2) A machine frame is made of steel having Sy= 400 MPa and Say= 250 MPa. When loaded in a test fixture, the stresses were found to vary linearly with load. Two points on the surface were found to be most critical. With a 4-kN test load, stresses at these points were: point a, 0₁ = 200 MPa, 0₂ = 100 MPa; point b, 0₁ = 150 MPa, 0₂ = -100 MPa. Compute the test load at which the frame will experience initial yielding according to the (a) maximum-normal-stress theory, (b) maximum-shear-stress theory, and (c) maximum-distortion-energy theory. Discuss briefly the relative validity of each theory for this application. Considering all the information available, what is your best judgment of the value of the test load at which yielding would actually be expected to begin? σ1 02= 100 MPa a 02 0₂=-100 MPa 9 02 ₁= 200 MPa σ1 = 150 MPa

1. Use the tabulated solutions: Calculate the critical buckling stress for each of the flat plates shown. All are made from steel with E = 29 X 106 psi and v = 0.30 and are 3/16 inch thick. All edges are simply supported. (a) 48 in 48 in ' (b) 96 in 48 in (c) 48 in Note: if the tabulated solutions do not include the exact geometry ratio that you are looking for, interpolate between values in the table. 96 in

The assembly shown in figure (5) consists of two posts AD and CF made of a steel (Ast 1000 mm2 Est 200 Gpa) and one post BE made of aluminum (AAI = 1500 mm2, EAI = 73.1 Gpa). If a central load of (400+b) kN is applied to the rigid cap, determine the normal stress in each post. There is a small gap of 0.1 mm between post AD and post CF with the rigid member ABC. 400 kN -0.5 m- -0.5 m A B 0.4 m F

I need it handwritten and correct or skip please only handwritten handwritten handwritten handwritten otherwise dislikfor sure

The 10-mm-diameter steel bolt in (Figure 1) is surrounded by a bronze sleeve. The outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. Est = 200 GPa, Ebr 100 GPa. Figure P P 10 mm -20 mm Part A If the bolt is subjected to a compressive force of P = 18.0 kN, determine the magnitude of the average normal stress in the steel. Express your answer to three significant figures and include appropriate units. Ost= Submit Part B Obr = Submit μÀ Value Provide Feedback Request Answer If the bolt is subjected to a compressive force of P = 18.0 kN, determine the magnitude of the average normal stress in the bronze. Express your answer to three significant figures and include appropriate units. μÅ Value Units Request Answer ? Units ?

Attempt only if you are sure.

Question 1. P T The figure (not drawn to scale) shows a cylindrical column submitted to a combined load: a compression of and torsion. Given column diameter d = 29 mm, compressive load p = 110 kN, and torque T = 500 N.m, calculate the maximum shear stress Tuast and the Von Mises stress ov Enter your answers in the boxes below, correct to one decimal place. The answers are acceptable within a tolerance of 1 MPa. Tmax [ MPa MPa OVM:

Two vertical steel rods support the rigid bar as shown. Initially, the rods are stress-free. Given the data below, determine the stress of rods A and B after the 20 kN load is applied. Neglect the weight of the bar and use E = 200 GPa for steel. L= 3 m D = 3.5 mm A. Stress of rod A (MPa) B B. Stress of rod B (MPa) C. At what temperature AT change would the stresses for both rods be equal? Use a = 11.7 L= 4 m x 10-6 mm/mmC° (C°) D = 5 mm 4m 2m 2m 20 kN

Determine the allowable stress in last example if the factor of safety is 2.5.

A tie rod of ¼ inch diameter is used to hold a plaster wall in place. The tensile stress in the rod caused by load P is 20 ksi.  Find the diameter “d” (to the nearest 1/6 inch) of the washer that keeps the bearing stress between the plaster and the washer from exceeding 300 psi.