Nodal Rotational Inertia

Calculates the inertial torques and inertia proportional damping corresponding to the nodal rotational inertia.

Description

This class computes the component of the torque due to rotational inertia. Inertia proportional Rayleigh damping is also computed by this NodalKernel. Please refer to C0TimoshenkoBeam for details.

Input Parameters

  • rotationsrotational displacement variables

    C++ Type:std::vector

    Options:

    Description:rotational displacement variables

  • componentAn integer corresponding to the direction the variable this nodalkernel acts in. (0 for rot_x, 1 for rot_y, and 2 for rot_z).

    C++ Type:unsigned int

    Options:

    Description:An integer corresponding to the direction the variable this nodalkernel acts in. (0 for rot_x, 1 for rot_y, and 2 for rot_z).

  • IxxMoment of inertia in the x direction.

    C++ Type:double

    Options:

    Description:Moment of inertia in the x direction.

  • rotational_velocitiesrotational velocity variables

    C++ Type:std::vector

    Options:

    Description:rotational velocity variables

  • betabeta parameter for Newmark Time integration

    C++ Type:double

    Options:

    Description:beta parameter for Newmark Time integration

  • variableThe name of the variable that this boundary condition applies to

    C++ Type:NonlinearVariableName

    Options:

    Description:The name of the variable that this boundary condition applies to

  • IzzMoment of inertia in the z direction.

    C++ Type:double

    Options:

    Description:Moment of inertia in the z direction.

  • rotational_accelerationsrotational acceleration variables

    C++ Type:std::vector

    Options:

    Description:rotational acceleration variables

  • IyyMoment of inertia in the y direction.

    C++ Type:double

    Options:

    Description:Moment of inertia in the y direction.

  • gammagamma parameter for Newmark Time integration

    C++ Type:double

    Options:

    Description:gamma parameter for Newmark Time integration

Required Parameters

  • save_inThe name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Options:

    Description:The name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • eta0Constant real number defining the eta parameter forRayleigh damping.

    Default:0

    C++ Type:double

    Options:

    Description:Constant real number defining the eta parameter forRayleigh damping.

  • Ixz0Moment of inertia in the xz direction.

    Default:0

    C++ Type:double

    Options:

    Description:Moment of inertia in the xz direction.

  • Ixy0Moment of inertia in the xy direction.

    Default:0

    C++ Type:double

    Options:

    Description:Moment of inertia in the xy direction.

  • x_orientationUnit vector along the x direction if different from global x direction.

    C++ Type:libMesh::VectorValue

    Options:

    Description:Unit vector along the x direction if different from global x direction.

  • diag_save_inThe name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Options:

    Description:The name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • alpha0Alpha parameter for mass dependent numerical damping induced by HHT time integration scheme

    Default:0

    C++ Type:double

    Options:

    Description:Alpha parameter for mass dependent numerical damping induced by HHT time integration scheme

  • boundaryThe list of boundary IDs from the mesh where this boundary condition applies

    C++ Type:std::vector

    Options:

    Description:The list of boundary IDs from the mesh where this boundary condition applies

  • y_orientationUnit vector along the y direction if different from global y direction.

    C++ Type:libMesh::VectorValue

    Options:

    Description:Unit vector along the y direction if different from global y direction.

  • blockThe list of block ids (SubdomainID) that this object will be applied

    C++ Type:std::vector

    Options:

    Description:The list of block ids (SubdomainID) that this object will be applied

  • Iyz0Moment of inertia in the yz direction.

    Default:0

    C++ Type:double

    Options:

    Description:Moment of inertia in the yz direction.

Optional Parameters

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector

    Options:

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Options:

    Description:Set the enabled status of the MooseObject.

  • seed0The seed for the master random number generator

    Default:0

    C++ Type:unsigned int

    Options:

    Description:The seed for the master random number generator

  • implicitTrueDetermines whether this object is calculated using an implicit or explicit form

    Default:True

    C++ Type:bool

    Options:

    Description:Determines whether this object is calculated using an implicit or explicit form

  • use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

    Default:False

    C++ Type:bool

    Options:

    Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

Advanced Parameters

  • vector_tagsnontimeThe tag for the vectors this Kernel should fill

    Default:nontime

    C++ Type:MultiMooseEnum

    Options:nontime time

    Description:The tag for the vectors this Kernel should fill

  • extra_vector_tagsThe extra tags for the vectors this Kernel should fill

    C++ Type:std::vector

    Options:

    Description:The extra tags for the vectors this Kernel should fill

  • matrix_tagssystemThe tag for the matrices this Kernel should fill

    Default:system

    C++ Type:MultiMooseEnum

    Options:nontime system

    Description:The tag for the matrices this Kernel should fill

  • extra_matrix_tagsThe extra tags for the matrices this Kernel should fill

    C++ Type:std::vector

    Options:

    Description:The extra tags for the matrices this Kernel should fill

Tagging Parameters

Input Files