How to change 1D mesh element pivot/ connection point?

Divakara Rao K

Dear all, below is a 1D beam element (L Angle). In the below snap 'Existing Pivot point' is the one which has come by default.

How can I modify the pivot point as required to any point?

Revert at the earliest possible please.

 

Thanks & Regards

 

Jason_Craanen

Hello,

What do you mean by "pivot point"?

The point you are pointing at is the Shear Center, which is dependent on the geometry.

https://help.altair.com/hwdesktop/hwx/topics/user_interface/model_browser_hyperbeam_view_graphics_window_r.htm#model_browser_hyperbeam_view_graphics_window_r

Do you want to flip the whole section?

Divakara Rao K

Hi Jason,

Thanks for the reply.

As you said, yes, it is the shear centre and it is a geometrical property.

Now the beam section rotates about the shear centre if we assign a standard angle. Right? (This point of rotation I am terming as a 'Pivot point'.

My question is, 'Is it possible the change point of rotation (Pivot point) to any other location as required instead of the shear centre?

Hope I am clear. You may help better now.

Thank you.

Jason_Craanen

Divakara Rao K said:

Hi Jason,

Thanks for the reply.

As you said, yes, it is the shear centre and it is a geometrical property.

Now the beam section rotates about the shear centre if we assign a standard angle. Right? (This point of rotation I am terming as a 'Pivot point'.

My question is, 'Is it possible the change point of rotation (Pivot point) to any other location as required instead of the shear centre?

Hope I am clear. You may help better now.

Thank you.

Hello,

I am sorry, I am still now following. The shear center is dependent on the geometry, so how can it change without changing the geometry? I showed how you can flip the section if that is what you are asking.

Maybe I need to ask you, what is your intent with changing the pivot point?

Divakara Rao K

Jason Craanen_20442 said:

Hello,

I am sorry, I am still now following. The shear center is dependent on the geometry, so how can it change without changing the geometry? I showed how you can flip the section if that is what you are asking.

Maybe I need to ask you, what is your intent with changing the pivot point?

Well, here my intent is explained with an example.

Below is an 1D Beam of 'T' Section.

And when I assign the property, then the resultant representation is as below.

 

But the result I need is as below.

 

If 'Pivot Point' can be shifted to the point as indicated, section representation as required can be achieved.

The above can be achieved using the offset option. But, if the 'pivot point' can be modified as required it will be easier.

Hope I am clear with the intent now.

Jason_Craanen

Divakara Rao K said:

Well, here my intent is explained with an example.

Below is an 1D Beam of 'T' Section.

And when I assign the property, then the resultant representation is as below.

 

But the result I need is as below.

 

If 'Pivot Point' can be shifted to the point as indicated, section representation as required can be achieved.

The above can be achieved using the offset option. But, if the 'pivot point' can be modified as required it will be easier.

Hope I am clear with the intent now.

I don't think this has to do with the shear center of the beam section.

This has to do with Beam edit of the Offset and Orientation of the element

You can look into these youtube videos on updating this

Divakara Rao K

Jason Craanen_20442 said:

I don't think this has to do with the shear center of the beam section.

This has to do with Beam edit of the Offset and Orientation of the element

You can look into these youtube videos on updating this

Yes, with offset and orientation, I am able to achieve what is required.

For less number of elements, we can do it manually. But where the elements are in thousands with varying thicknesses of the plate and different sections. It has become hectic.

If the 'pivot point' can be changed to the required position, the job becomes easy. If I just control the orientation there will not be any need of using the offset option.

Divakara Rao K

Jason Craanen_20442 said:

I don't think this has to do with the shear center of the beam section.

This has to do with Beam edit of the Offset and Orientation of the element

You can look into these youtube videos on updating this

Hi Jason,

LinkedIn connection request sent, request to accept!