feat(linear-static-mitc4-shell): step 9 - shell-analysis-state

include/fesa/results/result_records.hpp

@@ -5,6 +5,7 @@
 #include <array>
 #include <cstddef>
 #include <string>
+#include <vector>
 
 namespace fesa {
 
@@ -38,4 +39,45 @@ struct StressS11Row {
     std::string source;
 };
 
+enum class ShellMidsurfaceLocation {
+    gp1,
+    gp2,
+    gp3,
+    gp4
+};
+
+enum class ShellSectionPosition {
+    bottom,
+    middle,
+    top
+};
+
+struct ShellSectionStressRow {
+    ShellSectionPosition position;
+    double zeta;
+    std::array<double, 3> components;
+};
+
+struct ShellResultRow {
+    EntityIndex element;
+    ShellMidsurfaceLocation location;
+    std::array<double, 2> naturalCoordinates;
+    // Axis rows [e1,e2,e3], global-component columns.
+    std::array<std::array<double, 3>, 3> localFrame;
+    std::array<double, 8> generalizedStrain;
+    std::array<double, 8> sectionResultant;
+    // Fixed BOTTOM, MIDDLE, TOP order; components are [S11,S22,S12].
+    std::array<ShellSectionStressRow, 3> stress;
+};
+
+struct ShellStateCandidate {
+    std::vector<ShellResultRow> rows;
+    double physicalStrainEnergy{0.0};
+    // [FORCE_1,FORCE_2,FORCE_3,MOMENT_1,MOMENT_2,MOMENT_3].
+    std::array<double, 6> equilibrium{};
+    // [FREE_RESIDUAL_NORMALIZED,FORCE_BALANCE_NORMALIZED,
+    //  MOMENT_BALANCE_NORMALIZED].
+    std::array<double, 3> verificationMetrics{};
+};
+
 } // namespace fesa