Re: Difference between fully integration and reduced integration
aruk77500 <aruk77500 <at> yahoo.com>
2009-11-14 13:30:28 GMT
It is about numerical integration. The ingetral for evaluating for example stiffness matrix is carried along finite elements. These integrals are approximated with sum of some calculated values at specific points, which are gauss points, through the elements. more the gauss points, more accurate your calculations will be. reduced integration elements have only one integration point while in full integration, there are four integration points. the stress results are calculated and output at these integration points and then extrapolated to other poitns by means of shape functions.
the problem with full integration elements is shear locking, while the problem with reduced integration elements is hour-glass modes. there are specially formulated elements in abaqus for hour glassing, which is activated via element type selection tool in abaqus CAE. reduced integration elements in abaqus are cheaper and they are default element types I think.
more and more info can be found in documentation.
I wish this helps
--- In Abaqus <at> yahoogroups.com, Prasad Reddy <prasad522_reddy <at> ...> wrote:
> Hi everybody,
> I am Prasad. I have a doubt to distinguish between fully and reduced integration elements. Can anybody please explain me little about fully and reduced integrated elements?
> Best Regards,
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