3-D "brick" elements
3-D "brick" elements
(OP)
I was told that the three-dimension brick elements exhibit higher stiffness than you will see in a physical test. Can anyone elaborate on this? Or refer me to a paper that has quantified how much of a difference it can make?





RE: 3-D "brick" elements
Good results can be obtained with linear elements, parabolic elements, and even higher order elements than parabolic depending on how the elements are used, etc. Of course the particular mesh used with each type of element will vary to achieve the same (or equivalent) results........
Ed.R.
RE: 3-D "brick" elements
RE: 3-D "brick" elements
RE: 3-D "brick" elements
www.Roshaz.com
RE: 3-D "brick" elements
RE: 3-D "brick" elements
RE: 3-D "brick" elements
corus
RE: 3-D "brick" elements
I think if you compare tet elements to brink elements you may find that the tet elements are slightly stiffer based on the inherent nature of their geometry. However, this varies from program to program, and between elements also.
RE: 3-D "brick" elements
TOP
CSWP, BSSE
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RE: 3-D "brick" elements
Your question is not very clear, so my questions are going to be some general ones:
I have some question about the match of the boundaries conditions including loads.
The supports, area of supports or border conditions, Are they accuracy enough?. It is seem if you over look the same, but if you compare the relations of the contacts areas, the location of rotation point on the support area of model and prototype, are the same?.
Something just like this could be told of the load application point.
To void this kind of problmes i normally model part of the support before reach the infinite stiffness support. I did the same with the point of load application just to have the same concentration load.
This one is a silly question but, did you test on elastic behavior of the material for model and prototype?
Besides that what ther hand what kind of 8 element did you use?, there is a lot of them, could you be more specific.