Gravity.h

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#pragma once
 
#include "BaseLib/StrongType.h"
#include "SolidDensity.h"
 
namespace ProcessLib::SmallDeformation
{
template <int DisplacementDim>
using VolumetricBodyForce =
    BaseLib::StrongType<GlobalDimVector<DisplacementDim>, struct GravityTag>;
 
template <int DisplacementDim>
struct GravityModel
{
    explicit GravityModel(
        Eigen::Vector<double, DisplacementDim> const& specific_body_force)
        : specific_body_force_(specific_body_force)
    {
    }
 
    void eval(SolidDensity const& rho_SR,
              VolumetricBodyForce<DisplacementDim>& out) const;
 
private:
    // TODO (naumov) Do we need to store this for each integration point?
    Eigen::Vector<double, DisplacementDim> const specific_body_force_;
};
 
extern template struct GravityModel<2>;
extern template struct GravityModel<3>;
}  // namespace ProcessLib::SmallDeformation