Example17 Deformed Meshes

General

• The impedance change due to thermal load is solved with deformed meshes.

• This exercise is based on Exercise 9: Thickness Shear Mode.

• Copy the analysis model of Exercise 9 into the project and name it “Static”. Change the analysis condition to Thermal load and obtain the deformed meshes.

• Copy the analysis model of Exercise 9 into to project again and name it “Deformed mesh”. This analysis model is solved with the obtained deformed meshes. Analyze the impedance.

Preparation

Open Project “ray_ex09.femprj > Project tree pane > right click on “ray_ex09” > Copy into Project > name it “Static”. Go to Project tree pane again > right click on “ray_ex09” > Copy into Project > name it “Deformed mesh”. There will be 3 analysis models in total.

Analysis Conditions of “Static”

Analysis Conditions of “Deformed mesh”

Graphical Objects

The same as Exercise 9: Thickness Shear Mode

Body Attributes and Materials

The same as Exercise 9: Thickness Shear Mode except that Coefficient of Expansion is used.

Boundary Condition

The same as Exercise 9: Thickness Shear Mode

Procedure

1) Analysis model “ray_ex09” > Run Mesher/Solver > Save Project. This is for later comparison.

2) Analysis model “Static” > Run Mesher/Solver > Save Project

3) Analysis model “Deformed mesh” > Run Solver with Existing Meshes > Dialog box “Open”

> Folder “ray_ex17.Results” > Select “Static.(Deformed mesh).pdt

> Press the Open button to run the solver > Save Project

Results

The resonant frequency shifts due to the thermal load.

1) Results window > Chart > SYX Matrix > Descartes window will appear with the frequency plot of impedance

2) Descartes menu > Insert > Add Dataset to All Graphs > Folder “ray_ex17.Results” > Select “ray_09.s1p”

The resulting plots are shown below. The shift of resonant frequency due to the thermal expansion is observed.