An Algorithm of Finding Effective Distribution of Sub-elements in Overlay Model

The idea of overlaying sub-elements in the inelastic constitutive models is studied. The main objective of this study is to propose an algorithm to find the effective distribution of sub-elements in Overlay model. In the course of study, experimental cyclic inelastic responses of a ferritic stainless steel are also illustrated in a brief. Proposed algorithm of searching effective distribution of sub-elements is based on an energy method where the percent of error is calculated. Depending on the number of sub-elements and error band, optimal distribution is achieved by adjusting some variables. For validation, numerical simulation is to be done using calculated material parameters. Correlation between experimental and simulated hysteresis loop is to be found successful.