rc/sfepy — Issue #3: unify/improve handling of material parameters in terms
Author: rc
Created: 2012-01-24 15:58:25+00:00
State: open

Some terms support constant parameters, some support parameters in mesh
vertices, some support whaterver... it's quite a mess, that increases the
number of terms significantly too.

All this should be encapsulated in a class, that would provide parameter
values in points in space and time as necessary.

For speed reasons, cython implementation might be required, but let us
start with a pure python version first.

Migrated from http://code.google.com/p/sfepy/issues/detail?id=93

earlier comments

robert.cimrman said, at 2009-09-03T14:50:46.000Z:

Done. All material parameters are now evaluated in quadrature points. There is also
new material syntax (shown in the long form):

material_10 = {
'name' : 'm',
'region' : 'SomeRegion',
'values' : {
# This gets tiled to all physical QPs (constant function)
'val' : [0.0, -1.0, 0.0],
# This does not - '.' denotes a special value, e.g. a flag.
'.val0' : [0.0, 0.1, 0.0],
},
}

material_3 = {
'name' : 'm',
'region' : 'SomeRegion,
'function' : 'some_function',
}

def some_function(ts, coor, region, ig, mode=None):
out = {}
if mode == 'qp':
out['val'] =