Hi Lisa,
I think that step-44
<https://www.dealii.org/developer/doxygen/deal.II/step_44.html#Solidassemble_system_rhs>
applies
the type of boundary condition that you are describing here.

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Regards,
J-P
On Thursday, October 13, 2016 at 11:47:02 AM UTC+2, Lisa Collins wrote:
>
> hi,
> I forgot to mention that I want to implement the pressure BC in a vector
> valued problem.
> a cylinder with a hot pressurized gas inside it.
> Best regards.
> Lisa
>
> On Thursday, October 13, 2016 at 11:27:08 AM UTC+2, Lisa Collins wrote:
>>
>> Hi,
>> I just would like to implement a simple constant pressure BC for a solid
>> material in the referential configuration.
>> Pressure is constant and independent. I want to model a pressurized
>> cylinder.
>> Thanks.
>> Lisa
>>
>>
>> On Wednesday, October 12, 2016 at 1:39:33 PM UTC+2, Jean-Paul Pelteret
>> wrote:
>>>
>>> Dear Lisa,
>>>
>>> There are numerous tutorials that cover the application of pressure BCs
>>> for various media. Your question is far too general
>>> <https://groups.google.com/forum/#!topic/dealii/GRZMUTLIm2I> to be
>>> answered effectively:
>>> - Are you implementing this for a fluid or solid material?
>>> - If a solid, then are you applying the pressure in the referential
>>> (i.e. constant load per unit reference area) or spatial configuration (i.e.
>>> constant load per unit current area)?
>>> - What formulation/FE discretisation are you using? i.e. is the pressure
>>> an independent variable or not, and is it a continuous or discontinuous
>>> field?
>>>
>>> If you provide more details then perhaps it is possible to provide
>>> further guidance.
>>>
>>> Regards,
>>> J-P
>>>
>>>
>>> On Wednesday, October 12, 2016 at 12:58:53 PM UTC+2, Lisa Collins wrote:
>>>>
>>>> Hello,
>>>> How can I implement *Constant pressure boundary condition* on a curved
>>>> face such as pressurized cylinder.
>>>> In which step this kind of BC is implemented.
>>>> Thanks.
>>>> Lisa
>>>>
>>>
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