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Birth and Death Elements

Experimenter
Experimenter

Hi,

 

I am trying to use birth and death elements in an analysis.

 

I want an element to be "Born" on the first time step and "Killed" in the second time step.

 

I am using the NX Nastran advance nonlinar solver and have the set the solver up as shown below:

 

Analysis 1.PNG

Analysis 2.PNG

However, when I run the analysis I get the following errors:

 

Error 1.PNGError 2.PNG

 

Can anyone advise where I have gone wrong with the solver?

 

Any help woul be greatly appreciated.

 

Cheers,

Craig

5 REPLIES

Re: Birth and Death Elements

Siemens Phenom Siemens Phenom
Siemens Phenom

What version of Femap are you using? Do you have more than one version Femap installed? I do not believe this error is a result of setting up birth/death. 

 

Regards,

 

Joe

Re: Birth and Death Elements

Experimenter
Experimenter

Hi Joe,

 

Thanks for the response, I only have Femap V11.3 installed. 

 

Cheers,

Craig

Re: Birth and Death Elements

Experimenter
Experimenter

I get the same error. Does anyone know if it's a license problem?

Re: Birth and Death Elements

Siemens Phenom Siemens Phenom
Siemens Phenom

I have attached a neu file with an example of element birth/death set up. This is not supported by Femap, it must be added manually using EDBSET case control and EBDSET bulk data entries.

 

Please make sure you have the advanced nonlinear solver option by selecting Help/ About/Options

 

2017-09-14 10_31_11-About Femap with NX Nastran.png

Re: Birth and Death Elements

Experimenter
Experimenter
Hello Joe! Thank you for the fast response. It looks like my problem is the lack of license.

Best regards!