Constrain Conditions Are Not Satisfied For 1 Joint Elements With Lag Mult Option
Hello Ansys Users,
I am working on pedal box analysis with Ansys Workbench 17.1. Applying 100
DaN load to pedal. In my model, there are contact non-linearities, material
nonlinearities and large deflection. I have achieved to get converge until
68 DaN.
Later, I am having warning "CONSTRAINT CONDITIONS ARE NOT SATISFIED
FOR 1 JOINT ELEMENTS WITH LAG MULT OPTION". Force , displacement and
moment criterias are met. But it gives warning and stop analysis. Previous
steps, I was having this warning. But ansys solve it inside substeps. Ansys
corresponded give me a suggestion to open rotation criteria. I have
activated this option with restart and problem is not solved same problem.
Is there anyway to diagnose which joint is problematic? How to solve this?
and what cause the problem.
Best Regards,
Master Student
Onur Erol
Uludag University
Under Analysis Settings set Identify Element Violations = Yes. Look at the .ndxxx files to get the element number that is causing problems. Then either look in the ds.dat or open the model in Mechanical APDL to figure out what joint corresponds to that element number. Figuring out what to do beyond this is always a bit of guesswork in my experience...
Phil Erisman
John Deere
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of ONUR EROL
Sent: Thursday, February 09, 2017 1:58 AM
To: xansys-temp@xansystest.info
Subject: [Xansys] Constrain Conditions Are Not Satisfied For 1 Joint Elements With Lag Mult Option
Hello Ansys Users,
I am working on pedal box analysis with Ansys Workbench 17.1. Applying 100 DaN load to pedal. In my model, there are contact non-linearities, material nonlinearities and large deflection. I have achieved to get converge until
68 DaN.
Later, I am having warning "CONSTRAINT CONDITIONS ARE NOT SATISFIED
FOR 1 JOINT ELEMENTS WITH LAG MULT OPTION". Force , displacement and
moment criterias are met. But it gives warning and stop analysis. Previous steps, I was having this warning. But ansys solve it inside substeps. Ansys corresponded give me a suggestion to open rotation criteria. I have activated this option with restart and problem is not solved same problem.
Is there anyway to diagnose which joint is problematic? How to solve this?
and what cause the problem.
Best Regards,
Master Student
Onur Erol
Uludag University
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Hello,
According to my experience using joints, this warning commonly occurs when
the joint "locks".
Check if both coordinate systems (reference and mobile) are correctly
aligned.
Regards
Hervandil Morosini Sant'Anna
Engenheiro de Equipamentos
Petrobras - INDUSTRIAL/PE/IEE - Chave: cji2
Tel: (21) 2166-4013 / Rota: 706-4013
e-mail: hmsantanna@petrobras.com.br
De: ONUR EROL 501625507@ogr.uludag.edu.tr
Para: xansys-temp@xansystest.info
Data: 09/02/2017 05:59
Assunto: [Xansys] Constrain Conditions Are Not Satisfied For 1 Joint
Elements With Lag Mult Option
Enviado por: "Xansys-temp" xansys-temp-bounces@xansystest.info
Hello Ansys Users,
I am working on pedal box analysis with Ansys Workbench 17.1. Applying 100
DaN load to pedal. In my model, there are contact non-linearities, material
nonlinearities and large deflection. I have achieved to get converge until
68 DaN.
Later, I am having warning "CONSTRAINT CONDITIONS ARE NOT SATISFIED
FOR 1 JOINT ELEMENTS WITH LAG MULT OPTION". Force , displacement and
moment criterias are met. But it gives warning and stop analysis. Previous
steps, I was having this warning. But ansys solve it inside substeps. Ansys
corresponded give me a suggestion to open rotation criteria. I have
activated this option with restart and problem is not solved same problem.
Is there anyway to diagnose which joint is problematic? How to solve this?
and what cause the problem.
Best Regards,
Master Student
Onur Erol
Uludag University
Xansys-temp mailing list
Xansys-temp@xansystest.info
http://xansystest.info/mailman/listinfo/xansys-temp_xansystest.info
If you are receiving too many emails from XANSYS please consider changing
account settings to Digest mode which will send a single email per day.
Please send administrative requests such as deletion from XANSYS to
xansys-mod@tynecomp.co.uk and not to the list
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