COMSOL Multiphysics™

shlag
Purpose
shlag
Create a Lagrange shape function object.
Syntax
Description
obj = shlag(order, basename)
obj = shlag(order, basename) The Lagrange shape function object is used to
implement finite elements of Lagrange type of any order on any type of mesh
element. order is a positive integer and basename is a string. The variable
basename is represented as a polynomial of degree (at most) order in the local
coordinates.
For more information, see “The Lagrange Element” on page 625 in the COMSOL
Multiphysics User’s Guide.
Examples
The following three sequences set up shape functions for the variables u and v of
order 1 and 2, respectively, using the standard syntax:
fem.dim={'u' 'v'};
fem.shape=[1 2];
fem.dim={'u' 'v'};
fem.shape={shlag(1,'v') shlag(2,'v'}};
fem.dim={'u' 'v'};
fem.shape={'shlag(''basename'',''u'',''order'',1)' ...
'shlag(''basename'',''v'',''order'',2)'}
See Also
sharg_2_5, shbub, shcurl, shdens, shdisc, shdiv, shgp, shgp
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