nThe system of linear equations for statics is [K]{x} = {F} where x is the vector of unknown displacements.nThe stiffness matrix [K] includes the strain-displacement equation, the elastic stress-strain equation, and the equation of static equilibrium.nAfter solving the system of equations, the displacements become known and the strain-displacement equation is used to recover the strains and the stress-strain equation is used to recover the stress.n