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- W907790889 abstract "This study proposes nonlinear analysis procedures that can predict the ultimate pressure capacity of prestressed concrete containment structure under severe accident loading condition; temperature and pressure. The analyses are performed for containment structure of the nuclear power plant which is now under development, by using two different methods: nonlinear finite element analysis method with ABAQUS program, and numerical analysis method utilizing Mathcad program. For the nonlinear finite element analysis, the containment structure is idealized as an axisymmetric model with axisymmetric solid and shell elements. Both geometric nonlinearity and material nonlinearity including thermal effects are considered in the analyses. Because Mohr-Coulomb failure thermal effects are considered in the analyses. Because Mohr-Coulomb failure surface with corner on hexagon can cause many difficulties and complications in obtaining numerical solutions. Menetrey-Willam criterion with nonassociated flow potential is adopted for this study. In the numerical analysis, all possible containment failure modes are considered. The ultimate pressure capacity is determined by stress and strain limitation. Based upon the results of analysis due to two methods, the temperature directly affects the behavior of liner steel, but on the other hand it shows small effects on the ultimate pressure capacity. Because the applied concrete failure criterion is shown to ensure a satisfied convergence of the numerical solutions in nonlinear finite element analysis, this criterion may be used in the case of severe nonlinear analysis. The numerical method may also be used as an technique for the ultimate pressure capacity analysis required at primary design step since it is far faster than finite element method in solution time." @default.
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- W907790889 date "1999-01-01" @default.
- W907790889 modified "2023-09-23" @default.
- W907790889 title "Nonlinear Ultimate Pressure Capacity Analysis of Prestressed Concrete Containment Considering Temperature Effects" @default.
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