횡충돌 하중을 받는 비보강 강판의 구조거동에 대한 크기 효과
Scale Effects on the Structural Behavior of Steel Unstiffened Plates Subjected to Lateral Collisions
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초록
The scale effects on the permanent deformations and fractures of structures subjected to impact loadings have been aware by structural engineers for a long time. Experimental investigations have been performed with various structures to demonstrate the effects, but very few are directly related with marine structural elements. Furthermore, the causes of the scale effects have not clearly been answered yet. In this study, to quantify the scale effects on the permanent deflections, lateral collision tests were performed on steel unstiffened plates and the numerical analyses of the tested models were also conducted using a commercial package, Abaqus. After the substantiation of the numerical tool using the test results, a parametric study was carried out considering and neglecting the strain-rate hardening. Based upon the parametric study results, it may be concluded that the main cause of the scale effects on the permanent deflections of steel unstiffened plates subjected to lateral collision loads is the strain-rate effects.
Abstract
The scale effects on the permanent deformations and fractures of structures subjected to impact loadings have been aware by structural engineers for a long time. Experimental investigations have been performed with various structures to demonstrate the effects, but very few are directly related with marine structural elements. Furthermore, the causes of the scale effects have not clearly been answered yet. In this study, to quantify the scale effects on the permanent deflections, lateral collision tests were performed on steel unstiffened plates and the numerical analyses of the tested models were also conducted using a commercial package, Abaqus. After the substantiation of the numerical tool using the test results, a parametric study was carried out considering and neglecting the strain-rate hardening. Based upon the parametric study results, it may be concluded that the main cause of the scale effects on the permanent deflections of steel unstiffened plates subjected to lateral collision loads is the strain-rate effects.
참고문헌 (19)
- ABAQUS, "User's Manual, 6.10", Simulia, ~ (2010)
- Booth, E., "Structural Crashworthiness", pp.136~174 (1983), Butterworths
- Cho, S-R., "Material properties of steel structures under impact loadings", Bulletin of the Society of Naval Architects of Korea, 51(3), pp.13~18 (2014)
- Choung, J., "On the fracture criteria of steels for marine structures subjected to impact loadings", Ph.D., pp.2008
- 정준모, "미시역학 소성모델을 이용한 충격하중을 받는 보강판의 파단 예측", 대한조선학회 논문집, 46(6), pp.611~621 (2009), 대한조선학회
- 정준모, "조선 해양 구조물용 강재의 소성 및 파단 특성 I: 변형률 경화 및 변형률 속도 경화의 이론적 배경", 한국해양공학회지, 25(2), pp.134~144 (2011), 한국해양공학회
- 정준모, "조선 해양 구조물용 강재의 소성 및 파단 특성 II: 파단의 이론적 배경", 한국해양공학회지, 25(2), pp.92~100 (2011), 한국해양공학회
- Strain hardening and strain rate effect in the loading of cantilever beams, "Cowper, G.", Division of Applied Mathematics, ~, pp.Report No. 28 (1957)
- Jiang, P., "Experimental investigation into scaling laws for conical shells struck by projectiles", International Journal of Impact Engineering, 32(8), pp.1284~1298 (2006)[DOI]
- Jones, N., "Structural impact" (2012), Cambridge University Press
- "KS B 0801, Test pieces for tensile test for metallic materials", ~ (1998)
- 민덕기, "횡충격하중을 받는 빙해선박 구조물의 파단에 관한 연구", 대한조선학회 논문집, 49(4), pp.281~286 (2012), 대한조선학회[DOI]
- 노명현, "쇄빙선 강재의 내충격 특성에 관한 실험적 연구: 제1부 강재 특성", 한국해양공학회지, 30(4), pp.268~276 (2016), 한국해양공학회
- 노명현, "쇄빙선의 내충격 특성에 관한 실험적 연구: 제2부 선체 구조의 충격 굽힘 특성", 한국해양공학회지, 30(4), pp.277~286 (2016), 한국해양공학회
- Paik, J.K., "Scaling and dynamic effects on the plate cutting response", Journal of the Society of Naval Architecture of Korea, 33(3), pp.48~55 (1996)
- Schleyer, G.K., "Scaling of pulse loaded mild steel plates with different edge restraint", International Journal of Mechanical Sciences, 46, pp.1267~1287 (2004)[DOI]
- Shen, W.Q., "An experimental study on the scaling of plate cutting", International Journal of Impact Engineering, 21(8), pp.645~662 (1998)[DOI]
- 송용선, "Application of Field test to the Rate-dependent relation in Constitutive model", 한국산학기술학회논문지, 9(2), pp.470~474 (2008), 한국산학기술학회
- Wen, H-M., "Experimental investigation of the scaling laws for metal plates struck by large masses, study on the scaling of plate cutting", International Journal of Impact Engineering, 13(3), pp.485~505 (1993)[DOI]