Stiffness matrix fea plate element

AI Thread Summary
The stiffness of a plate element in finite element analysis (FEA) is calculated using the relationship between force, area, length, and Young's modulus. A user seeks an algorithm to convert degrees of freedom (dofs) from a local 3D stiffness matrix to a global stiffness matrix. It is suggested to explore open-source FEA resources online for relevant code, although writing a custom solution may be more straightforward for those familiar with their project. The discussion emphasizes the importance of understanding the underlying principles of stiffness matrix calculations. Overall, the conversation centers on practical approaches to implementing stiffness matrix calculations in FEA.
chandran
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i know that the stiffness for a line element is calculated as fl/ae where
a is known as area and l is the length,f is the force applied and e is the
youngs modulus.

How the stiffness of a plate element are calculated?
 
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hi, anybody has algorithm for index (from dofs) of each node for 3D local stiffness matrix to global stiffness matrix.
 
You could search internet finite element resources for an open source code which would be closest to the application you're developing and extract it from there. Although it may be simplest to write it yourself if you're already that far in writing whatever you're doing, I'm fairly sure it's not the most complex part of it :wink: .
 

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