Numerical Simulation of Colliding Behaviors of Ice Sheet Considering the Viscous Material Properties

J. Ocean Eng. Technol. 1993;7(2):162-172.

점성변형 특성을 고려한 빙판의 충돌거동에 대한 수치해석

노인식,신병천

한국기계연구원 구조연구실,한국기계연구원 구조연구실

Keywords: Arctic engineering, Ice load, Visco-plastic analysis, Dashpot element, Finite element analysis, Incremental formulation, Overlay model

핵심용어: 극지공학, 방하중, 점소성 해석, 대쉬폿 요소, 유한요소 해석, 증분형 정식화, 적층판 모델

Abstract

In the present paper, the overall state of the arts of ice mechanics which is the most typical research topic of the artic engineering field was studied. And also, ice loads genrated by ice-structure interaction were estimated using numerical approach. The effects of viscous property of ice sheets to the ice load were investigated. The time dependent deformation behaviors of ice was modeled by visco-plastic problem using the finite element formalism. Constitutive model representing the material properties of ice was idealized by comblned rheological model with Maxwell and Voigt models. Numerical calculations for the bending and crushing behavior of ice sheet which are the most typical interaction modes between ice sheets and structures were carried out. The time dependent viscous behaviors of ice sheets interaction forces acting on structures were analyzed and the results were studied in detail.