توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Rate Dependent Constitutive Model for Soft Soil Large Strain Creep with Variable Shear Modulus
نویسنده(ها): ،
اطلاعات انتشار: هفتمین کنگره ملی مهندسی عمران، سال
تعداد صفحات: ۱۰
In this paper a rate dependent viscoplastic constitutive model is presented for soft soils. This model is based on the long–term creep tests under hydro static stress conditions. In this model the viscosity considered as shear stress relaxation; therefore viscosity affects only the shear stress or strain. Mohr–Coulomb failure criterion is employed to plastic calculations. Shear modulus is considered as stress, strain and time dependent. Time dependency of the shear modulus is related to the occurred viscoplastic deformations. Numerical calculations show the applicability of the presented model for viscoplastic calculations.<\div>

۲Conceptual Constitutive Model for Structured Soils in Thermodynamical Based Disturbed State Concept
نویسنده(ها):
اطلاعات انتشار: چهارمین کنفرانس ملی زلزله و سازه، سال
تعداد صفحات: ۱۰
A conceptual constitutive model is presented for consolidation and yield of structured clays.Generalized thermodynamic principals based on the specified form of free energy and dissipative energy functions are used to derive the yield function and elasto–plastic response of the model. Free energy and dissipative energy functions are introduced by an additional term related to the work of the additional volumetric plastic strain due to the soil structure and Disturbed State Concept is employed to derive incremental response of the model which is based on thermodynamic based MMC model.<\div>
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