#include <elastic_membrane_constant_pressure.h>

Inheritance diagram for GRINS::ElasticMembraneConstantPressure:

Collaboration diagram for GRINS::ElasticMembraneConstantPressure:

Public Member Functions
	ElasticMembraneConstantPressure (const GRINS::PhysicsName &physics_name, const GetPot &input)

virtual	~ElasticMembraneConstantPressure ()

virtual void	element_time_derivative (bool compute_jacobian, AssemblyContext &context)
	Time dependent part(s) of physics for element interiors. More...

void	reset_pressure (libMesh::Real pressure_in)

Public Member Functions inherited from GRINS::ElasticMembraneAbstract
	ElasticMembraneAbstract (const GRINS::PhysicsName &physics_name, const GetPot &input)

virtual	~ElasticMembraneAbstract ()

virtual void	init_context (AssemblyContext &context)
	Initialize context for added physics variables. More...

Public Member Functions inherited from GRINS::SolidMechanicsAbstract
	SolidMechanicsAbstract (const GRINS::PhysicsName &physics_name, const GetPot &input)

virtual	~SolidMechanicsAbstract ()

virtual void	set_time_evolving_vars (libMesh::FEMSystem *system)
	Set which variables are time evolving. More...

Public Member Functions inherited from GRINS::Physics
	Physics (const GRINS::PhysicsName &physics_name, const GetPot &input)

virtual	~Physics ()

virtual void	init_variables (libMesh::FEMSystem *)
	Initialize variables for this physics. More...

virtual bool	enabled_on_elem (const libMesh::Elem *elem)
	Find if current physics is active on supplied element. More...

void	set_is_steady (bool is_steady)
	Sets whether this physics is to be solved with a steady solver or not. More...

bool	is_steady () const
	Returns whether or not this physics is being solved with a steady solver. More...

virtual void	auxiliary_init (MultiphysicsSystem &system)
	Any auxillary initialization a Physics class may need. More...

virtual void	register_postprocessing_vars (const GetPot &input, PostProcessedQuantities< libMesh::Real > &postprocessing)
	Register name of postprocessed quantity with PostProcessedQuantities. More...

virtual void	preassembly (MultiphysicsSystem &)
	Perform any necessary setup before element assembly begins. More...

virtual void	reinit (MultiphysicsSystem &)
	Any reinitialization that needs to be done. More...

virtual void	side_time_derivative (bool, AssemblyContext &)
	Time dependent part(s) of physics for boundaries of elements on the domain boundary. More...

virtual void	nonlocal_time_derivative (bool, AssemblyContext &)
	Time dependent part(s) of physics for scalar variables. More...

virtual void	element_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for element interiors. More...

virtual void	side_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for boundaries of elements on the domain boundary. More...

virtual void	nonlocal_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for scalar variables. More...

virtual void	damping_residual (bool, AssemblyContext &)
	Damping matrix part(s) for element interiors. All boundary terms lie within the time_derivative part. More...

virtual void	mass_residual (bool, AssemblyContext &)
	Mass matrix part(s) for element interiors. All boundary terms lie within the time_derivative part. More...

virtual void	nonlocal_mass_residual (bool, AssemblyContext &)
	Mass matrix part(s) for scalar variables. More...

void	init_ics (libMesh::FEMSystem *system, libMesh::CompositeFunction< libMesh::Number > &all_ics)

virtual void	compute_element_time_derivative_cache (AssemblyContext &)

virtual void	compute_side_time_derivative_cache (AssemblyContext &)

virtual void	compute_nonlocal_time_derivative_cache (AssemblyContext &)

virtual void	compute_element_constraint_cache (AssemblyContext &)

virtual void	compute_side_constraint_cache (AssemblyContext &)

virtual void	compute_nonlocal_constraint_cache (AssemblyContext &)

virtual void	compute_damping_residual_cache (AssemblyContext &)

virtual void	compute_mass_residual_cache (AssemblyContext &)

virtual void	compute_nonlocal_mass_residual_cache (AssemblyContext &)

virtual void	compute_postprocessed_quantity (unsigned int quantity_index, const AssemblyContext &context, const libMesh::Point &point, libMesh::Real &value)

ICHandlingBase *	get_ic_handler ()

Public Member Functions inherited from GRINS::ParameterUser
	ParameterUser (const std::string &user_name)

virtual	~ParameterUser ()

virtual void	set_parameter (libMesh::Number &param_variable, const GetPot &input, const std::string &param_name, libMesh::Number param_default)
	Each subclass can simultaneously read a parameter value from. More...

virtual void	set_parameter (libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &func, const GetPot &input, const std::string &func_param_name, const std::string &param_default)
	Each subclass can simultaneously read a parsed function from. More...

virtual void	set_parameter (libMesh::ParsedFEMFunction< libMesh::Number > &func, const GetPot &input, const std::string &func_param_name, const std::string &param_default)
	Each subclass can simultaneously read a parsed function from. More...

virtual void	move_parameter (const libMesh::Number &old_parameter, libMesh::Number &new_parameter)
	When cloning an object, we need to update parameter pointers. More...

virtual void	move_parameter (const libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &old_func, libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &new_func)
	When cloning an object, we need to update parameter pointers. More...

virtual void	move_parameter (const libMesh::ParsedFEMFunction< libMesh::Number > &old_func, libMesh::ParsedFEMFunction< libMesh::Number > &new_func)
	When cloning an object, we need to update parameter pointers. More...

virtual void	register_parameter (const std::string &param_name, libMesh::ParameterMultiAccessor< libMesh::Number > &param_pointer) const
	Each subclass will register its copy of an independent. More...

Private Member Functions
	ElasticMembraneConstantPressure ()

Private Attributes
libMesh::Real	_pressure

Additional Inherited Members
Static Public Member Functions inherited from GRINS::Physics
static void	set_is_axisymmetric (bool is_axisymmetric)
	Set whether we should treat the problem as axisymmetric. More...

static bool	is_axisymmetric ()

Static Public Attributes inherited from GRINS::ParameterUser
static std::string	zero_vector_function = std::string("{0}")
	A parseable function string with LIBMESH_DIM components, all 0. More...

Protected Types inherited from GRINS::SolidMechanicsAbstract
typedef const libMesh::DenseSubVector< libMesh::Number > &(libMesh::DiffContext::*	VarFuncType) (unsigned int) const

typedef void(libMesh::FEMContext::*	InteriorFuncType) (unsigned int, unsigned int, libMesh::Real &) const

typedef libMesh::Real(libMesh::DiffContext::*	VarDerivType) () const

Protected Member Functions inherited from GRINS::ElasticMembraneAbstract
const libMesh::FEGenericBase< libMesh::Real > *	get_fe (const AssemblyContext &context)

Protected Member Functions inherited from GRINS::Physics
libMesh::UniquePtr< libMesh::FEGenericBase< libMesh::Real > >	build_new_fe (const libMesh::Elem elem, const libMesh::FEGenericBase< libMesh::Real > fe, const libMesh::Point p)

void	parse_enabled_subdomains (const GetPot &input, const std::string &physics_name)

void	check_var_subdomain_consistency (const FEVariablesBase &var) const
	Check that var is enabled on at least the subdomains this Physics is. More...

Protected Attributes inherited from GRINS::SolidMechanicsAbstract
DisplacementVariable &	_disp_vars

Protected Attributes inherited from GRINS::Physics
const PhysicsName	_physics_name
	Name of the physics object. Used for reading physics specific inputs. More...

GRINS::ICHandlingBase *	_ic_handler

std::set< libMesh::subdomain_id_type >	_enabled_subdomains
	Subdomains on which the current Physics class is enabled. More...

Static Protected Attributes inherited from GRINS::Physics
static bool	_is_steady = false
	Caches whether or not the solver that's being used is steady or not. More...

static bool	_is_axisymmetric = false
	Caches whether we are solving an axisymmetric problem or not. More...

Detailed Description

Definition at line 33 of file elastic_membrane_constant_pressure.h.

Constructor & Destructor Documentation

GRINS::ElasticMembraneConstantPressure::ElasticMembraneConstantPressure	(	const GRINS::PhysicsName &	physics_name,
		const GetPot &	input
	)

Definition at line 40 of file elastic_membrane_constant_pressure.C.

References GRINS::SolidMechanicsAbstract::_disp_vars, _pressure, GRINS::MultcomponentVectorVariable::dim(), GRINS::PhysicsNaming::elastic_membrane(), GRINS::PhysicsNaming::elastic_membrane_constant_pressure(), GRINS::Physics::parse_enabled_subdomains(), and GRINS::ParameterUser::set_parameter().

     : ElasticMembraneAbstract(physics_name,input),
       _pressure(0.0)
   {
     if( !input.have_variable("Physics/"+physics_name+"/pressure") )
       {
         std::cerr << "Error: Must input pressure for "+physics_name+"." << std::endl
                   << "       Please set Physics/"+physics_name+"/pressure." << std::endl;
         libmesh_error();
       }
 
     this->set_parameter
       (_pressure, input, "Physics/"+physics_name+"/pressure", _pressure );
 
     // If the user specified enabled subdomains in this Physics section,
     // that's an error; we're slave to ElasticMembrane.
     if( input.have_variable("Physics/"+PhysicsNaming::elastic_membrane_constant_pressure()+"/enabled_subdomains" ) )
       libmesh_error_msg("ERROR: Cannot specify subdomains for "
                         +PhysicsNaming::elastic_membrane_constant_pressure()
                         +"! Must specify subdomains through "
                         +PhysicsNaming::elastic_membrane()+".");
 
     this->parse_enabled_subdomains(input,PhysicsNaming::elastic_membrane());
 
     if( this->_disp_vars.dim() != 3 )
       libmesh_error_msg("ERROR: ElasticMembraneConstantPressure only valid for three dimensions! Make sure you have three components in your Displacement type variable.");
   }

virtual GRINS::ElasticMembraneConstantPressure::~ElasticMembraneConstantPressure ( )

inlinevirtual

Definition at line 40 of file elastic_membrane_constant_pressure.h.

40 {};

GRINS::ElasticMembraneConstantPressure::ElasticMembraneConstantPressure ( )

private

Member Function Documentation

void GRINS::ElasticMembraneConstantPressure::element_time_derivative	(	bool	compute_jacobian,
		AssemblyContext &	context
	)

virtual

Time dependent part(s) of physics for element interiors.

Reimplemented from GRINS::Physics.

Definition at line 69 of file elastic_membrane_constant_pressure.C.

   {
     const unsigned int n_u_dofs = context.get_dof_indices(_disp_vars.u()).size();
 
     const std::vector<libMesh::Real> &JxW =
       this->get_fe(context)->get_JxW();
 
     const std::vector<std::vector<libMesh::Real> >& u_phi =
       this->get_fe(context)->get_phi();
 
     libMesh::DenseSubVector<libMesh::Number> &Fu = context.get_elem_residual(_disp_vars.u());
     libMesh::DenseSubVector<libMesh::Number> &Fv = context.get_elem_residual(_disp_vars.v());
     libMesh::DenseSubVector<libMesh::Number> &Fw = context.get_elem_residual(_disp_vars.w());
 
     libMesh::DenseSubMatrix<libMesh::Number>& Kuv = context.get_elem_jacobian(_disp_vars.u(),_disp_vars.v());
     libMesh::DenseSubMatrix<libMesh::Number>& Kuw = context.get_elem_jacobian(_disp_vars.u(),_disp_vars.w());
 
     libMesh::DenseSubMatrix<libMesh::Number>& Kvu = context.get_elem_jacobian(_disp_vars.v(),_disp_vars.u());
     libMesh::DenseSubMatrix<libMesh::Number>& Kvw = context.get_elem_jacobian(_disp_vars.v(),_disp_vars.w());
 
     libMesh::DenseSubMatrix<libMesh::Number>& Kwu = context.get_elem_jacobian(_disp_vars.w(),_disp_vars.u());
     libMesh::DenseSubMatrix<libMesh::Number>& Kwv = context.get_elem_jacobian(_disp_vars.w(),_disp_vars.v());
 
     unsigned int n_qpoints = context.get_element_qrule().n_points();
 
     // All shape function gradients are w.r.t. master element coordinates
     const std::vector<std::vector<libMesh::Real> >& dphi_dxi =
       this->get_fe(context)->get_dphidxi();
 
     const std::vector<std::vector<libMesh::Real> >& dphi_deta =
       this->get_fe(context)->get_dphideta();
 
     const libMesh::DenseSubVector<libMesh::Number>& u_coeffs = context.get_elem_solution( _disp_vars.u() );
     const libMesh::DenseSubVector<libMesh::Number>& v_coeffs = context.get_elem_solution( _disp_vars.v() );
     const libMesh::DenseSubVector<libMesh::Number>& w_coeffs = context.get_elem_solution( _disp_vars.w() );
 
     const std::vector<libMesh::RealGradient>& dxdxi  = this->get_fe(context)->get_dxyzdxi();
     const std::vector<libMesh::RealGradient>& dxdeta = this->get_fe(context)->get_dxyzdeta();
 
     for (unsigned int qp=0; qp != n_qpoints; qp++)
       {
         // sqrt(det(a_cov)), a_cov being the covariant metric tensor of undeformed body
         libMesh::Real sqrt_a = sqrt( dxdxi[qp]*dxdxi[qp]*dxdeta[qp]*dxdeta[qp]
                                      - dxdxi[qp]*dxdeta[qp]*dxdeta[qp]*dxdxi[qp] );
 
         // Gradients are w.r.t. master element coordinates
         libMesh::Gradient grad_u, grad_v, grad_w;
         for( unsigned int d = 0; d < n_u_dofs; d++ )
           {
             libMesh::RealGradient u_gradphi( dphi_dxi[d][qp], dphi_deta[d][qp] );
             grad_u += u_coeffs(d)*u_gradphi;
             grad_v += v_coeffs(d)*u_gradphi;
             grad_w += w_coeffs(d)*u_gradphi;
           }
 
         libMesh::RealGradient dudxi( grad_u(0), grad_v(0), grad_w(0) );
         libMesh::RealGradient dudeta( grad_u(1), grad_v(1), grad_w(1) );
 
         libMesh::RealGradient A_1 = dxdxi[qp] + dudxi;
         libMesh::RealGradient A_2 = dxdeta[qp] + dudeta;
 
         libMesh::RealGradient A_3 = A_1.cross(A_2);
 
         /* The formula here is actually
            P*\sqrt{\frac{A}{a}}*A_3, where A_3 is a unit vector
            But, |A_3| = \sqrt{A} so the normalizing part kills
            the \sqrt{A} in the numerator, so we can leave it out
            and *not* normalize A_3.
         */
         libMesh::RealGradient traction = _pressure/sqrt_a*A_3;
 
         libMesh::Real jac = JxW[qp];
 
         for (unsigned int i=0; i != n_u_dofs; i++)
           {
             Fu(i) -= traction(0)*u_phi[i][qp]*jac;
 
             Fv(i) -= traction(1)*u_phi[i][qp]*jac;
 
             Fw(i) -= traction(2)*u_phi[i][qp]*jac;
 
             if( compute_jacobian )
               {
                 for (unsigned int j=0; j != n_u_dofs; j++)
                   {
                     libMesh::RealGradient u_gradphi( dphi_dxi[j][qp], dphi_deta[j][qp] );
 
                     const libMesh::Real dt0_dv = _pressure/sqrt_a*(u_gradphi(0)*A_2(2) - A_1(2)*u_gradphi(1));
                     const libMesh::Real dt0_dw = _pressure/sqrt_a*(A_1(1)*u_gradphi(1) - u_gradphi(0)*A_2(1));
 
                     const libMesh::Real dt1_du = _pressure/sqrt_a*(A_1(2)*u_gradphi(1) - u_gradphi(0)*A_2(2));
                     const libMesh::Real dt1_dw = _pressure/sqrt_a*(u_gradphi(0)*A_2(0) - A_1(0)*u_gradphi(1));
 
                     const libMesh::Real dt2_du = _pressure/sqrt_a*(u_gradphi(0)*A_2(1) - A_1(1)*u_gradphi(1));
                     const libMesh::Real dt2_dv = _pressure/sqrt_a*(A_1(0)*u_gradphi(1) - u_gradphi(0)*A_2(0));
 
                     Kuv(i,j) -= dt0_dv*u_phi[i][qp]*jac;
                     Kuw(i,j) -= dt0_dw*u_phi[i][qp]*jac;
 
                     Kvu(i,j) -= dt1_du*u_phi[i][qp]*jac;
                     Kvw(i,j) -= dt1_dw*u_phi[i][qp]*jac;
 
                     Kwu(i,j) -= dt2_du*u_phi[i][qp]*jac;
                     Kwv(i,j) -= dt2_dv*u_phi[i][qp]*jac;
                   }
               }
           }
       }
 
     return;
   }

void GRINS::ElasticMembraneConstantPressure::reset_pressure ( libMesh::Real pressure_in )

Definition at line 182 of file elastic_membrane_constant_pressure.C.

References _pressure.

   {
     _pressure = pressure_in;
     return;
   }

Member Data Documentation

libMesh::Real GRINS::ElasticMembraneConstantPressure::_pressure

private

Definition at line 52 of file elastic_membrane_constant_pressure.h.

Referenced by ElasticMembraneConstantPressure(), and reset_pressure().

The documentation for this class was generated from the following files:

src/physics/include/grins/elastic_membrane_constant_pressure.h
src/physics/src/elastic_membrane_constant_pressure.C

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation