geometry::Fracture Class Reference

A class for fracture state of bonds. More...

#include <fracture.h>

Collaboration diagram for geometry::Fracture:

Public Member Functions
	Fracture (const std::vector< util::Point > *nodes, const std::vector< std::vector< std::size_t > > *neighbor_list=nullptr)
	Constructor.
	Fracture ()
	Constructor.
void	setBondState (const std::size_t &i, const std::size_t &j, const bool &state)
	Sets the bond state.
bool	getBondState (const std::size_t &i, const std::size_t &j) const
	Read bond state.
const std::vector< uint8_t > &	getBonds (const std::size_t &i) const
	Returns the list of bonds of node i.
std::vector< uint8_t > &	getBonds (const std::size_t &i)
	Returns the list of bonds of node i.
std::string	printStr (int nt=0, int lvl=0) const
	Returns the string containing printable information about the object.
void	print (int nt=0, int lvl=0) const
	Prints the information about the object.

Private Attributes
std::vector< std::vector< uint8_t > >	d_fracture
	Vector which stores the state of bonds.

Detailed Description

A class for fracture state of bonds.

This class provides method to read and modify fracture state of bonds

Definition at line 26 of file fracture.h.

Constructor & Destructor Documentation

Fracture() [1/2]

geometry::Fracture::Fracture	(	const std::vector< util::Point > *	nodes,
		const std::vector< std::vector< std::size_t > > *	neighbor_list = nullptr
	)

Constructor.

If neighbor list is null, then it assumes all nodes interact with all other nodes (PeriDEM implementation).

Parameters

nodes	Pointer to nodal coordinates
neighbor_list	Pointer to neighbor list

Definition at line 20 of file fracture.cpp.

                                                          {
 
  std::size_t n = nodes->size();
  d_fracture.resize(n);
 
  tf::Executor executor(util::parallel::getNThreads());
  tf::Taskflow taskflow;
 
  taskflow.for_each_index(
    (std::size_t) 0, n, (std::size_t) 1, [this, &nodes, &neighbor_list, n](std::size_t i) {
      // get neighborlist of node i if neighborlist is provided
      std::vector<size_t> neighs;
      if (neighbor_list != nullptr)
        neighs = (*neighbor_list)[i];
 
      // compute number of neighbors
      size_t ns = n;
      if (!neighs.empty())
        ns = neighs.size();
 
      size_t s = ns / 8;
      if (s * 8 < ns)
        s++;
      d_fracture[i] = std::vector<uint8_t>(s, uint8_t(0));
    }
  ); // for_each
 
  executor.run(taskflow).get();
}

References util::parallel::getNThreads().

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Fracture() [2/2]

geometry::Fracture::Fracture

(

)

Constructor.

Definition at line 18 of file fracture.cpp.

{}

Member Function Documentation

getBonds() [1/2]

std::vector< uint8_t > & geometry::Fracture::getBonds

(

const std::size_t &

i

)

Returns the list of bonds of node i.

Parameters

i

Nodal id

Returns

list Bonds of node i

Definition at line 74 of file fracture.cpp.

                                                                 {
  return d_fracture[i];
}

getBonds() [2/2]

const std::vector< uint8_t > & geometry::Fracture::getBonds

(

const std::size_t &

i

)

const

Returns the list of bonds of node i.

Parameters

i

Nodal id

Returns

list Bonds of node i

Definition at line 70 of file fracture.cpp.

      {
  return d_fracture[i];
}

getBondState()

bool geometry::Fracture::getBondState	(	const std::size_t &	i,
		const std::size_t &	j
	)		const

Read bond state.

Parameters

i	Nodal id
j	Local id of bond in neighbor list of i

Returns

bool True if bond is fractured otherwise false

Definition at line 64 of file fracture.cpp.

                                                                          {
 
  auto bond = d_fracture[i][j / 8];
  return bond >> (j % 8) & 1UL;
}

Referenced by anonymous_namespace{materialUtil.cpp}::computeHydrostaticStrainI(), anonymous_namespace{materialUtil.cpp}::computeStateThetaxI(), and anonymous_namespace{materialUtil.cpp}::updateBondFractureDataI().

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print()

void geometry::Fracture::print ( int  nt = 0, int  lvl = 0  ) const

inline

Prints the information about the object.

Parameters

nt	Number of tabs to append before printing
lvl	Information level (higher means more information)

Definition at line 90 of file fracture.h.

{ std::cout << printStr(nt, lvl); }

References printStr().

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printStr()

std::string geometry::Fracture::printStr	(	int	nt = 0,
		int	lvl = 0
	)		const

Returns the string containing printable information about the object.

Parameters

nt	Number of tabs to append before printing
lvl	Information level (higher means more information)

Returns

string String containing printable information about the object

Definition at line 78 of file fracture.cpp.

                                                          {
 
  auto tabS = util::io::getTabS(nt);
  std::ostringstream oss;
  oss << tabS << "------- Fracture --------" << std::endl << std::endl;
  oss << tabS << "Num of outer fracture data = " << d_fracture.size() <<
  std::endl;
  oss << tabS << std::endl;
 
  return oss.str();
}

References util::io::getTabS().

Referenced by print().

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setBondState()

void geometry::Fracture::setBondState	(	const std::size_t &	i,
		const std::size_t &	j,
		const bool &	state
	)

Sets the bond state.

Parameters

i	Nodal id
j	Local id of bond in neighbor list of i
state	State which is applied to the bond

Definition at line 51 of file fracture.cpp.

                                                         {
 
  // to set i^th bit as true of integer a,
  // a |= 1UL << (i % 8)
 
  // to set i^th bit as false of integer a,
  // a &= ~(1UL << (i % 8))
 
  state ? (d_fracture[i][j / 8] |= 1UL << (j % 8))
        : (d_fracture[i][j / 8] &= ~(1UL << (j % 8)));
}

Referenced by anonymous_namespace{materialUtil.cpp}::updateBondFractureDataI().

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Field Documentation

d_fracture

std::vector<std::vector<uint8_t> > geometry::Fracture::d_fracture

private

Vector which stores the state of bonds.

Given node i, vector d_fracture[i] is the list of state of bonds of node i.

We only use 1 bit per bond of node to store the state.

Definition at line 101 of file fracture.h.

---

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

• /home/user/project/src/geometry/fracture.h
• /home/user/project/src/geometry/fracture.cpp