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Load term and Young Module measure units

Posted 8 years ago

Good evening to all,

on the website https://reference.wolfram.com/language/FEMDocumentation/tutorial/SolvingPDEwithFEM.html, I found the example below regarding a beam under a peak loas. I do not understand which are the measure units used to define the load term (-1) and the Young Module (Y). Does anyone could help me? Thank you.

op = {Inactive[

   Div][({{0, -((Y \[Nu])/(1 - \[Nu]^2))}, {-((Y (1 - \[Nu]))/(

       2 (1 - \[Nu]^2))), 0}}.Inactive[Grad][

     v[x, y], {x, y}]), {x, y}] +

 Inactive[

   Div][({{-(Y/(1 - \[Nu]^2)),

      0}, {0, -((Y (1 - \[Nu]))/(2 (1 - \[Nu]^2)))}}.Inactive[

      Grad][u[x, y], {x, y}]), {x, y}],

Inactive[

   Div][({{0, -((Y (1 - \[Nu]))/(2 (1 - \[Nu]^2)))}, {-((

       Y \[Nu])/(1 - \[Nu]^2)), 0}}.Inactive[Grad][

     u[x, y], {x, y}]), {x, y}] +

 Inactive[

   Div][({{-((Y (1 - \[Nu]))/(2 (1 - \[Nu]^2))),

      0}, {0, -(Y/(1 - \[Nu]^2))}}.Inactive[Grad][

     v[x, y], {x, y}]), {x, y}]} /. {Y -> 10^3, \[Nu] -> 33/100};



Subscript[\[CapitalGamma], D] =

DirichletCondition[{u[x, y] == 0., v[x, y] == 0.}, x == 0];



{ufun, vfun} =

NDSolveValue[{op == {0, NeumannValue[-1, x == 5]},
Subscript[\[CapitalGamma], D]}, {u, v}, {x, 0, 5}, {y, 0, 1}];
POSTED BY: Andrea Ter
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