Spring with different stiffness in compession and tension
Hi
I am working on Direct Transient response analysis.
I am modeling the shock isolator as a bush. But the problem is the stiffness value in one direction , compression stiffness and tension stiffness are not same.
Can any one help in modeling such a bush.
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Hi ..Thanks for response.
I have only two stiffness values (K compression, K tension) I have no deflection vs Stiffness data.
Is there any way i can do this.
You can also create a curve / table (force vs deflection) with two values. For example:
TABLED1 5 LINEAR LINEAR + -1.0 -100.0 -0.1 -100.0 0.0 0.0 0.1 100. $--1---][--2---][--3---][--4---][--5---][--6---][--7---][--8---][--9---] + 1.0 100. ENDT
Thank you
Hi
I am using PBUSHT in DTRAN solution . This is not working for me.
can any body help in this ( Is PBUSHT compatible with DTRAN ? )
The data i have is attached . Please help me in modelling the same.
<?xml version="1.0" encoding="UTF-8"?>
In my opinion pbusht in DTRAN should work. But I haven't use it together until now. Maybe you can add your table entries or model?
Best regards
For this you need an PBUSHT card with TABLED1 for your damper direction. In the table you can define the stiffness depending on the elongation.