KOKO\Mimi
22c9d4435c
Implement MITC4 mass, constrained whitening, MKL FEAST, modal HDF5, and deterministic Value comparison. MSVC Debug builds; 394 of 395 tests pass. Original-model all-c residual and the documented S3 static contract conflict remain unresolved; this is an implementation checkpoint, not feature acceptance.
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
#ifndef FESA_ANALYSIS_EIGEN_REDUCTION_H_
|
|
#define FESA_ANALYSIS_EIGEN_REDUCTION_H_
|
|
|
|
#include <array>
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <vector>
|
|
|
|
#include "fesa/analysis/eigen_analysis_state.h"
|
|
#include "fesa/core/status.h"
|
|
#include "fesa/math/matrix.h"
|
|
#include "fesa/math/sparse_matrix.h"
|
|
#include "fesa/math/vector.h"
|
|
#include "fesa/model/model_types.h"
|
|
|
|
namespace fesa::eigen_internal {
|
|
|
|
/// @brief Stores one constraint-first nodal lift from whitened coordinates.
|
|
struct NodalLift {
|
|
Matrix positive_basis{6U, 0U};
|
|
Matrix scaled_lift{6U, 0U};
|
|
std::array<double, 6> null_vector{};
|
|
std::size_t offset{0U};
|
|
EigenNodalReductionRecord record{};
|
|
};
|
|
|
|
/// @brief Preserves the original sparse pencil and its checked nodal reduction.
|
|
struct EigenReduction {
|
|
SparseMatrix whitened_operator;
|
|
std::vector<NodalLift> nodes;
|
|
std::size_t free_count;
|
|
std::size_t null_count;
|
|
double characteristic_length;
|
|
double eta_mz;
|
|
double eta_kz;
|
|
double eta_pz;
|
|
};
|
|
|
|
/// @brief Applies actual component constraints before analytic null removal.
|
|
Result<EigenReduction> BuildEigenReduction(
|
|
const SparseMatrix& full_stiffness, const std::vector<Matrix>& nodal_mass,
|
|
const std::vector<ShellNodeInitialFrame>& frames,
|
|
const std::vector<std::uint8_t>& constraint_mask,
|
|
const std::vector<double>& nodal_drilling_stiffness,
|
|
double characteristic_length);
|
|
|
|
/// @brief Restores scaled global coordinates with constrained entries zero.
|
|
Vector RestoreScaledMode(const EigenReduction& reduction,
|
|
const Matrix& whitened_vectors, std::size_t column);
|
|
|
|
/// @brief Applies the assembled nodal mass in physical global coordinates.
|
|
Vector MultiplyNodalMass(const std::vector<Matrix>& nodal_mass,
|
|
const Vector& vector);
|
|
|
|
} // namespace fesa::eigen_internal
|
|
|
|
#endif // FESA_ANALYSIS_EIGEN_REDUCTION_H_
|