P= 50KN . 600 mm 20 mm P= 50KN FIGURE O1(a)

A thin rectangular polymer plate PQRS of width b = 361 mmand height = 193 mm is shown in the figure. The plate is deformed so that corner Q is displaced upward by c = 3.1 mm and corner R is displaced leftward by the same amount. Determine the shear strain at corner P after deformation. a Y = b S a urad

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12. two decimal places

1500 KN 800 mm 70 mm 100 mm 1500 KN A bar has a length of 800 mm, width 100 mm, and thickness 70 mm, and is being subjected to 1500 KN of tension as shown. As a result, the length of the bar as increased to 802.5 mm and its width has decreased to 99.906 mm. Assume elastic behavior. a) Determine the Young's modulus (E) of the material b) Determine the Poisson's ratio (v) of the material c) Determine the Shear modulus (G) of the material d) Determine the new thickness of the bar in mm e) Determine the percentage change in the total volume of the bar

A rigid bar AB is supported by three rods. If a load P = 200 kN is applied to the bar, modulus of elasticity of copper is 110 x 10 kN/m² and modulus of elasticity of steel is 200 x 10 kN/m?, determine the a. the stress in the steel rod in MPa, b. the stress in the copper rod in MPa, and c. the deformation in the rods in mm. Steel rod Steel rod A = 900 sq. mm A = 900 2 m sq. mm Copper A = 1200 sq. mm 2 m A 1m +1 m P = 200 kN

The stiffened top skin of a wing structure is modelled as a panel has simply supported edges as shown in the figure below. a The sheet is 4.7 mm thick and the stringers are spaced at b 0.6 m. Assume the dimension of the panel in spanwise direction is much longer than the chordwise direction. The material constants are: E 70 x 10' N/m2, Poisson's ratio v 0.34. Determine the spanwise stress at which the sheet between the stringers will begin to buckle. Give your answer in MPa to three decimal places.

1. An aluminum rod is rigidly attached between steel rod and a bronze rod as shown in the figure. Axial loads are applied at the positions indicated. Find the maximum value of P that will not exceed a stress in steel of 140 MPa, in aluminum of 90 MPa, or in bronze of 100 MPa.

The stress concentration occurs whenever there is an abrupt change in the cross-section of a component or there is any discontinuity in the material. The figure given below shows a flat plate with a hole of diameter d. The plate is fixed at one end and the other end is subjected to a tensile load of P = 41 kN due to which there is a change in length of 0.4 mm. The thickness of the plate is 11 mm. The maximum stress developed in the flat plate is 235 MPa. Take Young's modulus(E) = 210 GPa and theoretical stress concentration factor =2, Calculate the following values: i) Width of the plate (W2) in mm ii) Nominal Stress in MPa iii) Diameter of the hole (d) in mm Hole with stress concentration factor 2 35 mm W2 35 mm P 300 mm 350 mm- 250 mm

1) The state of plane stress at a point is shown on the element in Figure. Determine the maximum in-plane shear stress at this point. B 50 MPa ox Ox= -80 MPa = +50 MPa Oy Txy = -25 MPa 80 MPa 80 MPa A 25 MPa Ľ 50 MPa