탄성지반상에 놓인 철근콘크리트 축대칭 쉘의 정적 및 동적 해석 (III) -비선형 정적거동을 중심으로-

Static and Dynamic Analysis of Reinforced Concrete Axisymmetric Shell on the Elastic Foundation -With Application to an Static Behavior Analysis of Axisymmetric Shell-

  • 발행 : 1997.06.01

초록

In all inelastic deformations time rate effects are always present to some degree. Whether or not their exclusion has a significant influence on the prediction of the material behaviour depends upon several factors. In the study of structural components under static loading conditions at normal temperature it is accepted that time rate effects are generally not important. However metals, especially under high temperatures, exhibit simultaneously the phenomena of creep and viscoplasticity. In this study, elastoplastic and elasto-viscoplastic models include nonlinear geometrical effects were developed and several numerical examples are also included to verify the computer programming work developed here in this work. Comparisons of the calculated results, for the elasto-viscoplastic analysis of an internally pressurised thick cylinder under plane strain condition, have shown that the model yields excellent results. The results obtained from the numerical examples for an elasto-viscoplastic analysis of the Nuclear Reinforced Concrete Containment Structure(NRCCS) subjected to an incrementally applied internal pressure were summarized as follows : 1. The steady state hoop stress distribution along the shell layer of dome and dome wall junction part of NRCCS were linearly behave and the stress in interior surfaces was larger than that in exterior. 2.However in the upper part of the wall of NRCCS the steady state hoop stress in creased linearly from its inner to outer surfaces, being the exact reverse to the previous case of dome/dome-wall junction part. 3.At the lower part of wall of NRCCS, the linear change of steady state hoop stress along its wall layer began to disturb above a certain level of load increase.

키워드

참고문헌

  1. Computers and Structures v.6 Elasto-Plastic large deformation static and dynamic analysis Bathe,K.J.;Ozdemir,H.
  2. Fluidity and Plasticity Bingham,E.C.
  3. computers and structures v.9 Evaluation of solution schemes for nonlinear structures D.P.Mondkar;G.H.Powell
  4. Finite elements in plasticity D.R.J.Owen;E.Hinton
  5. Nuclear Engineering and Design v.69 Research Needs for Design of Concrete Containment Structures Geogely,P.;White,N.
  6. Int. J. Num. Meth. Engng. v.12 The viscoplastic approach to problems of elasticity and creep involving geometric nonlinear effects Kanchi,M.B.;Zienkiewicz,O.C.;Owen,D.R.J.
  7. Computers and structures v.4 Elastio-plastic dynamic analysis of axisymmetric solid Nagarajan,S.;Popov,E.P.
  8. The finite element method(3/e) O.C.Zienkiewicz
  9. Nuclear Engineering and Design v.120 Experimental Study of the Structural Behavior of the Reinforced Concrete Containment Vessel beyond Design Pressure Oyamada,O.(et al.)
  10. Int. J. Solids structures v.20 no.8 Dynamic buckling of Visco-plastic spherical shell R.Bukowski;W.Wojewodzki
  11. Int. J. Num. Meth. Engng. no.8 Viscoplasticity-plasticity and creep in elastic solids-a unified numerical solution approach Zienkiewicz,O.C.;Cormeau,I.C.
  12. Nuclear Eng. and Design v.28 Analysis of viscoplastic effects in pressure vessels by the finite element method Zienkiewicz,O.C.;Owen,D.R.J.;Cormeau,I.C.
  13. 소성 · 점탄성 山田嘉昭
  14. 대한토목학회논문집 no.13 시간의존 비탄성 문제의 유한요소-경계요소 조합에 의한 해석 김문겸외
  15. 대한토목학회지 v.14 no.3 온도 및 내압을 받는 원자로 철근콘크리트 격납구조물의 비선형해석 오병환;이명규
  16. 한국농공학회지 지반과 구조물사이의 상호작용을 고려한 농업용 사이로의 해석에 관한 연구(Ⅰ-Ⅳ) 조진구;조현영
  17. 한국농공학회지 v.38 no.3 탄성지반상에 놓인 철근 콘크리트 축대칭 쉘의 정적 및 동적 해석(1) 조진구
  18. 한국농공학회지 v.38 no.5 탄성지반상에 놓인 철근 콘크리트 축대칭 쉘의 정적 및 동적 해석(2) 조진구
  19. 한국농공학회지 v.37 no.2 철근 콘크리트 축대칭 구조물 해석 모형의 개발 조진구
  20. 한국전산구조공학 v.2 no.2 석유비축을 위한 지하저장 공동의 탄 정소성 동적해석 진치섭;김수석