Abstract
In this study, the elastic-viscoplastic properties of ultrafine plate-fin structures which possess uncertainty factors in material properties of a base material are investigated using the Monte Carlo simulation. For this, a time-dependent homogenization theory is applied to the analysis of the elastic-viscoplastic properties of ultrafine plate-fin structures. Moreover, the Monte Carlo simulation with the Stepwise Limited Sampling (SLS) is used to take into account uncertainty factors in material properties. Then, using the present analysis method, the effects of uncertainty factors of material properties on the elastic-viscoplastic behavior of ultrafine plate-fin structures under uniaxial tension at high temperature are investigated. From this analysis, we can obtain the macroscopic and microscopic tail probability values by one tenth of computational time compared to the conventional Monte Carlo simulation.
