A spherical gas-storage tank with an inside diameter of 7.3m is being constructed to store gas under an internal pressure of 1.23MPa. The tank will be constructed from steel that has a yield strength of 285MPa. If a factor of safety of 2.7 with respect to the yield strength required, determine the minimum wall thickness tmin required for the spherical tank. Answer in mm, rounded-off to two decimal places.

A compound shaft consists of a titanium alloy [G = 6,200 ksi] tube (1) and a solid stainless steel [G = 11,500 ksi] shaft (2). Tube (1) has a length of L1 = 50 in., an outside diameter of D1 = 2.55 in., and a wall thickness of t1 = 0.160 in. Shaft (2) has a length of L2 = 52 in. and a diameter of d2 = 1.35 in. If an external torque of TB = 520 lb·ft acts at pulley B in the direction shown, calculate the torque TC required at pulley C so that the rotation angle of pulley C relative to A is zero.

What is the most probable cause of this casing failure? 0253 The pipe was under tension, decreasing the burst resistance. The pipe was under tension, decreasing collapse resistance. The axial stress in the pipe have exceeded the yield stress. The pipe failed due to excessive pressure from the interior.

A beam is subjected to equal bending moments of M2 = 56 kip-ft. The cross-sectional dimensions are b1 = 8.3 in., d1 = 1.4 in., b2 = 0.50 in., d2 = 6.6 in., b3 = 2.2 in., and d3 = 2.3 in. Determine: (a) the centroid location (measured with respect to the bottom of the cross-section), the moment of inertia about the z axis, and the controlling section modulus about the z axis. (b) the bending stress at point H. Tensile stress is positive, while compressive stress is negative. (c) the bending stress at point K. Tensile stress is positive, while compressive stress is negative. (d) the maximum bending stress produced in the cross section. Tensile stress is positive, while compressive stress is negative. y K M2 M, d2 b2 d3 b3 Answer: (a) y= i in. 1z= i in.4 S= i on.3 (b) OH = i ksi ( c) σκ-i ksi (d) Omax = i ksi

Mechanics of deformable bodies.

P14.2 A spherical gas-storage tank with an inside diameter of 6.5 m is being constructed to store gas under an internal pressure of 1.25 MPa. The tank will be constructed from steel that has a yield strength of 420 MPa. If a factor of safety of 3.0 with respect to the yield strength is required, determine the minimum wall thickness required for the spherical tank.

Consider a pressure vessel that is made of two half-spherical domes with 1 ft in diameter, and the cylinder portion is 3 ft in length and is subjected to 100 psi pressure. The maximum tensile strength of the material is 55 ksi. The factor of safety for this design is 1.5.   Problem: Determine the minimum thickness for this design.