0 Ansi Grun that det us Consider that, bolt SAE class=8.8. d=29mm for diameter d -24mm. Tensile stress alea (U) - 353 mnt (from table s-D fá SAE class 8.8, Rusof storength ($p6001120. [from tabte 8-10). Proload fi=019 (A)(Sp) fe - 0.9(353)C600) fi 190620N. Load Varies o tof, from per Lood bolt FN N=no. boet g 1-2 load per bolt = f/2. 80 Pmax = F/2. § pmin=0 Belt will experience fleectuating forces Buch as formin = Omin+f; foman c Pmaxt fi where, C = Joint Constant, C- Kb Kytkm bolt joint stiffnes. km a member stiyness. g
w and (km = 316] Gireen, ko Kg +316 Mb G46 , 0.25 Po, from @ 40 fomin (0.25%0)+190620.- 1906200 foman = 60.25)(42)+190620. = 0,1256 +190620N. The Alternating Bless experienced by (fomax - Fomin)/2 a belt is, a At CO1267 +190820-190020112 353 ba 011256 353X2 ба 0.125F 706 a bolt is, The miar sbreas midrange experienced by (flomax & Fomin)/2 m At 60.125€ +190620 +190620)/2 353 0.125F +381240 706 The fatigue factor of safety is gireen by,
bo ng Se (Sut - 6;) Sutfat Selam-6) where, 6; At 190620 353 SCOMPa. and sut 830MPa. (from läble 8-117 Se - 129 MPa (from table 8-11]. 6 = 2Cgiven). So, Noco, South 2 = 1296830-540) 830 (0:125F 10.125F +381290 +129 706 706 -540 0.2939094 +0104568F+39320-139320=1296290) 0.339589 F = 37140 ft 37140/0.339589 F110162N f110.1626 Maxinurn value gt that would not cause eventual the bolts. gth fatigue