Example66 Joint Load

General

  • The joint load is applied around a through hole of two plates.
     

  • The joint load allows you to take into account the forces that pull each other such as axial force due to the bolted connection.
     

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

Analysis Space

Item

Setting

Analysis Space

3D

Model Unit

mm

Analysis Conditions

Item

Setting

Solver

Stress analysis [Galileo]

Analysis Type

Static analysis

Model

A hole is drilled through the two plates (plate1 and plate2) of 25mm x 25mm.

Circular faces are carved around the through hole to set the joint load boundary conditions (Joint1 and Joint2).

The boundary of the two plates is set simple contact (automatic judgment) boundary condition (EasyContact).

The symmetric boundaries (SymX and SymY) are set to the faces of symmetry of the model to make the symmetric model.

To restrict the Z displacement, the boundary condition (FixZ) which fixes Z displacement is set to the point on the symmetric face.

 

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

3/Solid

plate1

001_Al *

4/Solid

plate2

002_Polycarbonate(PC) *

* Available from the material DB

Boundary Condition

The boundary conditions are set as follows.

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Setting

Joint1/Face

Mechanical

Joint load

 

Joint2/Face

Mechanical

Joint load

 

EasyContact/Face

Mechanical

Simple contact

Automatic judgment

SymX/Face

Symmetry/Continuity

Symmetry

Select Reflective

SymY/Face

Symmetry/Continuity

Symmetry

Select Reflective

FixZ/Verted

Mechanical

Displacement

Select only Z component. Set it to 0.

 

The joint load pair of 1N is set as below.

Boundary Pair

Joint Load

Joint1-Joint2

1.0 [N]

Results

Below is the displacement diagram with color contour of Z component.


For easy viewing, the deformation is scaled up to about 26000.

The joint load caused a depression of about 25nm around the through hole of the polycarbonate plate2.

On the other hand, the area far from the hole is deformed to float up to 48nm.

 

Below is the contour diagram of the aluminum plate1 only.

Although it is smaller compared with the plate2, plate1 also shows the deformation.

It is about 2nm around the through hole.