FrictionQPotSpringBlock::detail::Cuspy< Generator > Class Template Reference

A piece-wise quadratic local potential energy. More...

#include <FrictionQPotSpringBlock/detail.h>

Public Member Functions
	Cuspy (double mu, Generator *chunk)
template<class T >
void	force (const T &u, T &f)
	Update forces based on current slips.
template<class T >
double	maxUniformDisplacement (const T &u, int direction) const
	Find maximum particle displacement for which the system is linear and uniform.
template<class T >
void	trigger (T &u, size_t p, double eps, int direction) const
	Trigger a specific particle.

Protected Types
using	stype = typename Generator::size_type
	Size type.

Protected Attributes
stype	m_N
	Number of particles.
double	m_mu
	Curvature of the potentials.
Generator *	m_chunk
	Pointer to chunk of yield 'positions' (automatically updated if needed)

Detailed Description

template<class Generator>
class FrictionQPotSpringBlock::detail::Cuspy< Generator >

A piece-wise quadratic local potential energy.

The resulting force is piece-wise linear: \( f_\mathrm{pot}^{(i)} = \mu (u_{\min}^{(i)} - u_i) \). where \( \mu \) is the curvature of the quadratic potentials, and \( u_{\min}^{(i)} \) the position of the current local minimum. The landscape is given by a cumulative sum of random numbers.

Definition at line 114 of file detail.h.

Member Typedef Documentation

stype

template<class Generator >

using FrictionQPotSpringBlock::detail::Cuspy< Generator >::stype = typename Generator::size_type

protected

Size type.

Definition at line 116 of file detail.h.

Constructor & Destructor Documentation

Cuspy()

template<class Generator >

FrictionQPotSpringBlock::detail::Cuspy< Generator >::Cuspy ( double mu, Generator * chunk )

inline

Parameters

mu	Curvature of the potentials.
chunk	Pointer to chunk of yield 'positions' (automatically updated if needed)

Template Parameters

Generator

The type of the prrng::pcg32_tensor_cumsum object.

Definition at line 129 of file detail.h.

Member Function Documentation

force()

template<class Generator >

template<class T >

void FrictionQPotSpringBlock::detail::Cuspy< Generator >::force ( const T & u, T & f )

inline

Update forces based on current slips.

Parameters

u	Slip per particle.
f	Force per particle (output).

Definition at line 140 of file detail.h.

maxUniformDisplacement()

template<class Generator >

template<class T >

double FrictionQPotSpringBlock::detail::Cuspy< Generator >::maxUniformDisplacement ( const T & u, int direction ) const

inline

Find maximum particle displacement for which the system is linear and uniform.

Parameters

direction

If +1: move right. If -1 move left.

Returns

Float: particle displacement.

Parameters

u	Slip per particle.

Definition at line 177 of file detail.h.

trigger()

template<class Generator >

template<class T >

void FrictionQPotSpringBlock::detail::Cuspy< Generator >::trigger ( T & u, size_t p, double eps, int direction ) const

inline

Trigger a specific particle.

Advance to the yield position right plus a margin of eps / 2, or to the left minus a margin eps / 2.

Parameters

p	Particle index.
eps	Margin.
direction	If +1: move right. If -1 move left.
u	Slip per particle.

Definition at line 194 of file detail.h.

Member Data Documentation

m_chunk

template<class Generator >

Generator* FrictionQPotSpringBlock::detail::Cuspy< Generator >::m_chunk

protected

Pointer to chunk of yield 'positions' (automatically updated if needed)

Definition at line 119 of file detail.h.

m_mu

template<class Generator >

double FrictionQPotSpringBlock::detail::Cuspy< Generator >::m_mu

protected

Curvature of the potentials.

Definition at line 118 of file detail.h.

m_N

template<class Generator >

stype FrictionQPotSpringBlock::detail::Cuspy< Generator >::m_N

protected

Number of particles.

Definition at line 117 of file detail.h.

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

• FrictionQPotSpringBlock/detail.h