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nara4838

Error % keeps increasing

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Hi, 

 

there are intersections in the "self dummy" contact- all intersections and penetrations should be removed before running the model.

Check and remove manually or automatically any initial intersections and penetration in your model by using Tool>> Penetration or in Hypercrash by Quality>>Check all solver interfaces. Please go through HM-3320: Penetration tutorial in Help Menu which shows fixing penetrations.

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New Feature in HW 2017 - Collision Detection Tool - Altair University

Try to run the attached solver deck. There are some other modeling issues remaining.

seatbelt_0000.rad

pohan likes this

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Negative Energy Error is dissipated from the system with:

-plastic deformation

-hourglass energy

-contact with friction

-contact intersection & penetration

Energy error.pdf

 

Open the run_nameT01 time history file in Hypergraph and plot the Global variable>Internal, Kinetic, Contact, Hourglass, Total energy.

See attached documents for details (from Introduction to Explicit Analysis using RADIOSS – A Study Guide)

Crash_Analysis_with_RADIOSS.pdf

 

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It gives me an error of Mass error Limit reached. 

 


205000  0.1025      0.5000E-06 NODE       30658  99.9%   3867.      0.1269E+06  0.2799E+05 -0.1302E+05   71.74    
     ANIMATION FILE: seatbelt_negative_energyA207 WRITTEN
206000  0.1030      0.5000E-06 NODE       30658  99.9%   3967.      0.1269E+06  0.2797E+05 -0.1297E+05   71.74    
     ANIMATION FILE: seatbelt_negative_energyA208 WRITTEN
207000  0.1035      0.5003E-06 NODE       31463  99.9%   4056.      0.1269E+06  0.2795E+05 -0.1292E+05   71.74    
     ANIMATION FILE: seatbelt_negative_energyA209 WRITTEN
208000  0.1040      0.5001E-06 NODE       31463  99.9%   4148.      0.1268E+06  0.2793E+05 -0.1287E+05   71.74    
 WARNING INTERFACE         10
 NODE      21756 DE-ACTIVATED FROM INTERFACE

MESSAGE ID :          207

 ** RUN KILLED : TOTAL MASS ERROR LIMIT REACHED
 

 

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