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$  LS-DYNA Aerospace Working Group ERIF Test Case 12                           $
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$  Single Rotating Fan Blade                                                   $
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$  Reference:        http://awg.lstc.com                                       $
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$  Revision History: 1. 07/07/2014 first version                               $
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Description:     Comparison of results from different cpu architectures for a 
                 single rotating fan blade. The model demonstrates a stable 
                 solution for the rotation of a blade. Specifically, 
                 the blade internal and kinetic energy should remain 
                 constant as the blade is rotated. An implicit 
                 analysis is required first to apply the rotational
                 centrifugal load or preload to the blade. 
                 This analysis is followed by an explicit rotation 
                 of the blade where the stability of the blade internal
                 and kinetic energies are evaluated. The implicit 
                 and explicit analysis are completed in one-step 
                 analysis by using the keyword input 
                 *CONTROL_DYNAMIC_RELAXATION with IDRFLAG=5.
                 Comparison of results from different cpu architectures
                 for a basic model containing *CONSTRAINED_INTERPOLATION
                 and *CONSTRAINED_NODAL_RIGID_BODY keyword.

Status:          Accepted and currently part of the AWG ERIF Test Suite

Classification:  Example 

Keywords:        *CONTROL_DYNAMIC_RELAXATION
                 *CONTROL_ACCURACY
                 ...  

Units:	         in (length), s (time), lbf-s^2/in (mass),
                 psi (stress), lbf-in (energy)   

Model Data:	 4234 Nodes, 4104 shell elements    

Run time:        approx. total CPU time = 5 min. 20 sec. 
                 (Intel Xeon CPU E7- 8837 @ 2.67GHz / MPP / 4 cpu's)

