不確かさを有する超細密プレートフィン構造体のクリープ挙動に対するSLSモンテカルロシミュレーション

抄録

In this study, the creep behavior of ultrafine plate-fin structures which possess uncertainty factors in material properties of a base metal and shapes are investigated using the Monte Carlo simulation. For this, a time-dependent homogenization theory is applied to the analysis of creep behavior of ultrafine plate-fin structures. Moreover, Stepwise Limited Sampling (SLS) is introduced into the Monte Carlo simulation to reduce computational costs. Then, using the present analysis method, the effects of uncertainty factors on the creep behavior of ultrafine plate-fin structures subjected to a macroscopic constant stress at high temperature are investigated. This enables us to obtain tail probability values of creep strain by one tenth of computational costs compared to the conventional Monte Carlo simulation.