File kernel/src/simulationTools/FrictionContact.hpp¶
Go to the source code of this file
Fricton-Contact Non-Smooth Problem
Typedefs
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typedef int (*Driver)(FrictionContactProblem*, double*, double*, SolverOptions*)¶
Pointer to function of the type used for drivers for FrictionContact problems in Numerics.
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class FrictionContact : public LinearOSNS
- #include <>
Formalization and Resolution of a Friction-Contact Problem.
This class is devoted to the formalization and the resolution of friction contact problems defined by :
\[\begin{split} velocity = q + M reaction \\ \\ velocity \geq 0, reaction \geq 0, reaction^{T} velocity =0 \end{split}\]and a Coulomb friction law.
With:
\( velocity \in R^{n} \) and \( reaction \in R^{n} \) the unknowns,
\( M \in R^{n \times n } \) and \( q \in R^{n} \)
The dimension of the problem (2D or 3D) is given by the variable contactProblemDim and the proper Numerics driver will be called according to this value.
Construction: just set Numerics Solver id
Main functions:
Usage:
compute(time) formalize, solve and post-process the problem.
pre- and post-pro are common to all LinearOSNS and defined in this class.
For details regarding the available options, see Nonsmooth problems formulations and available solvers in users’ guide.
Public Functions
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FrictionContact(int dimPb = 3, int numericsSolverId = SICONOS_FRICTION_3D_NSGS)
constructor (solver id and dimension)
- Parameters
dimPb – dimension (2D or 3D) of the friction-contact problem (default: 3)
numericsSolverId – id of the solver to be used default (default: SICONOS_FRICTION_3D_NSGS)
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FrictionContact(int dimPb, SP::SolverOptions options)
constructor from a pre-defined solver options set
- Parameters
options – the options set
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inline virtual ~FrictionContact()
destructor
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inline int getFrictionContactDim() const
get the type of FrictionContact problem (2D or 3D)
- Returns
an int (2 or 3)
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inline const MuStorage getMu() const
get the vector mu, list of the friction coefficients
- Returns
a vector of double
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inline SP::MuStorage mu() const
get a pointer to mu, the list of the friction coefficients
- Returns
pointer on a std::vector<double>
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inline double getMu(unsigned int i) const
get the value of the component number i of mu, the vector of the friction coefficients
- Parameters
i – the component number (starting from 0)
- Returns
double value of mu
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void updateMu()
update mu vector
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inline void setNumericsDriver(Driver newFunction)
set the driver-function used to solve the problem
- Parameters
newFunction – function of prototype Driver
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virtual void initialize(SP::Simulation simulation) override
initialize the FrictionContact problem(compute topology …)
- Parameters
simulation – the simulation, owner of this OSNSPB
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SP::FrictionContactProblem frictionContactProblem()
- Returns
the friction contact problem from Numerics
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FrictionContactProblem *frictionContactProblemPtr()
- Returns
the friction contact problem from Numerics (raw ptr, do not free)
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int solve(SP::FrictionContactProblem problem = SP::FrictionContactProblem())
solve a friction contact problem
- Parameters
problem – the friction contact problem
- Returns
info solver information result
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virtual int compute(double time) override
Compute the unknown reaction and velocity and update the Interaction (y and lambda )
- Parameters
time – the current time
- Returns
int information about the solver convergence (0: ok, >0 problem, see Numerics documentation)
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virtual void display() const override
print the data to the screen
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virtual bool checkCompatibleNSLaw(NonSmoothLaw &nslaw) override¶
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ACCEPT_STD_VISITORS()¶
Protected Functions
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ACCEPT_SERIALIZATION(FrictionContact)¶