Project Overview
In this example, the multi-pass welding process of a plate is simulated using the DFLUX subroutine in Abaqus.
The simulation includes two welding passes. The first welding pass is initially performed, followed by a cooling process. The second welding pass is then performed, followed by another cooling process.
The Goldak's double-ellipsoid heat source model is used to define the heat flux, and the DFLUX subroutine is utilized to implement the Goldak's double-ellipsoid heat source in Abaqus.
Multi-pass welding simulation using the DFLUX subroutine.
Two-Pass Welding Process
The main feature of this model is the simulation of a two-pass welding process.
In the first stage, the first welding pass is performed. After completing the first pass, the plate undergoes a cooling process.
After the cooling stage, the second welding pass is performed. Finally, another cooling process is implemented.
Sequence of the first welding pass, cooling, second welding pass, and final cooling process.
Goldak's Double-Ellipsoid Heat Source
The Goldak's double-ellipsoid model is used to define the heat flux generated by the welding heat source.
The Goldak heat source provides a nonuniform distribution of heat within the welding region and is implemented in Abaqus using the DFLUX subroutine.
The DFLUX Fortran subroutine defines the heat flux associated with the Goldak's double-ellipsoid heat source during the welding passes.
Goldak's double-ellipsoid heat source implemented using DFLUX.
Cooling Between Welding Passes
An important aspect of the simulation is the cooling process between the two welding passes.
After completion of the first welding pass, the plate is allowed to undergo cooling before the second welding pass is applied.
After the second welding pass, a final cooling process is also performed.
Material Properties
The material used in this simulation is SUS 304.
The temperature-dependent material information for SUS 304 is provided as an Excel file with the project.
What You Will Learn
- How to simulate multi-pass welding in Abaqus.
- How to simulate two welding passes.
- How to define the first welding pass.
- How to define the cooling process after the first pass.
- How to define the second welding pass.
- How to define the final cooling process.
- How to use the DFLUX subroutine in Abaqus.
- How to implement a Fortran DFLUX subroutine.
- How to use Goldak's double-ellipsoid heat source.
- How to define the welding heat flux using DFLUX.
- How to simulate the thermal history associated with multiple welding passes.
- How to define SUS 304 material properties for the welding simulation.
Key Features
- Multi-pass welding simulation.
- Two welding passes.
- Cooling process between welding passes.
- Final cooling process after the second pass.
- DFLUX Fortran subroutine.
- Goldak's double-ellipsoid heat source.
- Welding heat flux defined using DFLUX.
- SUS 304 material.
- Step-by-step training video.
- Abaqus CAE model.
- Abaqus INP file.
- Fortran subroutine code.
- Excel material file.
- Research article included.
Project Information
Important information about this project
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