مشخصات پژوهش

عنوان	Kinematic hardening based coupled elastoplastic–viscoplastic model for describing time-dependent behavior of soils subjected to non-monotonic loadings
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Soil Rate effect Elastoplastic–viscoplastic model Kinematic hardening Creep Relaxation Non-monotonic loading
چکیده	Rate-dependent behavior prediction of soils under non-monotonic complex loading paths necessitates considering more elaborated mathematical formulations. In this study, an existing elastoplastic-viscoplastic constitutive model has been upgraded based on recent experimental observations. The two mechanisms of elastoplastic and viscoplastic were coupled based on their kinematic hardening rules. Then, the developed model was implemented in ABAQUS code, via UMAT and VUMAT subroutines and validated based on experimental results obtained from laboratory tests. The results of validation indicate a good capacity of the model in describing diverse time-depending aspects such as creep, relaxation, and rate effects during applying complex loading paths
پژوهشگران	سیدمحمدهاشم بطهاییان (نفر اول)، محمد ملکی (نفر دوم)