Welding Simulation Along a Spiral Path Using DFLUX in Abaqus

This Abaqus CAE model demonstrates a Welding Simulation Along a Spiral Path  on a small steel plate using the DFLUX user subroutine. The model uses a moving heat source that follows a spiral path across the plate to simulate the transient thermal behavior during welding.

The steel plate has dimensions of 30 × 30 mm with a thickness of 4 mm. The DFLUX subroutine controls the movement of the heat source along the predefined spiral welding path.

This example is useful for learning how to implement a custom moving heat source in Abaqus and how to control a non-linear welding path using a DFLUX subroutine.

🔧 Model Specifications

🔥 What You Will Learn

This simulation demonstrates how to:

• Create a steel plate model for welding analysis.
• Define thermal properties for the material.
• Set up a transient heat transfer analysis.
• Define a moving heat source using DFLUX.
• Control the position of the heat source as a function of time.
• Create a spiral welding path.
• Apply a spatially and temporally varying heat flux.
• Define appropriate thermal boundary conditions.
• Generate a suitable mesh for thermal analysis.
• Evaluate the temperature distribution during welding.
• Post-process the transient temperature field.

🎯 Applications

This Abaqus example can help engineers and researchers understand the implementation of DFLUX-based moving heat sources for welding simulations.

The same approach can be adapted for different welding paths, heat-source parameters, plate dimensions, and materials.

It is particularly useful for studying:

• Welding heat transfer
• Moving heat sources
• Spiral welding paths
• Thermal cycles
• Temperature distribution
• DFLUX subroutine development
• Abaqus welding simulations

👨‍💻 Who Is This Model For?

This model is suitable for:

• Mechanical Engineering Students
• Welding Engineers
• FEA Engineers
• Abaqus Users
• Researchers
• Graduate Students
• Engineers learning Fortran subroutines in Abaqus