SPRINGA with rotational stiffness?

[AIliev]

Hi

Does someone have an idea, is it possible to use springs with rotational stiffness in explicit analysis. I have looked at the help and I have found this:

The SPRINGA element is available in both Abaqus/Standard and Abaqus/Explicit. SPRINGA acts between two nodes, with its line of action being the line joining the two nodes, so that this line of action can rotate in large-displacement analysis.

Active degrees of freedom
SPRINGA: 1, 2, 3

So what should I do if I want to use springs with rotational stiffness in explicit analysis? Does anyone have an idea?

- Thanks in advance

 

[akabarten]

Hello,

There is no limitation to use rotational spring in Abaqus/Explicit. In chapter 27.1.1 Springs you can find informations:
The terms “force” and “displacement” are used throughout the description of spring elements. When the spring is associated with displacement degrees of freedom, these variables are the force and relative displacement in the spring. If the springs are associated with rotational degrees of freedom, they are torsional springs; these variables will then be the moment transmitted by the spring and the relative rotation across the spring.

Active DOF 1,2,3 has only element type SPRINGA, but elements SPRING1 and SPRING2 have all 6 DOF.

You can also use connector element type hinge or cylindrical.

Regards
akaBarten

 

[AIliev]

Hi

Thanks for the reply. Yes, SPRING1 and SPRING2 have all 6 DOF, but can I use them in explicit analysis, because in the same chapter 27.1.1 Springs it is said that "SPRING1 and SPRING2 elements are available only in Abaqus/Standard".

I will try using "connector element type hinge or cylindrical".

Thanks again.
-Alex

 

[akabarten]

Hello,

>>> chapter 27.1.1 Springs it is said that "SPRING1 and SPRING2 elements are available only in Abaqus/Standard".
Yes, you are right I was not aware of that, sorry for the confusion.

In this case connector elements seem reasonable.

Regards,
akaBarten