genericROM.Containers.ConstitutiveLaws.ZmatConstitutiveLaw

class ZmatConstitutiveLaw(set)[source]

Bases: Mordicus.Containers.ConstitutiveLaws.ConstitutiveLawBase.ConstitutiveLawBase

Class containing a ZmatConstitutiveLaw

constitutiveLawVariables

dictionary with variable names (str) as keys and variables as type

Type

dict

density

density of the material

Type

float

behavior

Z-mat behavior keyword

Type

str

ComputeConstitutiveLaw(temperature, dtemp, stran, dstran, statev)[source]

Main function of the class: computes a new material state using a constitutive law solver from a previous material state and variations of temperature and strain

Parameters

  • temperature (1D np.ndarray or list) – temperature at the previous state, at integration points (np.ndarray of size (nbIntPoints) or list of length nbIntPoints)

  • dtemp (1D np.ndarray or list) – variations of temperature between the previous state and the new state to compute, at integration points (np.ndarray of size (nbIntPoints) or list of length nbIntPoints)

  • stran (np.ndarray) – strain at the previous state, at integration points (np.ndarray of size (nbIntPoints,nbeOfDualComponents))

  • dstran (np.ndarray) – variations of strain between the previous state and the new state to compute, at integration points (np.ndarray of size (nbIntPoints,nbeOfDualComponents))

  • statev (np.ndarray) – internal state variables at the previous state, at integration points (np.ndarray of size (nbIntPoints,nbeOfStateVariables))

Returns

  • np.ndarray – of size (nbIntPoints, nbeOfDualComponents, nbeOfDualComponents) ddsdde: local tangent matrix at the new state

  • np.ndarray – of size (nbIntPoints, nbeOfDualComponents) stress: stress at the new state

  • np.ndarray – of size (nbIntPoints, nbeOfStateVariables) statev: internal state variables at the new state

GetConstitutiveLawVariables()[source]
Returns

complete dictionary defining the constitutive law variables

Return type

dict

GetDensity()[source]

Returns the density of the material

Returns

density

Return type

float

GetOneConstitutiveLawVariable(var)[source]

Returns one variable of the constitutive law

Parameters

var (str) – key of the dictionnary for storing the variable (e.g. name of the variable)

Returns

variable of the constitutive law

Return type

custom_data_structure

PyumatCall(k, temperature, dtemp, stran, dstran, statev)[source]

Computes a new material state using a constitutive law solver from a previous material state and variations of temperature and strain at the integration point ranked k

Parameters

  • temperature (np.ndarray or list) – temperature at the previous state, at integration points (np.ndarray of size (nbIntPoints) or list of length nbIntPoints)

  • dtemp (np.ndarray or list) – variations of temperature between the previous state and the new state to compute, at integration points (np.ndarray of size (nbIntPoints) or list of length nbIntPoints)

  • stran (np.ndarray) – strain at the previous state, at integration points (np.ndarray of size (nbIntPoints,nbeOfDualComponents))

  • dstran (np.ndarray) – variations of strain between the previous state and the new state to compute, at integration points (np.ndarray of size (nbIntPoints,nbeOfDualComponents))

  • statev (np.ndarray) – internal state variables at the previous state, at integration points (np.ndarray of size (nbIntPoints,nbeOfStateVariables))

Returns

of size (nbIntPoints, nbeOfDualComponents, nbeOfDualComponents) ddsdde: local tangent matrix at the new state

Return type

np.ndarray

SetBehavior(behavior)[source]

Sets the name of the model behavior

Parameters

behavior (str) – name of the model behavior

SetConstitutiveLawVariables(constitutiveLawVariables)[source]

Sets the constitutiveLawVariables dictionary

Parameters

constitutiveLawVariables (dict) – dictionary with variable names (str) as keys and variables as type

SetDensity(density)[source]

Sets the density of the constitutive law

Parameters

density (float) – density of the material

SetOneConstitutiveLawVariable(var, value)[source]

Sets one variable of the constitutive law

Parameters

  • var (str) – name of the variable

  • value (custom_data_structure) – variable of the constitutive law

UpdateInternalState()[source]

Updates the state of the internal variables Not application to the present implementation