On Mon, Dec 2, 2013 at 4:02 PM, Geoffrey Irving <[email protected]> wrote:
> For simulations of bending shells, I'm going to need access to second > derivatives of both primal and dual basis functions. This means > versions of f0,f1 that take second derivatives, plus f2 for inner > products with the dual second derivatives. > > Have you thought about how to fit this into the current code without > interfering with speed when the second derivatives aren't required? > It also increases the relevance of Jed's note that material models and > material field evaluations might ideally be shared across evaluations > at the same quadrature point. I.e., merging f1 and f2 into a single > call might avoid redundancy. > > I haven't used actual shell elements before (all the bending > simulations I've done used ad-hoc hinge forces), so any advice about > element choice would be great. Are the default quadratic elements a > good choice? > So these elements are C1? I would have a tendency to fall back on mixed formulations or interior penalty (I don't understand these) formulations for this. Then C0 elements are alright. Jed, have you used any of these? Matt > Thanks, > Geoffrey > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
