Strength Analysis of Weld Joints using ANSYS Workbench

  • Objectives: To perform Strength Analysis on Weld Joint with different materials.

 

  • Geometrical Design:

We have 3D Geometry of Plates and Ribs joined with Welds, here is the geometry view.

 

 

  • Material Properties:

Total 4 different kinds of materials are used for this analysis, named as Stainless Steel, Aluminum Alloy, Cast Bronze and Copper Alloy, these 4 materials having different properties, have a look at those properties.

 

  • Problem Statement:

Two plates and two ribs joined with welding joints. Four Holes of vertical plate kept fixed and downward force applied to a square hole in horizontal plate. We will look for Directional Deformation, Stress and Strain in this project.

 

  • Mesh Criterion:

Type of Element: Automatic Method (Mixed Elements, Tet & Hex)

Size of Element: 17 mm

Mesh Refinement: 5.5 mm (Body Sizing, Two Plates)

This is how assembly looks like after Meshing;

 

 

  • Boundary Conditions:

Total 5 Frictional Contacts applied at various contact surfaces, Weld Bead kept as bonded. Co-Efficient of Friction taken as 0.20 for frictional contacts. We will consider various outputs based on analysis results such as Directional Deformation, Equivalent Elastic Strain, Equivalent Stress & Safety Factor.

 

This is how the model looks like when contacts applied to it;

1) Frictional:

 

2) Bonded:

 

  • Loading and Analysis Settings:

Total four holes which are kept as fixed in Vertical plate & There is a square hole at Horizontal Plate which is applied force of 15000 N in downward direction, for analysis point of view Large Deflection is kept ON.

 

Assembly view after all constraints;

 

  • Post Processing:

 

After analyzing the project we will look after some results as written above, we are having 3 different cases for this solution, as material changes in each cases.

 

Case: 1

Material for Plates: Stainless Steel

Material for Ribs: Stainless Steel

Material for Weld Beads: Stainless Steel

 

Directional Deformation

Equivalent Elastic Strain

Equivalent Stress

Equivalent Elastic Strain (Ribs)

Equivalent Stress (Weld Joints)

Safety Factor

 

 

 

Case: 2

Material for Plates: Stainless Steel

Material for Ribs: Stainless Steel

Material for Weld Beads: Aluminum Alloy

 

Directional Deformation

Equivalent Elastic Strain

Equivalent Stress

Equivalent Elastic Strain (Ribs)

Equivalent Stress (Weld Joints)

Safety Factor

 

 

Case: 3 (Brazing)

Material for Plates: Stainless Steel

Material for Ribs: Copper Alloy

Material for Weld Beads: Cast Bronze

 

Directional Deformation

Equivalent Elastic Strain

Equivalent Stress

Equivalent Elastic Strain (Ribs)

Equivalent Stress (Weld Joints)

Safety Factor

 

Post Process Results Summary;

 

  • Results & Conclusion:

1) Total Deformation is higher in Case 3 with value of 0.4688.

2) Equivalent Elastic Strain is Higher in Case 2.

3) Equivalent Stress is higher in Case 3.

4) For only weld joint the value of stress is higher in Case 3.

 

This is how the project analysed with different materials with same loading conditions. At the end we got some best results of each materials.


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