A Steady State Thermal model calculates the final temperature distribution in a mechanical structure based on the boundary conditions by computing a thermal equilibrium. The solution is independent of initial conditions.
Transient Thermal computes how the temperature changes over time from the initial conditions. If the boundary conditions are constant, the temperature distribution will eventually become the steady state solution if the end time in the simulation is large enough.
Static Structural computes the final equilibrium displacement of a structure given boundary conditions of loads and supports.
Transient Structural computes how the displacement of the structure changes over time from the initial conditions and includes inertia forces and damping forces.
ANSYS can do a coupled thermo-mechanical analysis.