite element model of the hybrid composite shield was constructed, where it was analyzed for the restrained and unrestrained fabric boundary condition cases. Through the finite element analysis, the fiber pullout mechanism was realized for the hybrid shield with free boundary inserted fabric, and it was observed that this mechanism led to energy absorption increase.
Keywords
hybrid composite shield; hypervelocity impact; unrestrained fabric; FE analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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