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- S-3) In order to carry the 100 KN force safely on the frame in Figure 3, find the diameters of the B and D pins (B single cut D double cut), the thickness t of the BD bar. (Safety Cat.(S)=2, T = 250 Nmm2 o -350 N/mm2) 40.a mm 300 mm ТАКE a-9,6 60.a mm 50 mm D Yatağı 100 mm C t mm |F=100 kNThe figure below shows two plates connected by two rivets. The plates are made from aluminum 6061-T6 and the rivets are made from aluminum 2014-T4. Evaluate the maximum allowable force on the connection to meet the following design critoria the shoar stross in a rivot cannot excced 1/4 of the ultimate strongth in shoar. 75 mm 38 mm 38 mm 12 mm dia -9 mm The figure below shows two plates connected by two rivets. The plates are made from aluminum 6061-T6 and the rivets are made from aluminum 2014-T4. Evaluate the maximum allowable force on the connection to meet the following design criteria the tensile stress in the plates cannot exceed 1/3 of the yield strength. mm 75 mm 38 mm 38 mm 12 mm dia. The figure below shows two plates connectd by two rivets. The plates are made from aluminum 6061-T6 and the rivets are made from aluminum 2014-14. Evaluate the maximum allowable force on the connection to moet the following design criteria the bearing stress on either the plates or the rivets…E T-50" 60 C Force ? Suppose rod AB is hinged to a fixed wall. Rope CDE is attached to the rod at C, 4 from the hinge. The rope passes over a pulley D. which is mounted on another fixed wall. The angle ACD is 60 degree. The other end of the rope is connected to a mechanism (not shown), which requires 50 lb. force to be actuated. How much downward hand force will be required at point B. 5' from the hinge, to actuate the mechanism? When the hand force is applied, what reaction force will be developed in hinge A? Assume the rod is weightless, rigid and amply strong and the rope is flexible and amply strong.
- Data: r=0.25 inch, d=0.4 pig and h=0.5 inch, wi=2.5 inch and w= 1.5 inch.The forces fluctuate between a tension of 14 Kips and a compression of 5 Kips. It is made of AISI 1018 CD. steel.The connecting element in the figure is failing. What is the most critical point and give recommendations to improve the situation.A 3/8-18 grade 8 bolt has 800 pounds of force pulling on it. Find the tensile force, the thread stripping strength for the needed length of engagement and the factor of safety for the bolt with that amount of force.The aircraft link is made from an A992 steel rod. (Figure 1) Figure < 1 of 1 18 in.
- An inflatable structure used by a traveling circus has the shape of a half-circular cylinder with closed ends (see figure). The fabric and plastic structure is inflated by a small blower and has a radius of 40 ft when fully inflated. A longitudinal scam runs the entire length of the "ridge" of the structure. If the longitudinal scam along the ridge tears open when it is subjected to a tensile load of 540 pounds per inch of seam, what is the factor of safety n against tearing when the internal pressure is 0,5 psi and the structure is fully inflated?A bicycle chain consists of a series of small links, where each are 12 mm long between the centers of the pins (see figure). You might wish to examine a bicycle chain and observe its construction. Note particularly the pins, which have a diameter of 2.5 mm. To solve this problem, make two measurements on a bicycle (see figure): (1) the length L of the crank arm from main axle to pedal axle and (2) the radius R of the sprocket (the toothed wheel, sometimes called the chainring). (a) Using your measured dimensions, calculate the tensile force T in the chain due to a force F = 800 N applied to one of the pedals. (b) Calculate the average shear stress T averin the pins.A lifeboat hangs from two ship's davits. as shown in the figure. A pin of diameter d = 0.80 in. passes through each davit and supports two pulleys. are on each side of the davit. Cables attached to the lifeboat pass over the pulleys and wind around winches that raise and lower the lifeboat. The lower parts of the cables are vertical and the upper parts make an angle a =15° with the horizontal. The allowable tensile force in each cable is 1800 lb, and the allowable shear stress in the pins is 4000 psi. If the lifeboat weighs 1500 lb, what is the maximum weight that can be carried in the lifeboat?
- Pipe 2 has been inserted snugly into Pipe I. but the holes Tor a connecting pin do not line up; there is a gap s. The user decides to apply either force P:lo Pipe I or force P-, to Pipe 2, whichever is smaller. Determine the following using the numerical properties in the box. (a) If only P{is applied, find Pt{tips} required to close gap s; if a pin is then inserted and Ptremoved, what are reaction forces RAand RBfor this load case? (b) If only P2is applied, find P2{kips) required to close gap a; if a pin is inserted and P2removed, what are reaction forces R^ and RBfor this load case? (c) What is the maximum shear stress in the pipes, for the loads in parts (a) and (b)? (d) If a temperature increase IT is to be applied to the entire structure to close gaps{instead of applying forces Ptand P2), find the AT required to close the gap. If a pin is inserted after the gaphas closed, what are reaction forces .''.', and RBfor this case? (e) Finally, if the structure (with pin inserted) then cools to the original ambient temperature, what are reaction forces Rtand PRepeat Problem 11.2-3 assuming that R= 10 kN · m/rad and L = 2 m.A small lab scale has a rigid L-shaped frame ABC consisting of a horizontal arm AB (length b = 10 in.) and a vertical arm BC (length c = 7 in.) pivoted al point B. The pivot is attached to the outer frame BCD that stands on a laboratory bench. The position of the pointer al C is controlled by a spring, Jt = 5 lb/in., that is attached to a threaded rod. The pitch of the threads is p = 1/16 in. Under application of load W, 12 revolutions of the nut are required to bring the pointer back to the mark. Calculate the weight W.