접착제로 접합된 경사진 이중외팔보의 충돌에 대한 시뮬레이션 해석 및 검증
Simulation Analysis and Verification on Impact of Tapered Double Cantilever Beam Bonded with Adhesive
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초록
Tapered double cantilever beam (TDCB) specimens are the most commonly used test configurations to measure the fracture toughness of composites and adhesive joints. The material used in this study is aluminum alloy. For the impact analysis, load and displacement applied from pin onto end block as well as the crack energy release rate are calculated and compared with the finite element analysis results. The energy release rate increases with the velocity increases. As TDCB model with the same condition as experiment is simulated and analyzed, the fracture behavior can be estimated with the analysis result similar to experiment. The simulation results can be agreed with experimental graph and all experimental data at this study can be verified. These experimental results can be applied into real field effectively. It is found that the energy release rates measured from impact tests on the specimens can be predicted by the finite element model suggested in this study.
Abstract
Tapered double cantilever beam (TDCB) specimens are the most commonly used test configurations to measure the fracture toughness of composites and adhesive joints. The material used in this study is aluminum alloy. For the impact analysis, load and displacement applied from pin onto end block as well as the crack energy release rate are calculated and compared with the finite element analysis results. The energy release rate increases with the velocity increases. As TDCB model with the same condition as experiment is simulated and analyzed, the fracture behavior can be estimated with the analysis result similar to experiment. The simulation results can be agreed with experimental graph and all experimental data at this study can be verified. These experimental results can be applied into real field effectively. It is found that the energy release rates measured from impact tests on the specimens can be predicted by the finite element model suggested in this study.
참고문헌 (7)
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- B. R. K. Blackman, "The Calculation of Adhesive Fracture Energies in Mode I: Revisiting the Tapered Double Cantilever Beam (TDCB) Test", Engineering Fracture Mechanics, 70(2), pp.233~248 (2003)
- T. W. Kim, "Density and Geometric Characteristic of Aluminum Foam for Shock Absorption Performance", Transactions of the Korean Society Mechanical Engineers, 11(14), pp.11~14 (2007)
- 신광복, "전체 적층판 접근법을 이용한 섬유강화 적층 복합재 차체 구조물의 파손평가 연구", Composites Research, 17(1), pp.18~28 (2004), 한국복합재료학회
- M. M. Abdel Wahab, "Finite Element Prediction of Fatigue Crack Propagation Lifetime in Composite Bonded Joints", Composites Part A, Applied Science and Manufacturing, 35(2), pp.213~222 (2004)
- 최해규, "알루미늄 폼으로 된 DCB 모델의 피로해석에 관한 연구", 한국기계기술학회지, 14(6), pp.39~43 (2012), 한국기계기술학회
- 양현수, "CF", Epoxy 복합재 적층쉘의 항공기 부재 충격특성에 관한 연구, 2012, pp.14(6), 17~24[DOI]