flipped sign of momentum term (SecondDerivativeNewmark.C) — this leads to convergence and looks good - at least optically…
Added FirstDerivativeNewmark kernel for including something like (velocity-dependent) friction
adding XCode project files (srry for that, but I want a backup :-)
fixed computation of kinetic energy with newmark scheme
fixed typo in comment
fixed sign in SecondOrderImplicitEulerWithDensity.C
added kinetic energy kernel for implicit euler scheme
adding newmark integrator run - somwhere in the energy there still ight be a factor of 2 missing between elastic and kinetic energy...