Home / Examples / Stress Analysis [Galileo] / Example 4: Cantilever under Gravity

Example 4: Cantilever under Gravity

General

• The deformation of a cantilever under gravity is analyzed.
   

• The distributions of displacement and stress are solved.
   

• Unless specified in the list below, the default conditions will be applied.
   

• Obtain this session's project file. (Right-click and choose 'Save link as')




• Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item	Settings
Analysis Space	3D
Model Unit	m

 

Analysis Conditions

Select "Acceleration" at Options.

Item	Settings
Solver	Stress Analysis [Galileo]
Analysis Type	Static Analysis
Options	Select [Acceleration].

 

Set the Acceleration tab as follows.

Tab	Setting Item	Settings
Acceleration	Acceleration	X=Y=0.0, Z=-9.8 [m/s2]

Model

The bar is a rectangular solid body. The material is polycarbonate.

On the Mechanical tab in the boundary condition dialog box, set the zero displacement on the fixed face.
Acceleration is taken care of in the Acceleration tab of Analysis Condition Setting.

 

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
0/Solid	BEAM	002_Polycarbonate(PC) *

* Available from the material DB

Boundary Conditions

Boundary Condition Name/Topology	Tab	Boundary Condition Type	Settings
FIX/Face	Mechanical	Displacement	Select all X/Y/Z components. UX=0, UY=0, UZ=0

Results

The contour diagram shows the Z displacement.

The displacement is bigger towards the tip of the bar. At the tip of the bar, the Z displacement is about 49 um.

 

The vectors of the stress are shown below.

The upper part of the fixed end is getting the tensile stress, whereas the lower part is getting the compressive stress.

 

The external force and reactive force are listed in the table below.

 

 

The reactive force at FIX is 117.6[N] in +Z direction.