Thermo Mechanics

CASoft solves transient thermal problems in Solid bodies using the Algorithm CAT.
When requested, the temperatures are turned step-by-step into thermal strains using the Algorithms CATM. The equations here are of parabolic type.

CASoft addresses very high Temperatures, where the solver must account for a number of severe nonlinearities:
Temperature-dependent material properties;
Temperature-dependent Boundary Conditions;
State transition : solid-liquid;
Mobile heat source.

Thus CASoft covers the full range of Thermo-Mechanical analyses:
Problem: Parabolic
Equations: Thermal, Mechanical
Geometry: solid 3D
Analysis: transient
Material: linear, nonlinear
State: solid, liquid
Source: steady, transient, mobile
Boundary C: temperature, flux, convection linear, nonlinear
Fields: single, coupled
The grid of the model is generated with the Fractal Modeler.
Solution efficiency : models sized 1e5 cells run within 1min of CPU time; With such speed, steady-state thermal problems are run as long time transients.

All the graphic rendering options are available for Thermo-Mechanics:
-Temperature/displacement maps are painted over user-selected tomographic planes; they are rendered online with the solution;
-Flux/Stress maps are painted over user-defined Output Entities; they are rendered after the run, in the form of step-by-step time histories.

For nonlinear problems, some additional data are entered via external files for:
the variation w.r.t. Temperature of the thermal/mechanical properties of the material;
the variation w.r.t. time of inflowing Boundary Conditions: Flux,Temperature;
the variation w.r.t. Temperature of outflowing Boundary Conditions: Convection Coefficients.
Most of the above files are independent of a single case, and are reusable for more cases.



Fig. 4 – Model of the Thermal transient problem WAM2.
The model has 11,648 cells and runs 488 nonlinear steps in 67 sec.