Modelling non linear springs in abaqus

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SUMMARY

This discussion focuses on modeling non-linear springs in Abaqus, specifically addressing issues encountered when transitioning from linear to non-linear spring models. Users reported that while linear springs successfully carried loads, the non-linear springs, defined using the Connector Builder with a non-linear force-displacement relationship, failed to carry any load. The problem persists despite following the correct procedures for creating the connector section and defining the coordinate systems. Participants seek solutions to ensure that non-linear springs function as intended in their models.

PREREQUISITES
  • Abaqus software, specifically the Connector Builder tool
  • Understanding of spring modeling concepts in finite element analysis
  • Knowledge of force-displacement behavior in non-linear materials
  • Familiarity with coordinate systems in Abaqus
NEXT STEPS
  • Investigate the correct setup of non-linear spring parameters in Abaqus
  • Learn about the implications of force-displacement curves in non-linear spring modeling
  • Explore troubleshooting techniques for load-bearing issues in Abaqus models
  • Review documentation on the Connector Builder and its applications in non-linear analysis
USEFUL FOR

Mechanical engineers, finite element analysts, and researchers working with non-linear spring models in Abaqus who need to troubleshoot load-bearing issues in their simulations.

ronaldkoets
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Dear,

First i modeled linear springs with abaqus: Model >> Assembly >> Engineering Features >> Springs/Dashpots >> Connect two points, In this way i can define just only the spring stiffness.

So therefore i would like to define a non linear springs. I used the connecter builder >> connected the same two points, Created connecten section: basic, axial >> Elasticity, Non linear, Force F1, Uncoupled en i defined three points of the force-displacement behaviour.

In the connector Buileder meno i Created CSYS on axis between points, axis 1 / CSYS 2: Use CSYS 1.

So fare so good i thought,

but: in my results i see that the non-linear spring doesn't carry any load, while first of all in the model with the linear spring (by using the spings/dashpot menu) the springs do carry load.

Is there anyone who have had this problem before?
 
Engineering news on Phys.org
Hello,
Even I get the same problem. The non-linear spring doesn't carry any force. How did u resolve this. please help me with this
 

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