Machine Design
A wall bracket is attached to the wall by means of 2 identical bolts, one at A and one at B. The force of 20kN acts at a distance of 400mm. Bolt A lies at a distance of 50mm from axis of tilt and bolt B 500mm. Allowable shear stress in the bolts is 100N/mm² and tensile is 40N/mm². Which bolt is used a criterion for designing?
a) A
b) B
c) A or B
d) None of the listed
Homework Answers
Answer: b
Explanation: The bolt lying farthest from the axis of tilt experience the maximum stress.
Machine Design
A wall bracket is attached to the wall by means of 2 identical bolts, one at A and one at B. The force of 20kN acts at a distance of 400mm. Bolt A lies at a distance of 50mm from axis of tilt and bolt B 500mm. Allowable shear stress in the bolts is 100N/mm² and tensile is 40N/mm². Find the radius of Mohr circle which can be made from the shear stress and tensile stress acting on bolts.(Consider bolt...
Machine Design
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. Find the direct shear stress in bolts if diameter=18mm.a) 16.9N/mm²b) 19.6 N/mm²c) 78.6 N/mm²d) 76.8 N/mm²
Machine Design Questions and Answers – Eccentric Loaded Bolted Joints
In the following figure, two plates are fastened by means of two bolts. The yield strength of bolt is 400N/mm² and factor of safety is 4. Determine the permissible shear stress in the bolts.a) 100N/mm²b) 50N/mm²c) 25N/mm²d) 75N/mm²
Machine Design
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. If distance between the bolts from the axis of tilting is 125mm and 25mm, then find the effective tensile force acting on the bolts lying at 25mm from tilting axis.a) None of the listedb) 7692.3Nc) 2345.2Nd) 1538.46N
Standard design practice, as exhibited by the solutions to Probs. 8-66 to 8-70, is to assume that...
Standard design practice, as exhibited by the solutions to Probs. 8-66 to 8-70, is to assume that the bolts, or rivets, share the shear equally. For many situations, such an assumption may lead to an unsafe design. Consider the yoke bracket of Prob. 8-61, for example. Suppose this bracket is bolted to a wide-flange column with the centerline through the two bolts in the vertical direction. A vertical load through the yoke-pin hole at distance B from the column flange...
Machine Design
A flange of radius 200mm is fastened to the machine screw by means of four cap screws of pitch circle radius 150mm. The external force P is 20kN which is loaded at 160mm from the machine screw. There are two dowel pins to take shear load. Determine the core diameter of cap screw if permissible tensile stress in cap screw is 40N/mm².a) None of the listedb) 11.21mmc) 12.33mmd) 14.12mm
Machine Design
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. Find the size of the bolt using maximum principal stress theory.a) None of the listedb) 19.2mmc) 15.3mmd) 21.2mm
Machine Design
With reference to the following figure, a plate, 75mm wide and 10mm thick, is joined with another plate as shown. The permissible tensile and shear stress in the welds are 50/mm² and 40N/mm². Determine the required length of each parallel fillet weld if length of transverse weld is 40mm.a) 11mmb) 9mmc) 8mmd) 7mm
AY 2 019 SUNDAY MONDAY TUESDAY WED PART1 Strength of Materials for Technicians 4th Edition 50 33 A steam boiler is to have a 300 mm diameter hand hole placed on one end. If the internal pressure i...
AY 2 019 SUNDAY MONDAY TUESDAY WED PART1 Strength of Materials for Technicians 4th Edition 50 33 A steam boiler is to have a 300 mm diameter hand hole placed on one end. If the internal pressure is to be 1,3 MPa, how many 15 mm bolts will be required to keep the cover ie in position? The root diameter of a 15 mm bolt is 12 mm. The allowable tensile stress in the bh is 100 MPa and the...
please make your answers clear and organized . Problem 8.5-3 A cylindrical pressure vessel having radius...
please make your answers clear and organized .
Problem 8.5-3 A cylindrical pressure vessel having radius r-300 mm and wall thickness t 15 mm is subjected to internal pressure p 2.5 MPa. In addition, a torque T120 kN-m acts at each end of the cylinder (see figure) (a) Determine the maximum tensile stress ?mix and the maximum in-plane shear stress Tmax in the wall of the cylinder torque T? 30 MPa and 76 MPa, respectively, what is the minimum required...
A wall bracket is attached to the wall by means of 2 identical bolts, one at A and one at B. The force of 20kN acts at a distance of 400mm. Bolt A lies at a distance of 50mm from axis of tilt and bolt B 500mm. Allowable shear stress in the bolts is 100N/mm² and tensile is 40N/mm². Find the radius of Mohr circle which can be made from the shear stress and tensile stress acting on bolts.(Consider bolt...
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. Find the direct shear stress in bolts if diameter=18mm.a) 16.9N/mm²b) 19.6 N/mm²c) 78.6 N/mm²d) 76.8 N/mm²
In the following figure, two plates are fastened by means of two bolts. The yield strength of bolt is 400N/mm² and factor of safety is 4. Determine the permissible shear stress in the bolts.a) 100N/mm²b) 50N/mm²c) 25N/mm²d) 75N/mm²
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. If distance between the bolts from the axis of tilting is 125mm and 25mm, then find the effective tensile force acting on the bolts lying at 25mm from tilting axis.a) None of the listedb) 7692.3Nc) 2345.2Nd) 1538.46N
Standard design practice, as exhibited by the solutions to Probs. 8-66 to 8-70, is to assume that the bolts, or rivets, share the shear equally. For many situations, such an assumption may lead to an unsafe design. Consider the yoke bracket of Prob. 8-61, for example. Suppose this bracket is bolted to a wide-flange column with the centerline through the two bolts in the vertical direction. A vertical load through the yoke-pin hole at distance B from the column flange...
Given data for bracket is P=20kN, e=100mm, S(yt)=400N/mm², FS=3. Find the size of the bolt using maximum principal stress theory.a) None of the listedb) 19.2mmc) 15.3mmd) 21.2mm
With reference to the following figure, a plate, 75mm wide and 10mm thick, is joined with another plate as shown. The permissible tensile and shear stress in the welds are 50/mm² and 40N/mm². Determine the required length of each parallel fillet weld if length of transverse weld is 40mm.a) 11mmb) 9mmc) 8mmd) 7mm
AY 2 019 SUNDAY MONDAY TUESDAY WED PART1 Strength of Materials for Technicians 4th Edition 50 33 A steam boiler is to have a 300 mm diameter hand hole placed on one end. If the internal pressure is to be 1,3 MPa, how many 15 mm bolts will be required to keep the cover ie in position? The root diameter of a 15 mm bolt is 12 mm. The allowable tensile stress in the bh is 100 MPa and the...
please make your answers clear and organized .
Problem 8.5-3 A cylindrical pressure vessel having radius r-300 mm and wall thickness t 15 mm is subjected to internal pressure p 2.5 MPa. In addition, a torque T120 kN-m acts at each end of the cylinder (see figure) (a) Determine the maximum tensile stress ?mix and the maximum in-plane shear stress Tmax in the wall of the cylinder torque T? 30 MPa and 76 MPa, respectively, what is the minimum required...
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