Hello Everyone,
I am trying to define a non-linear spring element in Abaqus using the following values.
-8505.0193, -40
-6854, -30
-5514.401, -20
-4075.366, -10
0, 0
4075.366, 10
5514.401, 20
6854, 30
8505.0193, 40.
It is working fine with positive values. But when I define zero or negative values. it is showing an error as
"The independent variables must be arranged in ascending order. This error may have been caused by a possible empty line on the datacards in the property definition."
Zoheb Nawaz Delete the empty lines. Can you share your complete Abaqus model (.inp)?
Please find the attachment enclosed with the input file. Its still not working. can you help me with this?
Hi
The error you encountered when defining a non-linear spring element in Abaqus indicates that the independent variable values (displacement or strain) must be arranged in ascending order. In your case, it seems that the presence of zero or negative values is causing the issue.
To resolve this error, you need to ensure that the independent variable values are arranged in ascending order, regardless of the sign of the values. Here's how you can modify your data to satisfy this requirement:
-8505.0193, -40 -6854, -30 -5514.401, -20 -4075.366, -10 0, 0 (keep this as it is) 4075.366, 10 5514.401, 20 6854, 30 8505.0193, 40
Make sure to remove any empty lines or additional spaces between the data points in the property definition.
By arranging the data in ascending order, you should be able to define your non-linear spring element without encountering the error.
Here's a basic outline of how to define a nonlinear spring element in ABAQUS:
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