A piece of machinery is suspended using two vertical solid cylindrical bars. The bars are 10...
A piece of machinery is suspended using two vertical solid cylindrical bars. The bars are 10 mm in diameter and 300 mm long. The mechanical properties of the material from which the bars are made are listed in the table below
| Property | Value |
| Elastic Modulus (GPa) | 200 |
| Yield strength (MPa) | 300 |
| Tensile strength (MPa) | 450 |
| Elongation in 50 mm (%) | 20 |
(a) Calculate the weight (in kg) of machinery that would cause
plastic yielding of the supporting bars. [4.8 x 10-3
kg]
(b) Calculate the length of the bars when plastic yielding ensued. [300.45 mm]
(c) Calculate the weight (in kg) of machinery that would cause the supporting bars to break. [7.2 x 103kg]
Homework Answers
In this we have to take the value of stress carefully as break of bar occure at tensile strenght and plastic deformation occur at yield strength.
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A piece of machinery is suspended using two vertical solid
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Please provide me clear handwriting Table 1: TENSILE TEST RESULTS OF A METAL SAMPLE with d...
Please provide me clear handwriting
Table 1: TENSILE TEST RESULTS OF A METAL SAMPLE with d = 7.42, lo = 40mm (4 marks) Load, KN Extension, mm Stress, MPa Strain 0 0 10 0.05 17 0.08 25 0.11 30 0.14 34 0.20 37.5 0.40 38.5 0.60 36 0.90 Cross-sectional Area (A) Modulus of Elasticity (E) Tensile Strength (ST) Percent Elongation (%EL) A = T d2 4 E = Sy Ey ST = PU A %EL = Extension at fracture Gauge...
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(20%) Question 6. The elastic modulus, yield strength and ultimate strength of a certain material afe 110 GPa 2400 MPa and 265 MPal respectively. If a cylindrical bar of this material 380 mm long is subjected to a uniaxial tension test and its length is increased by an amount áf O.50 mm under a tensile load ót 6660 N.At the same time its diameter decreased by0,28 mm Calculate; a) The initial diameter of the bar, (8%) d b) Under an...
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Please provide me clear handwriting
Table 1: TENSILE TEST RESULTS OF A METAL SAMPLE with d = 7.42, lo = 40mm (4 marks) Load, KN Extension, mm Stress, MPa Strain 0 0 10 0.05 17 0.08 25 0.11 30 0.14 34 0.20 37.5 0.40 38.5 0.60 36 0.90 Cross-sectional Area (A) Modulus of Elasticity (E) Tensile Strength (ST) Percent Elongation (%EL) A = T d2 4 E = Sy Ey ST = PU A %EL = Extension at fracture Gauge...
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4-An underground wastewater steel pipe with 2mm walls carries an
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Question 2. (Total 18 marks) 350 350 300 300 Same plot, but with expanded x axis 250 250 200 Stress (MPa) Stress (MPa) 150 $150 100 100 0 0 0 0.02 0.04 0.06 0.12 0.14 0.16 0.18 0 0.08 0.1 Strain 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Strain (a) Determine the % elongation, yield stress and ultimate tensile strength of the material tested above (3 marks) (b) Calculate the elastic modulus of the material tested above...
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