A support fitting is machined from 7075- T651 aluminum alloy plate, and is attached to a beam using 6 steel bolts as shown. The external loads are applied through a two-lug clevis configuration, and it is assumed that that each lug supports 60% of the applied external load. A fitting factor of 1.15 is to be applied to the lugs, and the bolts have a maximum allowable shear load of 1900 lbf. All dimensions are in inches. (a) Find the resultant force on each bolt in the connection. (b) Determine the design factor of safety for the lugs as well as the most highly loaded bolt in the connection. (c) Determine the design factor of safety for bearing at the most highly loaded bolt hole in the fitting.
A support fitting is machined from 7075- T651 aluminum alloy plate, and is attached to a...
Standard design practice, as exhibited by the solutions to Probs. 8-66 to 8-70, is to assume that the bolts, or rivets, share the shear equally. For many situations, such an assumption may lead to an unsafe design. Consider the yoke bracket of Prob. 8-61, for example. Suppose this bracket is bolted to a wide-flange column with the centerline through the two bolts in the vertical direction. A vertical load through the yoke-pin hole at distance B from the column flange...