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 listed
b) 19.2mm
c) 15.3mm
d) 21.2mm
Homework Answers
Answer: b
Explanation: σ(max)=σ/2 + √[(σ/2)²+ τ²]=10154.35/A = 35N/mm².
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
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
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
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) Ab) Bc) A or Bd) None of the listed
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 Questions and Answers – Eccentric Loaded Bolted Joints
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Then calculate the amount and point of maximum stress including
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Design of Machine Elements
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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
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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...
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) Ab) Bc) A or Bd) None of the listed
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
Design of Machine Elements (Spring 2019) Name: 1. Known: A gear exepts the same known force on each of two geometrically different steel shafts supported by self- aligning bearings at A and B. Find: Draw shear and bending moment diagrams for each shaft. Schematic and Given Data: 100 N 100 N +200- 300 +200- 300— 140 50 N 2. Known: A know maximum normal stress is produced by a bending moment. Find: Determine the value of bending moment • In...
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the hole. (20mm diameter for the hole sorry with a center position
of 100mm from the left side and 50mm from the bottom)
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The bracket is shown in (Figure 1). Assume that 1 = 50 mm, a = 180 mm, t = 4 mm, h = 45 mm, F = 950 N, ID = 30 mm, OD = 50 mm. Assume a ductile material strength of Sy = 400 MPa (60 kpsi). Part A Calculate the safety factor at point A using the distortion-energy theory. Express your answer to three significant figures. VALOIT vec ? NDE A Submit Request Answer Figure 1 of...
Design of Machine Elements
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