OK, it's in.
I like this example because the Lagrange multiplier has a simple
physical interpretation: it's the traction required to satisfy the
constraint.
David
On 03/29/2012 08:27 PM, Kirk, Benjamin (JSCEG311) wrote:
> I haven't looked at it yet but my general comment is by all means more examples are better... We can always rearrange later, but adding content is hugely appreciated.
>
>
>
>
>
> On Mar 29, 2012, at 7:23 PM, "David Knezevic"<dknezevic@...> wrote:
>
>> I was at a COMSOL junket today, and they said they have a cool feature
>> that allows you to enforce constraints. Then they showed a constraint
>> example of a uniformly loaded 2D cantilever, where you want to figure
>> out what upward force is required on the free boundary of the cantilever
>> to obtain zero vertical displacement there.
>>
>> This is just a small change wrt systems_of_equations_ex4, we just need
>> to add a Lagrange multiplier (SCALAR). So I figured I'd implement it
>> (see attached). Should I check it in? (Tell me if I'm going overboard
>> with the examples... it's a bit addictive though hehe)
>>
>> David
>> <systems_of_equations_ex5.C>
>> 
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