! TITLE: retainer_od_race.parm (AAAV) ! !--------------------------------------------------------------------------- ! Rev - 10/31/2002 D. Edwards !--------------------------------------------------------------------------- ! ! Analysis of upper azimuth bearing retainer to determine proper clearance ! and thickness to achieve desired preload on outer DT bearing races. ! ! Assembly: CU01715097 prototype machined and sleeved to use DT bearings. ! !---------------------- a.) Title and Units Declaration -------------------- ! /title,Upper Azimuth Bearing DT Bearing Retainer ! /units,bin ! !--------------------- b.) Part Name Selection Variable -------------------- ! name='ring' arry_nam='ring' ! !--------------------------- c.) Model C.S. Names -------------------------- ! ct_name='CS_0' ! cartesian cyl_name='CS_1' ! cylindrical sph_name='CS_2' ! spherical ! !----------------------- d.) Material and Element Type --------------------- ! ! Material Properties mat_select,'c416' ! et,1,plane42,0,0,1 ! Axisymmetric et,2,contac52,,,1,0 ! Bearing race contact - no gap et,3,contac52,,,1,1 ! Sleeve interface with gap based on geomtery mp,MU,2,0 !KN, GAP, START, KS, REDFACT, NX, NY, NZ r,2,1e8,0 ! !--------------------------- e.) Model Parameters -------------------------- ! Tbolt=15 ! [in-lb] Screw torque gapS=.005 ! Gap size between retainer ring and sleeve r1=1.950 r2=2.470 r3=1.840 ri=2.242 ! Annular area for applied pressure ro=2.393 t1=.200-.070 t2=.187-.070 Fi=Tbolt/.2/.138 ! [lb] Screw tension Nbolt=16 ! Number of bolts Ft=Fi*Nbolt ! Total load on retainer ring At=pi*(ro*ro-ri*ri) ! Area of applied pressure Pt=Ft/At ! Contact pressure on annulus about screws ! !------------------------ f.) Model C.S. Coordinates ----------------------- ! acs=0 ! active coordinate system ! xc=0 ! x coordinate center yc=0 ! y coordinate center zc=0 ! z coordinate center ! rotxyc=0 ! xy rotation rotyzc=0 ! yz rotation rotzxc=0 ! zx rotation ! !---------------------------------------------------------------------------