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jzh
Member
Username: jzh

Post Number: 8
Registered: 07-2010
Posted on Wednesday, September 15, 2010 - 08:38 am:   
Can this type of boundary condition be defined in FlexPDE?Boudary Condition

u is the variable.
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rgnelson
Moderator
Username: rgnelson

Post Number: 1407
Registered: 06-2003
Posted on Wednesday, September 15, 2010 - 11:15 am:   
There is no direct way to impose a second-derivative boundary condition, but there are several ways to reconfigure your equation system so that it can be enforced. It depends on what the rest of your equations look like.
See, for example, "Samples|Applications|Stress|Free_Plate.pde".

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