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not getting results in sol101

Creator
Creator

hii,

 

   I started learning  NX advanced simulation and Iam not getting results in sol101 even i have did all the preprocessing work, in model check up also it was not showing any errors but still didn't getting the rersults it was showing "no results found"..could you please rectify this and help me for better understanding of NX.

 

Thnaks and Regards,

vijay

3 REPLIES 3

Re: not getting results in sol101

Gears Phenom Gears Phenom
Gears Phenom

By default Nastran output stored in *.op2 fines. Load it manualy after solution. If there is no op2 filesand no errors in f06 file, then you ask Nastran to export results in other format. Post here some simple example file.

Re: not getting results in sol101

Creator
Creator

Could you please explain what is the relevance of MAXRATIO and BAILOUT-1, is it inverting the triangular negative stiffness?. Some times, I do get results when I change the aforementioned parameters.

Re: not getting results in sol101

Gears Phenom Gears Phenom
Gears Phenom

Bailout - continue to solve after fatal error https://docs.plm.automation.siemens.com/tdoc/nx/12/nx_help#uid:id511216

MAXRATIO - increase maxratio if you have extreme stiffness difference between elements. For example 1mm plate of steel with E=2e11Pa and circular beam with diameter 10 m and E=1e18 Pa. Nsstran get error 9137 loke pivot, for nastran 1/machine zero - like in poorly constrained model is equal to neat infinite stiffness/0. Increase maxratio if you shure that model is constrained and problem is in extreme stiffness ratio. https://docs.plm.automation.siemens.com/tdoc/nx/12/nx_help#uid:id511266 for additional reading search about ill-conditioned matrices http://www.cs.uleth.ca/~holzmann/notes/illconditioned.pdf and do not use allmost rigid beams instead RBE2 elements. RBE2 element dont broke stiffness matrix, instead of spring with stiffness 1e20.