Re: [deal.II] Re: Serendipity elements

2019-08-05 Thread Jonathan Russ
Professor Bangerth - Okay thank you for your advice! I'll take a look at the FE_Poly class as you suggest. Thanks again, Jonathan On Sun, Aug 4, 2019 at 9:14 PM Wolfgang Bangerth wrote: > On 8/4/19 5:47 PM, Jonathan Russ wrote: > > > > Thank you for your reply. The shape functions of the

Re: [deal.II] Re: Serendipity elements

2019-08-04 Thread Wolfgang Bangerth
On 8/4/19 5:47 PM, Jonathan Russ wrote: > > Thank you for your reply. The shape functions of the "quadratic" serendipity > elements are very similar to the FE_Q(2) elements except they are derived > without any interior nodes (i.e. in 2D the interior node is removed and the > shape functions

Re: [deal.II] Re: Serendipity elements

2019-08-04 Thread Jonathan Russ
Professor Bangerth - Thank you for your reply. The shape functions of the "quadratic" serendipity elements are very similar to the FE_Q(2) elements except they are derived without any interior nodes (i.e. in 2D the interior node is removed and the shape functions are simple polynomials with 8

Re: [deal.II] Re: Serendipity elements

2019-08-04 Thread Wolfgang Bangerth
On 8/3/19 1:17 PM, Jonathan Russ wrote: > > How difficult would it be to add serendipity elements to dealii? They are > very > useful in solid mechanics applications and can greatly reduce the > computational cost. Is it very difficult to add an element that is the same > is > FE_Q but

[deal.II] Re: Serendipity elements

2019-08-03 Thread Jonathan Russ
Hello - How difficult would it be to add serendipity elements to dealii? They are very useful in solid mechanics applications and can greatly reduce the computational cost. Is it very difficult to add an element that is the same is FE_Q but without the few extra basis functions when quadratic