impact analysis of two bodies in block100 format

Altair Forum User

Hi,

 

I want to simulate impact between two bodies in hyperworks.

 

First body is a rectangular block which act as a cantilever beam (nodes at left side area is fixed).

 

Second body is sphere, which was initially at a certain height from the free edge of the rectangular block, is dropped on the block.

 

Modelling was done in hypermesh and there were no warning or errors.

 

But, when I plotted the displacement contour in hyperview, found that at time=0, it shows displacement for the beam (contact between the bodies actually begins at time=2 second.).

 

This gives error in the final result.

 

I have to set the displacement at time,t=0 as zero.

 

How can I do that? Please help me..

 

Vishnu 

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Altair Forum User

Altair Forum User said:

Hi,

 

I want to simulate impact between two bodies in hyperworks.

 

First body is a rectangular block which act as a cantilever beam (nodes at left side area is fixed).

 

Second body is sphere, which was initially at a certain height from the free edge of the rectangular block, is dropped on the block.

 

Modelling was done in hypermesh and there were no warning or errors.

 

But, when I plotted the displacement contour in hyperview, found that at time=0, it shows displacement for the beam (contact between the bodies actually begins at time=2 second.).

 

This gives error in the final result.

 

I have to set the displacement at time,t=0 as zero.

 

How can I do that? Please help me..

 

Vishnu 

Please help me......

Altair Forum User

Hi Vishnu,

I guess you applied given displacement for the movement of sphere. If so the input curve for displacement must be shifted to 0. To do that you should use excel: minus each displacement value by an amount of the displacement value at t=0. Then go to HyperWorks -> XYPlots -> Curve Editor to  create the curve for given displacement.