Page 335 - Finite Element Modeling and Simulations with ANSYS Workbench

320 Finite Element Modeling and Simulation with ANSYS Workbench

Step 2: Add Material Properties
Double-click on Engineering Data of Steady-State Thermal. Add a Density
3
of 2800 kg/m , change the Unit to ‘JKg^-1K^-1’ and enter Specific Heat of
870 J/ (kg ⋅ K) to the Properties of Aluminum. Close the A2,B2:Engineering
Data interface.

Step 3: Set Up Transient Thermal Analysis
Double-click on the Setup cell of the Transient Thermal system to launch the
Multiple Systems–Mechanical program. Click Yes on the pop-up window to
read the modified upstream data.

Select Analysis Settings from the Project Outline. In the Details of “Analysis
Settings”, under Step Controls, set the Step End Time to 180s. Change the
Auto Time Stepping to On from Program Controlled. Change Defined By to
Time. The default values for the initial and the maximum time steps are small
for this model. Set the Initial Time Step to 0.1. Set the Minimum Time Step to
0.05. Set the Maximum Time Step to 5. A small time step will help increase the
accuracy of the model and also produce enough result steps so the animation
will have smooth transition between solution steps.