김경종
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
#pragma once
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#include <array>
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namespace fesa::elements {
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using Vector12 = std::array<double, 12>;
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using Matrix12 = std::array<double, 144>;
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using Vector3 = std::array<double, 3>;
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struct EulerBeam3DSection {
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double young_modulus;
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double shear_modulus;
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double area;
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double torsion_constant;
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double second_moment_y;
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double second_moment_z;
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};
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struct EulerBeam3DGeometry {
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Vector3 node1;
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Vector3 node2;
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Vector3 orientation;
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};
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Matrix12 euler_beam_3d_local_stiffness(double length, const EulerBeam3DSection& section);
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Vector12 euler_beam_3d_local_end_forces(double length,
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const EulerBeam3DSection& section,
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const Vector12& local_displacements);
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Matrix12 euler_beam_3d_global_stiffness(const EulerBeam3DGeometry& geometry,
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const EulerBeam3DSection& section);
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Vector12 euler_beam_3d_global_end_forces(const EulerBeam3DGeometry& geometry,
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const EulerBeam3DSection& section,
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const Vector12& global_displacements);
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} // namespace fesa::elements
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