This video explains the common error caused by miss defining the boundary condition and element type. Mostly this appears as the "Time increment required is less than the specified time" in Abaqus. This video is for beginners who want to start learning Abaqus. First, we explain the element type and contact interaction with details. The introduction provides enough information to understand the concept of surface to surface contact, reduced integration option and quadratic element type in Abaqus. Next, we explain how to fix the common problem with an example in Abaqus software. This video is the fourth and the last episode of this series and you could find the result here:
Episode one:
• Too Many Attempts & Less than the Min...
Episode two:
• How to Fix Errors in Abaqus by Modify...
Episode Three:
• How to Fix Errors in Abaqus by Modify...
You could download all files together from the website link here:
https://hyperlyceum.com/product/too-m...
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If you feel you need to know more about the process of solving and model in Abaqus. please watch the following video:
https://hyperlyceum.com/product/incre...
The recorded video is about 15 minutes and helps you to learn how to detect and fix the errors.
The video content is as follows:
0:00 Intro
1:04 Mesh and Element type in Abaqus
1:23 reduced integration and quadratic element
2:20 Master and Slave in Abaqus
2:53 Finite Sliding and Small sliding
3:20 Surface to surface and Node to Surface
3:42 Contact property in Abaqus
4:51 Model explanation
7:14 Time increment required is less than the minimum specified
10:00 Number of element for Contact in Abaqus
10:40 Linear, Reduced integration, and Quadratic element
12:58 Ending
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More information if you are interested:
Abaqus:
Abaqus is a friendly user software to solve the finite element method models. The software covers a large variety of models by providing many options to users. To simplify the modelling process, it uses many predefined parameters to help the engineers to save time on the modelling process. However, depending on the model each might require different parameters and skipping them leads to creating errors in simulation. As a result, in Abaqus, you might face many errors which some are easy to solve, and some are difficult. The most comment errors are the “Too many attempts” and “Time increment required is less than the specified time”.
Where you can find the type of error:
Where you can find the type of error: You can find the errors from the message file or STL file in the Abaqus job directory. The easiest way to find the error is from the monitor section in the job manager. From the incrementation, for the "Too many attempts" error you could see that the last 5 of them were reduced. For the “Time increment required is less than the specified time” error you could see the last increment size is smaller than the defined increment in your step. There is also a comment in the report that also explains the error to you.
These two errors might appear for many reasons which make them very common to appear. These errors explain the solver tried to solve the simulation but due to some mistake in the model, it aborted the process. The errors might happen cause of mistakes in, any module such as material properties, step, load, and mesh.