Question regarding Springelements
Altair EmployeeHi all,
I want to model a spring with constant force over its elongation. In PROP/TYPE4 I tried to set H1=8, so I can insert a constant function in fctID11(which defines Force vs spring length). When I tried to start my simulation an error occured 'Spring with null stiffness, K has to be bigger than 0'. From my understanding I wouldn't need to define a K-Factor as it's already defined in fctID11..
Any ideas on how to model a spring with constant force? Is it possible to give a function for the K-Factor?
Regards
Kevin
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Altair EmployeeHi George,
But if I enter a stiffness value, the Force will be calculated as F=K*x, in which the Force will not be constant as defined in fctID11. In fact, there would be two diffrent Force values defined at each step if I understand correctly.
I'm looking forward to your test model.
Kevin
Altair EmployeeHi Kevin,
You are right, from the function it will calculate.
II'm attaching a simple model with Type 4 spring. Works fine with H=0 and constant function, sample model is just 1 spring, imposed displacement extension and compression.
Force remains constant
Altair EmployeeAlright! Thank you very much
Hi Kevin,
This approach seems fine.
I'll check for a simple test model and will share with you.