MySources/beam.hpp

#ifndef BEAM_HPP
#define BEAM_HPP
#include <Eigen/Dense>
#include <assert.h>
#include <cmath>
#include <iostream>

struct RectangularBeamDimensions {
  float b;
  float h;
  RectangularBeamDimensions(const float &width, const float &height)
      : b(width), h(height) {
    assert(width > 0 && height > 0);
  }
  RectangularBeamDimensions() : b(0.01), h(0.01) {}
};

struct CylindricalElementDimensions {
  float od; // Cylinder outside diameter
  float
      id; // Cylinder inside diameter
          // https://www.engineeringtoolbox.com/area-moment-inertia-d_1328.html
  CylindricalElementDimensions(const float &outsideDiameter,
                               const float &insideDiameter)
      : od(outsideDiameter), id(insideDiameter) {
    assert(outsideDiameter > 0 && insideDiameter > 0 &&
           outsideDiameter > insideDiameter);
  }
  CylindricalElementDimensions() : od(0.03), id(0.026) {}
};

struct ElementMaterial {
  float poissonsRatio;
  float youngsModulusGPascal;
  ElementMaterial(const float &poissonsRatio, const float &youngsModulusGPascal)
      : poissonsRatio(poissonsRatio),
        youngsModulusGPascal(youngsModulusGPascal) {
    assert(poissonsRatio <= 0.5 && poissonsRatio >= -1);
  }
  ElementMaterial() : poissonsRatio(0.3), youngsModulusGPascal(7.5) {}
};

struct BeamProperties {
  float crossArea;
  float I2;
  float I3;
  float polarInertia;
  BeamProperties(const RectangularBeamDimensions &dimensions,
                 const ElementMaterial &material) {
    crossArea = (dimensions.b * dimensions.h);
    I2 = dimensions.b * std::pow(dimensions.h, 3) / 12;
    I3 = dimensions.h * std::pow(dimensions.b, 3) / 12;
    polarInertia = (I2 + I3);
  }
};

#endif // BEAM_HPP