The push rods on the suspension of the Pitt Formula SAE race car are Chome-moly steel (E = 29,000 ksi, o, = 45 ksi) rods that are 14 in long. They are hollow, with an outside diameter of 0.5 in and a 0.020-in wall thickness, and are pinned at each end. Determine (a) The slenderness ratio. (b) The smallest slenderness ration for which the Euler buckling load equation is valid. (c) The Euler buckling load.

A hollow steel [E = 30,000 ksi] tube (1) with an outside diameter of 3.50 in. and a wall thickness of 0.219 in. is fastened to a solid 2.00-in.-diameter aluminum [E = 10,000 ksi] rod. The assembly is attached to unyielding supports at the left and right ends and is loaded as shown. Assume P=18 kips, Q=10 kips, L1=6 ft, L2=7 ft, and L3=7 ft.  (A) Calculate the cross-sectional area of steel tube (1), A1, and the cross-sectional area of the aluminum rods (2) and (3). in inches squared (B) Find the force in the steel tube (1), F1, and the forces F2 and F3, which are the forces in the aluminum rods.  Use the correct sign for each force.  By convention, a tension force is positive, and a compression force is negative. IN kips (C) Find σ1, σ2, and σ3, the normal stresses in members (1), (2), and (3), respectively. By convention, a tension stress is positive, and a compression stress is negative. IN KSI (D) Determine δ1 and δ2, the deformations of members (1) and (2), respectively.  By…

01: A hollow steel tube (1) with an outside diameter of 2.75 in. and a wall thickness of 0.25 in, is fastened to a solid aluminum rod (2) that has a 2 in. diameter and a solid aluminum rod (3) that has a 1.375 in. diameter (E -30,000 ksi, E-10,000 ksil. The bar is loaded as shown in figure below, Determine: (1) the displacement of point D with respect to the fixed support at A. (2) the maximum normal stress in the entire axial assembly. (3) the normal strain in the steel tube (1). 34 kips 18 kips 25 kips 18 kips 34 kips 60 in. 40 in. 30 in.

(13) A spring has an overall length of 44.0in & sustains a load of 15,000lb @ its center. The spring has three full-length leaves & 15 graduated leaves with a central band 4.0in wide. All leaves are to be stressed to 60,000psi when fully loaded. The ratio of total spring depth to width is to be approximately 2.0. Determine: (a) the width & thick ness of the leaves; (b) the initial space that must be provided between the full length & the graduated leaves before the band is applied; (c) What load is exerted on the band after the spring is assembled?