Regarding boundary condition

[Deepika Kushwah]

Hello Everyone,

I am trying to solve the 1-D bar problem by taking step-3 as a reference. I am not able to understand how to impose a dirichlet boundary condition (u=0 at one end and u=0.001 at the last node? 

How to proceed?

Thanks & Regards,

Deepika

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[Deepika Kushwah]

[Wolfgang Bangerth]

On 9/29/22 04:41, Deepika Kushwah wrote:
>
> I am trying to solve the 1-D bar problem by taking step-3 as a
> reference. I am not able to understand how to impose a dirichlet
> boundary condition (u=0 at one end and u=0.001 at the last node?
> How to proceed?

Take a look here:
https://github.com/dealii/dealii/wiki/Frequently-Asked-Questions#dealii-programs-behave-differently-in-1d-than-in-23d

Best
W.

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

[Deepika Kushwah]

Thank you Dr. Wolfgang Bangerth,

I have successfully applied boundary conditions at the extreme node of 1-D bar but not able to impose it on intermediate points.

I have following doubts-

1. How to check boundary ids and assign boundary values corresponding to any intermediate node?

2. In the solution file (vtk), 4 points can be seen instead of 3 for 2 elements. Why is it so?

3. How to alter the output parameters/variables given in the solution file?

Thanks & Regards

Deepika

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