Element type with cubic Lagrange interpolation

[ZhouXD1989]

Hello all,

I found higher order element using cubic Lagrange interpolation in the following website:
https://mooseframework.inl.gov/magpie/source/problems/FEProblemBase.html

Does moose provide this type of element for 2D and 3D problems?

Best wishes,
Zhou

[dschwen]

Given that your link is identical to https://mooseframework.inl.gov/source/problems/FEProblemBase.html (the MOOSE documentation) I think we can confidently answer this with "yes".

[dschwen]

too confident

[ZhouXD1989]

Dear Daniel, Thanks for your reply. Does moose have an introduction of the element library? I already found moose have QUAD9 and HEX27 with quadratic basis function, but what is the element name with cubic basis function? I am working with gradient elasticity recently, that's why I want to try higher order elements in moose. Does moose have other type of higher order elements for gradient elasticity? Thank you for your time and effort. Best wishes, Xiandong Daniel Schwen <[email protected]> 于2020年11月17日周二 下午4:10写道：

…

Given that your link is identical to https://mooseframework.inl.gov/source/problems/FEProblemBase.html (the MOOSE documentation) I think we can confidently answer this with "yes". — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#16198 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALDXGIBAFD5ADPBCTEDNURDSQKG47ANCNFSM4TW6T43Q> .

-- Best regards, Xian-Dong Zhou Mechanics of Functional Materials, Institution of Materials Science, TU Darmstadt E-mail: zhouxd22@g <[email protected]>mail.com

[dschwen]

Hey, ugh, yes. I just realized we have second order elements, but not third order elements. So you might have to settle for a hermite shape function!

[jiangwen84]

Daniel is correct, and Hermite shape function is third order shape function with C1 continuity. However, Hermite shape function does not work with the displaced mesh. So only small strain problem would work.