Material definition

A material is defined using material. It consists in a name ( 5 characters), a type and a list of parameters which depends on the type.

RIGID type:

only density is necessary

tdur = material(name='TDURx', type='RIGID', density=1000.)

ELAS type:

elastic material

ma1 = material(name='steel', type='ELAS', density=0.25e+4,
               elas='standard', young=0.1e+15, nu=0.2, anisotropy='isotropic')

ELAS_DILA type:

elastic material

ma1 = material(name='steel', type='ELAS_DILA', density=0.25e+4,
               elas='standard', young=0.1e+15, nu=0.2, anisotropy='isotropic',
               dilatation=1e-5, T_ref_meca=20. )

VISCO_ELAS type:

visco elastic material

steel = material(name='steel', type='VISCO_ELAS', density=8.93e3,
                 elas='standard', anisotropy='isotropic', young=1.17e11, nu=0.35,
                 viscous_model='KelvinVoigt', viscous_young=1.17e9, viscous_nu=0.35)

ELAS_PLAS type:

visco elasto plastic material

steel = material(name='steel', type='ELAS_PLAS', density=8.93e3,
                 elas='standard', anisotropy='isotropic', young=1.17e11, nu=0.35,
                 critere='Von-Mises', isoh='linear', iso_hard=4.e8, isoh_coeff=1e8, cinh='none', visc='none')

THERMO_ELAS type:

thermo elastic material

mat = material(name='Steel', type='THERMO_ELAS', density=1.0,
               elas='standard', young=0.0, nu=0.0, anisotropy='isotropic', dilatation = 0.0,
               T_ref_meca = 0.0, conductivity='field', specific_capacity='field')

PORO_ELAS type:

poro elastic material

mat = material(name='Steel', type='PORO_ELAS', density=1.0,
               elas='standard', young=0.0, nu=0.0, anisotropy='isotropic',
               hydro_cpl = 0.0, conductivity='field', specific_capacity='field')

DISCRETE type:

give explicitely the matrices of a 1D element

mat = material(name=mat_name, type='DISCRETE', masses=[0., 0., 0.],
               stiffnesses=[kx, ky, kz], viscosities=[0., 0., 0.])

USER_MAT type:

It is possible to give a MatLib material file

acier = material(name='acier', type='USER_MAT', density=0., file_mat='elas.mat')