Self-Weight

[alexzive]

Hello there.
How does Abaqus handle "self weight" in model parts? (I mean gravitational weight due to gravitational mass)

1) is it automatically calculated once you give the density in the mat. properties as a distributed load on the vertical axis ? or should I specify a dload which corresponds to the weight of the model/mechanical parts?

2) are there differences implementing self-weight between STATIC and DYNAMIC analysis?

Many Thanks! Alex

 

[bassmanjax]

1) it's not automatically calculated - you have to specify it as a *DLOAD. With this, you then have to define the direction and magnitude of gravity.

2) Not sure what you mean by differences, but there will be an influence in dynamic analyses by including gravity.

Regards

Martin Stokes CEng MIMechE

 

[alexzive]

many thanks for the answers!

2) I was meaning, if maybe only dynamic analysis requires dload. But from your answer I understand that in both cases, dynamic and static I have to specify self weight with dload.

regards, Alex