CS838_28_Sep_2011

Elementsms each particle restlength per each spring

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Unformatted text preview: onst ARRAY_VIEW<TV>& X,ARRAY<TV>& force); void Add_Damping_Forces(const ARRAY_VIEW<TV>& X,const ARRAY_VIEW<TV>& V, ARRAY<TV>& force); void Add_External_Forces(ARRAY<TV>& force); T Maximum_Dt(); void Write_Output(const int frame); void Set_Kinematic_Positions(const T time,ARRAY_VIEW<TV>& X); void Set_Kinematic_Velocities(const T time,ARRAY_VIEW<TV>& V); void Clear_Values_Of_Kinematic_Particles(ARRAY<TV>& array); }; } CS838 Advanced Modeling and Simulation namespace PhysBAM{ template<class T> class SIMULATION_LAYOUT { public: typedef VECTOR<T,3> TV; const STREAM_TYPE stream_type; template<class T> T onst int n; c SIMULATION_LAYOUT<T>::Maximum_Dt() // Number of particles in wire mesh { onst T youngs_modulus,damping_coefficient // Elasticity and damping coefficients c const maximum_dt=frame_time; T T wire_mass,wire_restlength; // Mass and length for entire wire ARRAY<T> mass,restlength; // Mass (per for(int s=1;s<=wire_curve->mesh.elements.m;s++){ each particle), restlength (per each spring) int p1,p2;wire_curve->mesh.elements(s).Get(p1,p2); GEOMETRY_PARTICLES<TV> particles; T spring_mass=1./(1./mass(p1)+1./mass(p2)); DEFORMABLE_GEOMETRY_COLLECTION<TV> collection; maximum_dt=std::min(maximum_dt,spring_mass*restlength(s)/damping_coefficient); maximum_dt=std::min(maximum_dt,damping_coefficient*restlength(s)/youngs_modulus); const int number_of_frames; // Total number of frames } const T frame_time; // Frame (snapshot) interval const T CFL_number; // CFL return CFL_number*maximum_dt; number (not to exceed 1) } SEGMENTED_CURVE<TV>* wire_curve; FREE_PARTICLES<TV>* wire_particles; SIMULATION_LAYOUT(const STREAM_TYPE stream_type_input); void Initialize(); void Add_Elastic_Forces(const ARRAY_VIEW<TV>& X,ARRAY<TV>& force); void Add_Damping_Forces(const ARRAY_VIEW<TV>& X,const ARRAY_VIEW<TV>& V, ARRAY<TV>& force); void Add_External_Forces(ARRAY<TV>& force); T Maximum_Dt(); void Write_Output(const int frame); void Set_Kinematic_Positions(const T time,ARRAY_VIEW<TV>& X); void Set_Kinematic_Velocities(const T time,ARRAY_VIEW<TV>& V); void Clear_Values_Of_Kinematic_Particles(ARRAY<TV>& array); }; } CS838 Advanced Modeling and Simulation namespace PhysBAM{ template<class T> class SIMULATION_LAYOUT { public: typedef VECTOR<T,3> TV; const STREAM_TYPE stream_type; template<class T> T onst int n; c SIMULATION_LAYOUT<T>::Maximum_Dt() // Number of particles in wire mesh { onst T youngs_modulus,damping_coefficient // Elasticity and damping coefficients c const maximum_dt=frame_time; T T wire_mass,wire_restlength; // Mass and length for entire wire ARRAY<T> mass,restlength; // Mass (per for(int s=1;s<=wire_curve->mesh.elements.m;s++){ each particle), restlength (per each spring) int p1,p2;wire_curve->mesh.elements(s).Get(p1,p2); GEOMETRY_PARTICLES<TV> particles; T spring_mass=1./(1./mass(p1)+1./mass(p2)); DEFORMABLE_GEOMETRY_COLLECTION<TV> collection; maximum_dt=std::min(maximum_dt,spring_mass*restlength(s)/damping_coefficient); maximum_dt=std::min(maximum_dt,damping_coefficient*restlength(s)/youngs_modulus); const int number_of_frames; // Total number of frames } const T frame_time; // Frame (snapshot) interval const...
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