GroRaisin
Mechanical
- May 2, 2011
- 3
Hi,
I am currently working with Explicit on a problem of coiling a composite tape around a cylindrical steel hub.
I have a first dynamic explicit step in which I enforce a rotationa velocity to the steel hub, which results in coiling the tape around it.
In a second step I add a rigid guide around the hub + coiled tape, and I want to let the tape deploy freely, through an Explicit analysis.
In order to do so, I import the elset and nset from the first analysis, recreate the constraints and add the guide.
My problem is that I want to start the second step with zero velocity on all the nodes of my model (upon import, the nodes have the velocity calculated in the last interval of the first step).
I can do it through boundary conditions on a node set containing all the nodes, but I did not create this global node set at the beginning, and Abaqus cannot create new node sets containing nodes belonging to imported element sets, unfortunately.
I can not do any STATIC step in between, considered the complexity of contacts.
Is there a simple way to enforce a zero velocity on imported element/node sets at the beginning of an explicit step?
Thank you very much
PS: I do not work with CAE.
I am currently working with Explicit on a problem of coiling a composite tape around a cylindrical steel hub.
I have a first dynamic explicit step in which I enforce a rotationa velocity to the steel hub, which results in coiling the tape around it.
In a second step I add a rigid guide around the hub + coiled tape, and I want to let the tape deploy freely, through an Explicit analysis.
In order to do so, I import the elset and nset from the first analysis, recreate the constraints and add the guide.
My problem is that I want to start the second step with zero velocity on all the nodes of my model (upon import, the nodes have the velocity calculated in the last interval of the first step).
I can do it through boundary conditions on a node set containing all the nodes, but I did not create this global node set at the beginning, and Abaqus cannot create new node sets containing nodes belonging to imported element sets, unfortunately.
I can not do any STATIC step in between, considered the complexity of contacts.
Is there a simple way to enforce a zero velocity on imported element/node sets at the beginning of an explicit step?
Thank you very much
PS: I do not work with CAE.