| Budget Amount *help |
¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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| Outline of Final Research Achievements |
The stochastic finite element method (Intrusive SSFEM) is one of tools for efficiently solving models that probabilistically expresses objects whose parameters, such as structure, shape, material characteristics, boundary condition, etc., are not precisely known. In this study, the application of Intrusive SSFEM, which performs uncertainty analysis using response surface by polynomial chaos expansion, to stochastic elasto-plastic solid mechanics problem is considered. In particular, we have developed NISP-SFEM, which is a combination of Intrusive SSFEM and Non-Intrusive Spectral Projection Method(NISP method). As a result, we have found a solution to one of the major problems of nonlinear SSFEM, that it is possible to track the mean value accurately, but it is difficult to accurately track the stochastic fluctuation. Furthermore, the NISP-SFEM for plane strain and three-dimensional stochastic elastic-plastic problems with finite deformation has been developed.
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