Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F78817720
DynamicsDiagonal.h
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Fri, Aug 23, 03:49
Size
5 KB
Mime Type
text/x-c++
Expires
Sun, Aug 25, 03:49 (2 d)
Engine
blob
Format
Raw Data
Handle
20100484
Attached To
rGOOSEFEM GooseFEM
DynamicsDiagonal.h
View Options
/* =================================================================================================
(c - GPLv3) T.W.J. de Geus (Tom) | tom@geus.me | www.geus.me | github.com/tdegeus/GooseFEM
================================================================================================= */
#ifndef GOOSEFEM_DYNAMICS_DIAGONAL_H
#define GOOSEFEM_DYNAMICS_DIAGONAL_H
// -------------------------------------------------------------------------------------------------
#include "GooseFEM.h"
// ================================= GooseFEM::Dynamics::Diagonal ==================================
namespace
GooseFEM
{
namespace
Dynamics
{
namespace
Diagonal
{
// ===================================== Simulation - Periodic =====================================
template
<
class
Element
>
class
Periodic
{
public:
// variables
// ---------
// element/quadrature/material definition
std
::
unique_ptr
<
Element
>
elem
;
// mesh: nodal position/displacement/velocity/acceleration, DOF-numbers, connectivity, dimensions
size_t
nnode
,
nelem
,
nne
,
ndim
,
ndof
;
MatS
conn
,
dofs
;
MatD
x
,
u
,
v
,
a
;
// linear system: columns (also "M" and "D" which are diagonal)
ColD
M
,
Minv
,
D
,
F
,
V
,
V_n
,
A
,
A_n
;
// time integration
double
dt
,
t
=
0.0
;
// constructor
// -----------
Periodic
(){};
Periodic
(
std
::
unique_ptr
<
Element
>
elem
,
const
MatD
&
x
,
const
MatS
&
conn
,
const
MatS
&
dofs
,
double
dt
);
// functions
// ---------
void
velocityVerlet
();
// one time step of the time integrator
void
Verlet
();
// one time step of the time integrator (no velocity dependence)
void
ground
();
// ground the system: set A = V = 0 (also for their history)
void
updated_x
();
// process update in "x"
void
updated_u
(
bool
init
=
false
);
// process update in "u", if init all possible updates are made
void
updated_v
(
bool
init
=
false
);
// process update in "v", if init all possible updates are made
void
assemble_M
();
// assemble the mass matrix from the element mass matrices
void
assemble_D
();
// assemble the damping matrix from the element damping matrices
void
assemble_F
();
// assemble the force from the element forces
};
// =================================== Simulation - SemiPeriodic ===================================
template
<
class
Element
>
class
SemiPeriodic
{
public:
// variables
// ---------
// element/quadrature/material definition
std
::
unique_ptr
<
Element
>
elem
;
// mesh: nodal position/displacement/velocity/acceleration, DOF-numbers, connectivity, dimensions
size_t
nnode
,
nelem
,
nne
,
ndim
,
ndof
;
MatS
conn
,
dofs
;
MatD
x
,
u
,
v
,
a
;
// fixed DOFs: prescribed velocity/acceleration, DOF-numbers, dimensions
size_t
nfixed
;
ColS
fixedDofs
;
ColD
fixedV
,
fixedA
;
// linear system: columns (also "M" and "D" which are diagonal)
ColD
M
,
Minv
,
D
,
F
,
V
,
V_n
,
A
,
A_n
;
// time integration
double
dt
,
t
=
0.0
;
// constructor
// -----------
SemiPeriodic
(){};
SemiPeriodic
(
std
::
unique_ptr
<
Element
>
elem
,
const
MatD
&
x
,
const
MatS
&
conn
,
const
MatS
&
dofs
,
const
ColS
&
fixedDofs
,
double
dt
);
// functions
// ---------
void
velocityVerlet
();
// one time step of the time integrator
void
Verlet
();
// one time step of the time integrator (no velocity dependence)
void
ground
();
// ground the system: set A = V = 0 (also for their history)
void
updated_x
();
// process update in "x"
void
updated_u
(
bool
init
=
false
);
// process update in "u", if init all possible updates are made
void
updated_v
(
bool
init
=
false
);
// process update in "v", if init all possible updates are made
void
assemble_M
();
// assemble the mass matrix from the element mass matrices
void
assemble_D
();
// assemble the damping matrix from the element damping matrices
void
assemble_F
();
// assemble the force from the element forces
};
// ======================================== Element - Quad4 ========================================
namespace
SmallStrain
{
template
<
class
Material
>
class
Quad4
{
public:
// class variables
// ---------------
// constitutive response per integration point, per element
std
::
unique_ptr
<
Material
>
mat
;
// matrices to store the element data
cppmat
::
matrix
<
double
>
x
,
u
,
v
,
f
,
M
,
D
,
dNx
,
dNxi
,
w
,
vol
,
dNxi_n
,
w_n
,
vol_n
;
// dimensions
size_t
nelem
,
nip
=
4
,
nne
=
4
,
ndim
=
2
;
// signals for solvers
bool
changed_f
=
false
,
changed_M
=
true
,
changed_D
=
true
;
// class functions
// ---------------
// constructor
Quad4
(
std
::
unique_ptr
<
Material
>
mat
,
size_t
nelem
);
// recompute relevant quantities after "x", "u", or "v" have been externally updated
void
updated_x
();
void
updated_u
();
void
updated_v
();
// return volume average stress and strain
cppmat
::
cartesian2d
::
tensor2s
<
double
>
mean_eps
(
size_t
e
);
// of element "e"
cppmat
::
cartesian2d
::
tensor2s
<
double
>
mean_sig
(
size_t
e
);
// of element "e"
cppmat
::
cartesian2d
::
tensor2s
<
double
>
mean_eps
();
// of all elements
cppmat
::
cartesian2d
::
tensor2s
<
double
>
mean_sig
();
// of all elements
};
}
// namespace ...
// =================================================================================================
}}}
// namespace ...
// =================================================================================================
#endif
Event Timeline
Log In to Comment