Question

i need an ansower to every part of this quastion

(a) Design a central annular-groove pressure-fed bearing with an l/d ratio of 0.5, using SAE grade 20 oil, the lubricant supplied at 30 psig. The exterior oil cooler can maintain the sump temperature at 120°F for heat dissipation rates up to 1500 Btu/h. The load to be carried is 900 Ibf at 3000 rev/min. The groove width is 14 in. Use nominal journal diameter d as one design variable and c as the other. Use Trumpler's criteria for your adequacy assessment. (b) Repeat the design problem in (a) using the nominal bushing bore B as one decision variable and the radial clearance c as the other. Again, Trumpler's criteria to be used. (c) For part (a) a satisfactory design is: d 200000 ib 2.005000 in Double the size of the bearing dimensions and quadruple the load to 3600 lbf. (i) Analyze the scaled-up bearing for median assembly. (ii) Compare the results of a similar analysis for the 2-in bearing, median assembly.

Answer 1

ven daa on 20 Absoluk viscosity i) p 30 pig 206843 paa teat diss 300 0 Co efficient of fichon o0043 2

tHeat eneml 0.0 .89C ver) :0.3556m

tHeat eneml 0.0 .89C ver) :0.3556m

ven daa on 20 Absoluk viscosity i) p 30 pig 206843 paa teat diss 300 0 Co efficient of fichon o0043 2

ven daa on 20 Absoluk viscosity i) p 30 pig 206843 paa teat diss 300 0 Co efficient of fichon o0043 2