Element type for Modal Analysis
Element type for Modal Analysis
(OP)
Hello friends,
I am doin modal analysis to get natural frequencies of a 450mm tube. I used Brick 8node Solid 45 and got the first mode frequency of 550Hz. Then I tried changing the element type to 20NODE Solid 95. I got the the first mode frequency at 460Hz. Could anyone suggest which elemnt type is good for modal analysis . Also could anyone explain me wat are second order element types and examples of such higher order element types.
Thank you very much for ur precious answers.
Cheers
Harid
I am doin modal analysis to get natural frequencies of a 450mm tube. I used Brick 8node Solid 45 and got the first mode frequency of 550Hz. Then I tried changing the element type to 20NODE Solid 95. I got the the first mode frequency at 460Hz. Could anyone suggest which elemnt type is good for modal analysis . Also could anyone explain me wat are second order element types and examples of such higher order element types.
Thank you very much for ur precious answers.
Cheers
Harid





RE: Element type for Modal Analysis
First order elements are those having nodes at each corner of the element only, whereas second (higher) order elements have what are known as "mid-side" nodes. For example, a shell63 is first order, shell93 second order (compare also solids 45 and 95).
Hope this helps
-- drej --
RE: Element type for Modal Analysis
Thank u all guys...
cheers
harid