Newton-Raphson Iteration in Transient Thermal Analysis

AI Thread Summary
In transient thermal analysis using finite element analysis (FEA) with implicit schemes like the Crank-Nicolson method, the application of Newton-Raphson iterations based on the residual vector at each time step is unclear in many references. The Crank-Nicolson method is specifically a finite difference approach, which may lead to confusion regarding its implementation in FEA contexts. Users are encouraged to consult the help manuals of their specific FEA software for clarification on this topic. The discussion highlights a need for clearer resources on the integration of Newton-Raphson iterations in transient thermal analysis. Overall, understanding the distinctions between methods is crucial for accurate analysis.
Shriram
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Hi,

I have been quite confused about this for sometime now. It has not been mentioned clearly in the books/references that I have looked into.

In transient thermal analysis using FEA with implicit scheme or the Crank Nicolson scheme, are there Newton Raphson iterations based on the residual vector in every time-step?

Any insights or suggestions are highly appreciated.


Thanks,
Shriram
 
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The Crank-Nicolson is a finite difference method, not a finite element method.

Have you checked your FEA programs help manual?

Thanks
Matt
 

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