File numerics/src/FrictionContact/GlobalFrictionContactProblem.h¶
Go to the source code of this file
Definition of a structure to handle global friction-contact (2D or 3D) problems.
Functions
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GlobalFrictionContactProblem *globalFrictionContactProblem_new(void)¶
creates an empty GlobalFrictionContactProblem
- Returns
a pointer to a GlobalFrictionContactProblem
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void globalFrictionContact_display(GlobalFrictionContactProblem *problem)¶
displays the problem onto screen
- Parameters
problem – [in] to be displayed
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int globalFrictionContact_printInFile(GlobalFrictionContactProblem *problem, FILE *file)¶
Saves problem struct into a file.
- Parameters
problem – [in] structure
file – [in] file descriptor
- Returns
file status (1 if everything has worked properly)
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int globalFrictionContact_printInFileName(GlobalFrictionContactProblem *problem, const char *filename)¶
Saves problem struct into a file.
- Parameters
problem – [in] structure
filename – [in] name of the input file
- Returns
file status (1 if everything has worked properly)
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GlobalFrictionContactProblem *globalFrictionContact_newFromFile(FILE *file)¶
read a GlobalFrictionContactProblem from a file descriptor
- Parameters
file – descriptor
- Returns
problem the problem to read
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GlobalFrictionContactProblem *globalFrictionContact_new_from_filename(const char *filename)¶
read a GlobalFrictionContactProblem from a file (.dat or hdf5 if fclib is on) from its filename
- Parameters
filename – the name of the input file
- Returns
problem the problem to read
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void globalFrictionContact_free(GlobalFrictionContactProblem *problem)¶
Release memory for the problem structure.
- Parameters
problem – [inout] global-Friction problem structure to be freed
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GlobalFrictionContactProblem *globalFrictionContact_copy(GlobalFrictionContactProblem *problem)¶
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int globalFrictionContact_computeGlobalVelocity(GlobalFrictionContactProblem *problem, double *reaction, double *globalVelocity)¶
Compute the global velocity given the reaction.
- Parameters
problem – [in] to be considered
reaction – [in] the reaction, can be null if there is no contacts
globalVelocity – [out] the global velocity computed by inverting the system.
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FrictionContactProblem *globalFrictionContact_reformulation_FrictionContact(GlobalFrictionContactProblem *problem)¶
Refomulation into local problem.
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struct GlobalFrictionContactProblem¶
- #include <>
The structure that defines a Friction-Contact (3D or 2D ) problem.
Public Members
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int dimension¶
dimension \( d=2 \) or \( d=3 \) of the contact space (3D or 2D )
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int numberOfContacts¶
the number of contacts \( n_c \)
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NumericsMatrix *M¶
\( M \in {\mathrm{I\!R}}^{n \times n} \), a matrix with \( n\) stored in NumericsMatrix structure
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NumericsMatrix *H¶
\( {H} \in {{\mathrm{I\!R}}}^{n \times m} \), a matrix with \( m = d n_c\) stored in NumericsMatrix structure
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double *q¶
\( {q} \in {{\mathrm{I\!R}}}^{n} \)
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double norm_q¶
norm-2 of q
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double *b¶
\( {b} \in {{\mathrm{I\!R}}}^{m} \)
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double norm_b¶
norm-2 of b
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double *mu¶
\( {\mu} \in {{\mathrm{I\!R}}}^{n_c} \), vector of friction coefficients ( \( n_c = \) numberOfContacts)
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NumericsMatrix *M_inverse¶
\( M^{-1} \in {\mathrm{I\!R}}^{n \times n} \), a matrix with \( n \) stored in NumericsMatrix structure
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void *env¶
opaque environment, solver specific
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int dimension¶