Uniform and Spatially Varying Prescribed Temperatures (All Simulation Types)For any simulation, you can define prescribed temperatures that are either uniform throughout your model or vary in space. In all simulations other than sequential thermal-stress simulations, these temperature values are constant as the simulation progresses. Prescribed Temperatures from a Thermal Step (Sequential Thermal-Stress Simulations Only)A sequential thermal-stress analysis consists of a heat transfer analysis (steady-state heat transfer or transient heat transfer steps) followed by an uncoupled stress/deformation analysis (static steps). The Abaqus solvers calculate the temperature of the model during the heat transfer analysis. The temperatures, which vary with position and are usually time dependent, are read into the stress/deformation analysis as an initial condition and are not changed by the stress/deformation analysis. In some cases, the total time of the static step is the same as the total time of the heat transfer step. In this case, the Abaqus solvers map the temperature from an increment of the heat transfer step to an increment of the static step, using interpolation if necessary. However, if the total time of the static step is different from the total time of the heat transfer step, the Abaqus solvers first scale the time scale of the heat transfer step to match the total time of the static step and then perform the mapping and interpolation between increments. By default, the stress step does not include temperature output. To determine how the Abaqus solvers are varying the temperature during the stress step, you must create an output request that includes temperature. The thermal case and the structural case can use different finite element representations of the model. If the Abaqus solvers need to interpolate the temperature between the heat transfer analysis and the stress/deformation analysis because of dissimilar meshes, you can specify the tolerances that will be applied to the interpolation. If you specify both tolerances, the tighter tolerance is applied. | ||||||