shi20396 chương 9

If you have a square area in which to place a fillet weldment pattern under bending, your objective is to place as much material as possible away from the x-axis. If your area is rectangular, your goal is the same, but the rankings may change. | Chapter 9 9-1 Eq. 9-3 F 5. 16 4 20 kip Ans. 9-2 Table 9-6 Tail kpsi f kip in 5 16 kip in F fl 4 kip Ans. 9-3 Table A-20 1018 HR Sut 58 kpsi Sy 32 kpsi 1018 CR Sut 64 kpsi Sy 54 kpsi Cold-rolled properties degrade to hot-rolled properties in the neighborhood of the weld. Table 9-4 Tall min min 58 32 min kpsi for both materials. Eq. 9-3 F F 5 16 4 kip Ans. 9-4 Eq. 9-3 V2F V2 32 t ------- ---------------- kpsi Ans. hl 5 16 4 2 P 9-5 b d 2 in a Primary shear Table 9-1 . V F Ty A 5 16 2 kpsi Chapter 9 247 Secondary shear Table 9-1 j d d 2 2 3 22 22 5 6 6 J 5 16 in4 t x Mry 7F 1 kpsi x y J P Maximum shear Tmax T Try t 2 F 2 kpsi Tall 20 F -------- kip Ans. P b For E7010 from Table 9-6 Tall 21 kpsi Table A-20 1 HR 1020 Bar Sut 55 kpsi HR 1015 Support Sut 50 kpsi Sy 30 kpsi Sy kpsi Table 9-5 E7010 Electrode Sut 70 kpsi Therefore the bar controls the design. Table 9-4 Sy 57 kpsi Tall min 50 min 15 11 11 kpsi The allowable load from Eq. 1 is Tall 11 F ----------- kip Ans. P 9-6 b d 2 in Primary shear Secondary shear Table 9-1 ty V F ----------------- 4 5 16 2 Ju M 2 23 in-3 u 6 6 J 5 16 in4 TTMix x y j 7F 1 ---- F 248 Solutions Manual Instructor s Solution Manual to Accompany Mechanical Engineering Design Maximum shear Tmax y 2 Wy tÇ 2 F 2 F kpsi F tl Ans. which is twice Tmax of Prob. 9-5. 9-7 Weldment subjected to alternating fatigue has throat area of A 6 60 50 60 721 mm2 Members endurance limit AISI 1010 steel Sut 320 MPa Se 320 MPa ka 272 320 -0 995 kb 1 direct shear kc shear kd 1 kf Sse 1 MPa Electrode s endurance 6010 Sut 62 427 MPa Se 427 215 MPa ka 272 427 -0 995 .