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MathGroup Archive 2007

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Re: Re: Membrane

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74442] Re: [mg74387] Re: Membrane
  • From: gardyloo <gardyloo at mail.wsu.edu>
  • Date: Wed, 21 Mar 2007 02:54:28 -0500 (EST)
  • References: <etlpv8$r6j$1@smc.vnet.net> <200703200302.WAA14608@smc.vnet.net>

   My reading of the question is that he's fixing the four sides of a
rectangular section of membrane at a certain constant displacement (on
three sides) and at F(x) (the fourth side), and needs a minimal-energy
surface which satisfies those boundary conditions in the static case.

   If that's the case, and he can solve the problem analytically or
numerically, he just needs a Plot3D statement with the arguments as
(say) the Cartesian coordinates of the membrane projected on the x-y plane.

   Of course, I may be way off there.

                         Curtis O.



dh wrote:
> Hi Nodar,
>
> your description is not good. A surface can in general not be defined by 
>
> 4 curves (three lines and curve F(x)). What do you mean exactly?
>
> Daniel
>
>
>
> shubi at nusun.jinr.ru wrote:
>
>   
>> Dear All !
>>     
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>   
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>> I wont create a 3D Graphical object as opaque membrane limited by the
>>     
>
>   
>> three lines and curve F(x) on the upper side. Then, compose new
>>     
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>> Graphic from the such objects.
>>     
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>   
>> Please help me.
>>     
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>   
>>                                                  Nodar Shubitidze
>>     
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>   
>>                                                  Joint Institute for
>>     
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>> Nuclear Research
>>     
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>   
>>                                                  Dubna, Moscow reg.,
>>     
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>> Russia
>>     
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>   
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>   


-- 
==========================================================
Curtis Osterhoudt
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PGP Key ID: 0x088E6D7A
Please avoid sending me Word or PowerPoint attachments
See http://www.gnu.org/philosophy/no-word-attachments.html
==========================================================



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