Doubts regarding applying RHS forces

[Deepika Kushwah]

Hello,

I am trying to solve a 2D elasticity problem (step 8) by considering a cantilever beam which is fixed at the right end and on the left end there is traction.

But I am facing the following issues:

1. While considering only body forces my code is not working (no traction case).

2. When I am neglecting the body forces and considering only traction then code is working but solutions are not correct (no body force case).  

Please see the attached code for both issues and advise.

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Thanks and Regards

Deepika Kushwah

PhD Scholar, School of Mechanical Science,

IIT Goa 

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[Wolfgang Bangerth]

On 11/8/22 10:23, Deepika Kushwah wrote:
>
> But I am facing the following issues:
> 1. While considering only body forces my code is not working (no traction case).
> 2. When I am neglecting the body forces and considering only traction then
> code is working but solutions are not correct (no body force case).

Deepika:
we don't know what it is you want to do, and so there is nothing we can help
you only knowing that it "is not working" -- we don't know what is wrong, what
the correct output would be, etc. You need to debug the situation yourself, or
at least substantially narrow down what the difference between your
expectation and reality is.

I will point you at a paper that talks about the process of debugging problems
like yours and that I posted about yesterday:
https://www.sciencedirect.com/science/article/pii/S0997753822002753
If you want a pdf version of it, you can find it here:
https://arxiv.org/abs/2209.04198

Best
WB

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Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/