zeroLengthND element in OpenSees 2.1.0

aminrahmani · Post by **aminrahmani** » Sat May 02, 2009 10:40 pm

Hi Silvia,

Is the zeroLengthND element available in the new version of OpenSees(ver. 2.1.0)?

I got the following warning:
“ZerolengthND:: --NDMaterial not of order 2 or 3”

Many Thanks

silvia · Post by **silvia** » Sun May 03, 2009 6:18 am

it seems to recognize the command.

aminrahmani · Post by **aminrahmani** » Sun May 03, 2009 7:36 am

Do you mean that we can't use it in the new version ?

silvia · Post by **silvia** » Sun May 03, 2009 9:37 am

i'll ask frank.

Post by **fmk** » Mon May 04, 2009 11:29 am

the element is there .. that is what is outputting the error message .. the error message is saying material is not of correct order.

aminrahmani · Post by **aminrahmani** » Wed May 06, 2009 10:31 pm

Hi Frank,

Thanks for your help. My question is that which materials are of order 2 and 3? I think Drucker-Prager model is of order 3, Isn’t it? I used the following command for zeroLengthND element, but I got the same message.

Element zeroLengthND $eleTag $iNode $jNode $matTag

What is the problem? Which type of material should I use?