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Does anyone know how to formulate plate and shell elements?

Coordinator
Apr 3, 2015 at 9:05 AM
Hello,
I want to implement a Plate / Shell elements into the library. Does Anyone know what exactly are the formulations for those? (stiffness matrix, mass matrix and damping matrix (damping is not necessary for now))
Jun 28, 2015 at 9:47 PM
hi,

i think you're jumping to the next level if you did not implement plane stress / strain before
you can checked formula from any standard finite element book, these elements are less complicated than plate/shell since translation only need to solve.

for your references you may look (here's i taken online):
code & docs
http://sourceforge.net/projects/calfem/

most problem faced about drilling dof
https://www.isr.umd.edu/~austin/aladdin.d/report94-12.pdf

btw, did you finishing implement xml input in your code so i can give a try

rgds
Coordinator
Jun 30, 2015 at 10:54 AM

Thanks for link.

Unfortunately Xml input is not added. There will be a simple graphical UI for creating model (soon) with node, element and loads…

Coordinator
Aug 5, 2015 at 8:30 AM
I've almost implemented a triangular plate DKT element (based on discrete Kirchoff theory) from this thesis (thesis by Kaushalkumar Kansara):
http://scholar.lib.vt.edu/theses/available/etd-05142004-234133/unrestricted/Thesis.pdf

I only need to evaluate the calculation before release. Usually i do evaluation by generating several very random elements and then calculating its stiffness matrix and then compare result with right value from a reference. The problem now is that i have no access to right value now! does anyone know an simple application that i pass node coordinates, material properties and thickness of triangular DKT into it and it give me stiffness matrix of triangular DKT element?
Coordinator
May 19, 2016 at 6:16 AM
Marked as answer by epsi1on on 5/18/2016 at 11:16 PM