Question

Problem: The symmic brake shown in the figurc has a width of 30 nm with a mcan friction cocfficicat of 0.25 N' ite that 1.-150 min, .:ー200 mm, 15-200 min and raclius or the clrinn is 150 mm. lir an ecimated acuting lce ol 5CMI N lixeh hrake, enine: ) The maxim essTeath she b) Thc total brake toque capacity c Commeut on the sclf-cncrgizing bebavior of cach shoc し2 45 Rntation L2

The symmetric brake shown in the figure has a width of 30 mm with a mean friction coefficient of 0.25.
Note that
L 150 mm 1
= , L 200 mm 2
= , L 200 mm 3
=
and radius of the drum is 150 mm. For an estimated
actuating force of F=500 N for each brake, determine:
a) The maximum pressure on each shoe
b) The total brake torque capacity
c) Comment on the self – energizing behavior of each shoe.

Comment is very important

Answer 1

Thursday 12 April 2018 Heek 15 10 οι Per 15 16 ぴーこ300 mm 17 μこ 0.zs 18 socethe Dongle 19 vilaeudt him 20 2x9+Sinl80 & THINGS TO DO APRIL 2018 3-14 + 031 8910 11 12 13 1 151617 192021 22 23 24 25 26 27 29 30

2 13 riday ek 15 Week 1s April 2018 Eguirdent coe6b.uut %6-dim A"こ 0.314 . Takin mmed ahout Fulcrun o, 262 10 13 13 儿' D:318 15 16 17 19 20 o:318 21 THINGS To DO MAY 2018 -7 91011 12 13 14 15 16 17 18 19 20 21 22 23 24 2s 26 728 29 30 31

Saturday 14 16 April 2018 Week 15 Week 104-261 Sinhala & Tamil New Year (Aluth Avurudda)/Vaisakhi/Vishu (Sri Lanka/ India) 10 393-26304x IS O 10 Maximum ?ressurt on each sale. orone choe e) Tota/ Axa Rejected b 14 15 15 16 w ha unday Sida % sho-e Bengali New Year / Masadi (India) o:318 10 Similor RNa--Ft, 392.38 , l235·구) 13 n each Jtote Ph and Pu THINGS TO APRIL 2018 8 910 11 12 1 15 16 17 18 19 20

4 16 Monday ek 1s April 2018 Week 16 106-259 Appointments 839 3yO. 0 093 N/mi 兵 10 10 123S-78-0.13구사 12 For el energiziny ー,brakes , Conditim. 14 where χ : 12 .. 200 15 16 kulcrum and Point o 17 18 19 aud drum 20 we 200入。 Certainly The aku a sel ee MAY 2018 THINGS To DO 8 9 10 12