Nonlinear Thermal Stress Analysis of In-ground LNG Storage Tank

LNG 지하 저장탱크 벽체의 비선형 열응력 해석

  • 곽효경 (한국과학기술원 토목공학과) ;
  • 송종영 (한국과학기술원 토목공학과) ;
  • 이광모 (한국과학기술원 토목공학과)
  • Published : 2000.04.01

Abstract

Concrete cracking due to the temperature gradient across the wall, caused by the difference in temperature between cryogenic liquid natural gas stored and surrounding environment of in-ground LNG storage tank, is investigated in this study. Crack propagation of concrete LNG tank is effectively simulated by using a layered degenerated shell element. In addition, material nonlinearity is taken into consideration on the basis of the nonlinear elastic-orthotropic model. Finally, numerical analysis for a real LNG storage tank is conducted with the objective to verify the efficiency of the introduced model.

Keywords