Defining Moving Loads in Abaqus

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Including 39 hours of step-by-step tutorials.

First premium package description:
Including a set of tutorials for writing DLOAD subroutine to define moving loads
on a straight line for single and multiple wheels in one pass, multiple pass and reciprocating passes.
- Cost: 30 EUR (must be paid by the PayPal or other payment methods according to your country)
- Included files: tutorials, slides, Abaqus files (CAE, JNL, INP), subroutine files
- Models are created by using Abaqus 6.14 (2014)
- Level: advanced

Second premium package description:
Including a set of tutorials for modeling moving wheels (no subroutine procedure) on straight line which transfer the moving loads to the ground (simulations are done using both the Dynamic Explicit and Implicit steps)
- Cost: 30 EUR (must be paid by the PayPal or other payment methods according to your country)
- Included files: tutorials, slides, Abaqus files (CAE, JNL, INP)
- Models are created by using Abaqus 6.14 (2014)
- Level: advanced

Related tutorials about writing DLOAD subroutine and conducting nonlinear dynamic analysis:

Don’t hesitate to ask any questions you might have about the explanations presented in this video using the comments below. We try to answer all questions regarding the video details in the comments below.

In many engineering problems, for calculating the exact stress and strain fields, moving loads must be defined in the FE model. for example, in the stress analysis of a bridge or a railway, the dynamic loads that are applied because of moving cars, trucks, trains and any other kind of vehicles must be modeled.
As the moving vehicles have mass, they have weight. So their weights are moving loads. This weight is transmitted to the bridge or railway by their wheels. Actually the weight is divided between their wheels.
In some cases, we can assume the same pressure applied by wheels to the surface underneath.
In this video, all of the aspects of defining moving loads in Abaqus are explained.
The way of applying filter on the results for removing the numerical noise is explained too. Usually filters must be applied on the results of Abaqus/Explicit solver.

Table of content:
- Ways of defining moving loads in Abaqus
- Choosing appropriate steps for simulation
- Using dynamic explicit step
- Using dynamic implicit step
- Comparison of two steps
- Meshing and partitioning the geometry
- Example 1: moving of a rigid wheel on a bar
- Defining the moving load by using subroutines
- Example 2: defining loads of a moving 6 wheel vehicle on an inclined curved path

#Abaqus
#subroutine
#Abaqus_subroutine
#DLOAD
#VDLOAD
#dynamic_analysis
#moving_load

[hosseinmohammadtaheri]

Good example to show the way of moving load simulation in Abaqus. Thank you Mr Mirzabozorg!

[rasoolmokhtarihomami]

Thank you very much for your great explanation.

[nomadicsrilankan]

Hi, In my analysis, I used a moving pressure (did not model the tyre) on a road section. However, when I use dynamic implicit steps, I see oscillations in my deflection profile. I cannot seem to find the error in my subroutine file. Do you have any idea about this?

[ごりごりあん]

Is it possible to create a beam as a wire part instead of a solid part and do the same analysis?

[ごりごりあん]

I created a model that imitated yours, but "Surfaces which include edges cannot be used with * contact pair” is displayed and it cannot be analyzed. What should I do?

[HamzaDjeloud]

This is an important field like rotating bending fatigue test

[ごりごりあん]

How did you decide the magnitude of velocity and angular velocity?

[matsualaidrus]

How to model a cyclically moving wheel?