DFLUX subroutine (VDFLUX Subroutine) in ABAQUS
First of all, let’s define the word flux; Any effect that seems to pass through or move through a surface or substance is referred to as a flux, whether it actually flows or not. For example, when you say heat flux it means the heat energy passes through something. In the engineering world, we must define these fluxes with formulas. They can be a function of time, displacements, temperature, etc.
In the Abaqus, when we want to define a nonuniformly distributed flux in a heat transfer or mass diffusion analysis, which may have a complicated formula and be a function of some parameters such as time and displacement, the DFLUX & VDFLUX subroutines come to your aid. One of the most important applications of DFLUX is in coding and defining the moving heat flux in Abaqus. There is a moving heat flux in problems such as fusion welding.
When we can use DFLUX & VDFLUX subroutine in Abaqus?
In all Steps in the Abaqus where there is heat transfer, we can use DFLUX and VDFLUX subroutines. These Steps are “Coupled temp-displacement”, “Coupled thermal-electric”, “Coupled thermal-electrical-structural”, “Dynamic, Temp-Disp, Explicit”, “Heat transfer”, and “Mass diffusion”.
The types of elements we can use for this subroutine are first-order heat transfer, first-order coupled temperature-displacement, first-order coupled thermal-electrical-structural, and mass diffusion elements.
In this tutorial, firstly, in the lesson, some main points about the DFLUX subroutine introduction are presented, and the VDFLUX subroutine for the explicit solver is also introduced. In the next three workshops, you can learn to write these useful subroutines in the example and get more information about their applications like welding simulation.
What is Included in This Package
Lesson Overview
In this lesson, we will cover all the relevant and essential details about the DFLUX and VDFLUX subroutines. First, we’ll discuss when to use the USDFLD and VUSDFLD subroutines, their applications, and their role in Abaqus. We’ll also explain how they work. These are key concepts you need to understand in order to assess whether this package will meet your needs and whether the DFLUX and VDFLUX subroutines can address your specific requirements.
Next, we will dive deeper into the structure of these subroutines. This section will describe the components of the subroutines, the parameters provided for informational purposes, the parameters you need to update, and the parameters that you can optionally update based on your needs. By understanding this structure, you’ll gain insights into how to write these subroutines and how they can be tailored to address your specific applications using DFLUX or VDFLUX variables.
We will also compare the DFLUX and VDFLUX subroutines, highlighting their differences and applications. For instance, we will explain that DFLUX is used with standard solvers, while VDFLUX is used with explicit solvers. Their specific applications will be defined accordingly.
In the following section, we will explore the differences between the parameters of DFLUX and VDFLUX subroutines. We will provide tips and tricks for converting code between the two. You’ll learn how to adapt a DFLUX subroutine designed for a standard solver into a VDFLUX subroutine for an explicit solver.
The next topic will focus on how to use and implement the DFLUX or VDFLUX subroutines in Abaqus. This is a critical aspect of the lesson, and we will cover how to implement the subroutines in Abaqus using its GUI.
By mastering these concepts, you will be equipped to both use and write DFLUX and VDFLUX subroutines. To make this process more accessible, we’ve included three workshops, detailed below. In these workshops, we’ll guide you step by step through the process of writing subroutines and implementing them in Abaqus to solve different types of problems.
It would be useful to see Abaqus Documentation to understand how it would be hard to start an Abaqus simulation without any Abaqus tutorial.
Lucas Tremblay –
This package helped me to easily simulate welding in Abaqus via DFLUX subroutine. Great support! Great videos!
Patricia Brown –
I think I found the best training videos and files for these two subroutines in this package. The examples implemented in this package were advanced. So, I could use it to simulate my project.
jackson –
Hello, Thank you for putting welding workshops into this subroutine. This is one of the most common uses of this subroutine.
simon –
I liked the categorization. But isn’t there a preview or something like that before I buy it? I think it is necessary for every training package.
nila._.son –
Why there aren’t some practice examples in this package and other packages? I think it would be great if you put some exercise in your packages.
tina.salmon –
Great tutorial videos with English subtitles. You cannot find something like this, well organized on YouTube.