­ Di p lo D Do ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­­ ­ ­ ­ ­­ ­ ­ ­ ­ ­ ­­ ­ ­ π ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ π ­ ­ ­­ ­ r2 r1– r2 r1 x y O x ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ π ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ Design of Machine Elements y F y F F y F F P CrVa ­ ­ ­P u G u Fos F F ­ y y ­ G ­Di Do Did d C­K d K K d FDK d d d d d dd d­ d d d D Did C D d K C C C ­ ­ ­ ­ F Outer spring 15 90 75 Inner spring FR = F1 + F2 = 261 1= 2 ­ ­­ ­ 400 F, N 300 200 100 0 10 20 30 40 50 60 y, mm ­ ­ ­ τ ­ ­ ­ ­ b ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ F = 3 kN h 2l = 1200 b ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ F 720 ­ ­ F F L LB l l Camber Spring eye U-Clips Main leaf Full length leaves Iraduated leaver Egg-shaped ends Central band 2F Ordinary round ends Squared end, tapered ­ b l F σ ­ b¢ b 2 b h ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ 2F Total depth = ih F L F ­ ­ ­ C= D l 2 B R R-C A R C L ­ ­ ­ ­ ­ ­ ­ ­ ­­ ­­­­ ­ ­ ­­ ­­ ­ ­ ­ ­ Front W = 30,800 Springs 1200 cg cg 2200 1200 2200 RF Front Rear RR Rear ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­­­ ­ ­ ­ ­­ ­ ­­ ­ ­ ­­ ­ ­ ­ ­ ­ ­­ ­ ­ ­ ­ ­ ­­ ­ ­ ­ ­ ­­ ­ ­ ­ ­ ­ Q 750 12.5 ­ ­ ­ ­ ­ Mechanical Springs Q FF CFl ib h P F CK d P ­ U Fy Fy U F y F ­ E G ­ ­ ­ U F 720 mm i l b h i d Do D Dod ­ Mechanical Springs L LB i d L LB b h if D d D Cd G ­ U L C ig K C C C i ifig E ­ U U = 3 kNm 1800 Fy U F y y Fl Eb h i g i f y F F F F F f Fl b h i g i f ­ ­ P=d ­ ­ ­ ­ ­ ­ Design of Machine Elements F K Mb c I A M Mt d d F t MbMt c I R D πd A= K Mt Mt DA Z M t K D d d D M LD y t EI L Di I d Z c E D C ­ d P K C P a P P ­ E Mt y ­ ­ ­ ­ ­ ­ ν
