1.1 (A). A 25mm squarecross-sectionbar of length 300mm carries an axialcompressive load of 50kN.Determine the stress set up ip the barand its change of length when the loadis applied. For the bar materialE = 200 GN/m2. [80 MN/m2; 0.12mm.l

Answered: 1.1 (A). A 25mm squarecross-section bar…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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1.7 (A). A bar ABCD consists of three sections: AB is 25 mm square and 50 mm long, BC is of 20 mm diameter and 40 mm long and CD is of 12 mm diameter and 50 mm long. Determine the stress set up in each section of the bar when it is subjected to an axial tensile load of 20 kN. What will be the total extension of the bar under this load? For the bar material, E = 210GN/m2. [32,63.7, 176.8 MN/mZ, 0.062mrn.l 10:41 م
A steel [E=200 GPa] rod with a circular cross section is 10 m long. Determine the minimum diameter required if the rod must transmit a tensile force of 260 kN without exceeding an allowable stress of 240 MPa or stretching more than 10 mm.
A double-decker train. EXERCISES 1. A reciprocating steam engine connecting rod is subjected to a maximum load of 65 kN. Find the diameter of the connecting rod at its thinnest part, if the permissible tensile stress is 35 N/mm. [Ans. 50 mm) 2. The maximum tension in the lower link of a Porter governor is 580 N and the maximum stress in the link is 30 Nimm. If the link is of circular cross-section, determine its diameter. (Ans. 5 mm) Тор Contents Simple Stresses in Machine Parts 117 3. A wrought iron rod is under a compressive load of 350 KN. If the permissible stress for the material is 52.5 Nimm, cakculate the diameter of the rod. JAns. 95 mm) 4. A load of 5 kN is to be raised by means of a steel wire. Find the minimum diameter required, if the stress in the wire is not to exceed 100 N/mm. (Ans. 8 mm) 5. A square tie bar 20 mm x 20 mm in section carries a load. It is attached to a bracket by means of 6 bolts. Calculate the diameter of the bolt if the maximum stress in the tie bar is…
1. (A). A 25mm square cross-section bar of length 300mm carries an axial compressive load of 50kN. Determine the stress set up in the bar and its change of length when the load is applied. For the bar material E = 200 GN/m?. [80 MN/m²; 0.12mm]
3. A circular bar rigidly fixed at its both ends is 1.2 m long. It uniformly tapers from 100 mm at one end to 75 mm at the other. What is the maximum stress induced in the bar, when its tempera- ture is raised through 25 K? Take E as 200 GPa and a as 12 x 10/K. [Ans. 80 MPa] unifor from 00 to 60
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.
1. (A). A 25mm square cross-section bar of length 300mm carries an axial compressive load of 50kN. Determine the stress set up in the bar and its change of length when the load is applied. For the bar material E = 200 GN/m. [80 MN/m², 0.12mm] 2. (A). A steel tube, 25 mm outside diameter and 12mm inside diameter, cames an axial tensile load of 40 kN. What will be the stress in the bar? What further increase in load is possible if the stress in the bar is limited to 225 MN/m?? [106 MN/m²; 45 kN]
Question 3 Determine the elongation of the square hollow bar when it is subjected to the axial force P = 100 kN, find the permanent elongation of the bar. The bar is made of a metal alloy having a stress-strain diagram which can be approximated as shown. o (MPa) 500 600 mm P 50 mm 250 5 mm e (mm/mm) 0.00125 0.05 50 mm ´5 mm a. Find the stress (MPa) of the bar. b. Find the permanent elongation (mm) of the bar.
1. A 300mm long composite bar is constructed by bonding an alloy steel outer sleeve of outside diameter 75 mm to a solid mild steel core of diameter 67 mm. A tensile force of 200kN was applied to the composite bar. If the modulus of elasticity for the mild steel is 208 GN/m² and that for the alloy steel is 360 GN/m². Determine the following values for the composite bar: Calculate: a) The stress in the mild steel core. a) The stress in the alloy steel sleeve. a) The extension under loading of the composite bar.
1.1 (A) A 25mm square-cross-section bar of length 300 mm carries an axial compressive load of 50 kN. Determine the stress set up in the bar and its change of length when the load is applied. For the bar material E = 200 GN/m². [80 MN/m²; 0.12 mm.]
Two vertical forces are applied to a beam of the cross section shown. Determine the maximum tensile and 3. compressive stresses in portion BC of the beam. [ans: -79.8 MPa, 118.2 MPa] 200 mm 25 mm 25 mm 150 mm 25 mm 100 mm 100 kN 100 kN 15 m 0.5 m 05 m
Q1: A steel bar ABCD consists of three sections: AB is of 30mm diameter and 100 mm long, BC is 20 mm square and 400 mm long, and CD is of 12 mm diameter and 200mm long. The bar is subjected to an axial compressive load which induces a stress of 50 MN/m? on the largest cross-section. Determine the total decrease in the length of the bar when the load is applied. For steel E = 210GN/m?.

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1.1 (A). A 25mm squarecross-section bar of length 300mm carries an axial compressive load of 50kN. Determine the stress set up ip the bar and its change of length when the load is applied. For the bar material E = 200 GN/m2. [80 MN/m2; 0.12mm.l