A square metal bar of length 1.25 m and 50 mm on each side is subjected...
A test bar of a metal with 12.83 mm in diameter and 50 mm gage length is loaded elastically with 156 kN tensile load and is stretched by 0.356 mm. Its diameter is 12.80 mm under load. What is the elastic modulus of the metal?
A bar of metal (length L =200 mm, diameter d=10 mm) is loaded axially by a tensile force P = 12 kN. If the bar elongates by 0.3 mm, what is the decrease in diameter d? What is the value of modulus of elasticity? Consider, v=0.30.
1. A single crystal sample of a metal with a HCP structure is subjected to an axial tensile force. The sample is of circular cross-section, with a diameter of 4 mm, and is of 50 mm length. An elastic extension of 0.047 mm is measured when an axial tensile force of 1.25 kN is applied. When the tensile force is increased to 2.8 kN plastic deformation commences. (a) Given that Poisson’s ratio for the metal is 0.35, estimate the theoretical...
The steel bar has the original dimensions shown in the figure. (Figure 1) It is subjected to an axial load of 50 kN. Est = 193 GPa, vst=0.30. Part A Determine the change in its length. Express your answer to three significant figures and include appropriate units.Part B Determine the new height at section a-a. Part CDetermine the new width at section a-a.
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
Do not round intermediate calculations. Give your final answer(s) to three significant figures. A square yellow-brass bar must not stretch more than 4.6 mm when it is subjected to a tensile load. Knowing thatE -105 GPa and that the allowable tensile strength is 164 MPa, determine (a ) the maximum allowable length of the bar, (b) the required dimensions, in mm, of the cross section if the tensile load is 31 kN. (a) The maximum allowable length of the bar...
cong the Figure 2-37 Ex.17 An alloy circular bar ABCD, 3 m long is subjected to a tensile force of 50 KN as shown in Figure 2-38. If the stress in the middle portion BC is not to exceed 150 Mrd, mon was should be its diameter? Also find the length of the middle portion, if the total extension o the bar should not exceed by 3 mm. Take E as 100 GPa. 40 0 50 KN → 50 kN...
A square wood platform of side-length ? = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, ?? (kN/m2), acting over the entire top surface of the platform. The tensile...
Q1. A circular rod of 12 mm diameter was tested for tension. The total elongation on a 300 mm length was 0.22 mm under a tensile load of 17 KN. Find the value of E. (2.5 Marks) Answer: Q2. A prismatic bar has a cross section of 25 mm x 50 mm and a length of 2m under an axial force of 90 KN. The measured elongation of the bar is 1.5 mm. Compute the tensile stress and strain in...
Problem 1: A round bar with a diameter of 29 mm, and 4880 mm in length was under tensile test to determine the mechanical properties of the material. The following table shows the load versus strain data collected from the testing machine and a strain gauge applied on the bar in the loading direction. The measured percentage elongations were 19.4 % and 14.2 % on gauge lengths of 100 mm and 200 mm respectively. Assume: the elongations include the necking:...