Theoretical considerations, and practical experiences (Onken and RostásyĪ thermal hydration constitutive model is implemented in FLAC3D. Hydration model is based on a procedure that considers empirical rules, Implemented as constitutive models of mechanical behavior. With in thermal models, material hardening and strength development are Separation, as the hydration heat generation and heat transfer are dealt The implementation of hydration models in FLAC3D follows this Physical parts, where the thermal and mechanical parts are the most The effects of the hydration process can be separated into different Hydration process in the engineering world. The setting of concrete (which can be considered as a transitionįrom liquid to solid phase) is the most relevant example for the Water into a substance, a process by which heat is generated (hydration Hydration is defined as the chemical absorption of Temperatures can be accessed via FISH for users to define temperature-dependent properties.Thermal option provides for one-way coupling to the mechanical stressĪnd pore-pressure calculations through the thermal expansion Both explicit- and implicit-solution algorithms are available.These sources may decay exponentially with time. Sources may be inserted into the material as either point sources or
Four thermal material models are available: isotropicĬonduction, anisotropic conduction, isotropic conduction/advection, and.It can simulate temperature-dependent fluid density and thermalĪdvection in the fluid. TheĪdvection model takes the transport of heat by convection into account The conduction modelsĪllow simulation of transient heat conduction in materials, and theĭevelopment of thermally induced displacements and stresses. Incorporates both conduction and advection models. LEARN MORE about FLAC3D's dynamic modeling capabilities. Of dynamic problems in disciplines such as earthquake engineering, The dynamic option extends FLAC3D's analysis capability to a wide range Order to calculate the combined effect of thermal and dynamic loading. Theĭynamic model can likewise be coupled to the optional thermal model in Time-dependent pore pressure change associated with liquefaction. This allows, for example, analyses involving The dynamic feature can also be coupled to the Permitting analysis of soil-structure interaction brought about by
This option can be coupled to the structural element model, thus FLAC3D contains absorbing andįree-field boundary conditions to simulate the effect of an infinite User-specified acceleration, velocity, or stress waves can be inputĭirectly to the model either as an exterior boundary condition or an Permits three-dimensional, fully dynamic analysis with FLAC3D. IMASS is available as a built-in, optional constitutive model for FLAC3D(version 7.0 or later) and is sold as a separate, monthly or annual lease, license. This two-stage softening/weakening behavior in IMASS is critical to accurately represent the rock mass post-peak behavior for underground and surface mining applications. IMASS uniquely contains two softening (or residual) yield envelopes to represent the two-stage softening behavior for a rock mass that distinguishes between damage (caused by fracturing and the associated loss of cohesion and tensile strength) and the subsequent disturbance (due to bulking) in rock mass behavior. IMASS is based on empirical relationships and uses strain and zone-size dependent properties that reflect the impacts of dilation and bulking as a rock mass undergoes plastic deformation. IMASS represents the damage around an excavation, slope, or caving process by accounting for the progressive failure and disintegration of the rock mass from intact, jointed, and/or veined rock to a disaggregated, bulked material. The Itasca Constitutive Model for Advanced Strain Softening ( IMASS) has been developed to represent the rock mass response to excavation induced stress changes.