Can you provide a sample of BEARING214 real constants as a func of omega?
I need to specify bearing stiffness/damping changes with rotational speed
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Here is an example. The file june8.txt has the actual bearing stiffnesses and damping values, but is proprietary. *dim,bearing_data,table,11,13,1,omegs *tread,bearing_data,june8,txt,,2 pi_2=2*acos(-1) *dim,kxx1,table,11,1,1,omegs *dim,kyy1,table,11,1,1,omegs *dim,kxx2,table,11,1,1,omegs *dim,kyy2,table,11,1,1,omegs *dim,kxx3,table,11,1,1,omegs *dim,kyy3,table,11,1,1,omegs *dim,kxy3,table,11,1,1,omegs *dim,kyx3,table,11,1,1,omegs *dim,dxx3,table,11,1,1,omegs *dim,dyy3,table,11,1,1,omegs *dim,dxy3,table,11,1,1,omegs *dim,dyx3,table,11,1,1,omegs *vfill,kxx1(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kyy1(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kxx2(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kyy2(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kxx3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kyy3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kxy3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,kyx3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,dxx3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,dyy3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,dxy3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *vfill,dyx3(1,0),ramp,2000*pi_2/60,250*pi_2/60 *do,_iii,1,11,1 kxx1(_iii,1)=bearing_data(2000+(_iii-1)*250,2) kyy1(_iii,1)=bearing_data(2000+(_iii-1)*250,3) kxx2(_iii,1)=bearing_data(2000+(_iii-1)*250,4) kyy2(_iii,1)=bearing_data(2000+(_iii-1)*250,5) kxx3(_iii,1)=bearing_data(2000+(_iii-1)*250,6) kyy3(_iii,1)=bearing_data(2000+(_iii-1)*250,9) kxy3(_iii,1)=bearing_data(2000+(_iii-1)*250,7) kyx3(_iii,1)=bearing_data(2000+(_iii-1)*250,8) dxx3(_iii,1)=bearing_data(2000+(_iii-1)*250,10) dyy3(_iii,1)=bearing_data(2000+(_iii-1)*250,13) dxy3(_iii,1)=bearing_data(2000+(_iii-1)*250,11) dyx3(_iii,1)=bearing_data(2000+(_iii-1)*250,12) *enddo /prep7 etlist et,201,214,,,1 et,202,214,,,1 et,203,214,,,1 ! Unsymmetric option et,204,14,,3! uz spring et,205,14,,3 ! Table Input of omega-dependent bearing properties !!! Bearing 1 - Primary Ball Bearing r,301,%kxx1%,%kyy1% !!! Bearing 2 - Primary Ball Bearing r,302,%kxx2%,%kyy2% !!! Bearing 3 - Journal Bearing r,303,%kxx3%,%kyy3%,%kxy3%,%kyx3%,%dxx3%,%dyy3% rmore,%dxy3%,%dyx3% |
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