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Part A - Question 3 (Total Marks for Part A - Question 3:20) A steel beam...
End of Semester 1, 2018 STEN2002 Civil Engineering Materials (Total Mark for Question 4: 18) Part...
End of Semester 1, 2018 STEN2002 Civil Engineering Materials (Total Mark for Question 4: 18) Part A - Question 4 7 complicated frame that was difficult to analyse Using a rectangular strain gauge rosette, the actual strains at point A have been recorded while being subjected to test loads. It is necessary to determine the principal stresses and shear stresses in the actual beam subject to the test loads to check whether the stresses assumed in the design of the...
An existing steel beam is in use in a building.
An existing steel beam is in use in a building. Using a rectangular strain gauge rosette, the actual strains at point A have been recorded while being subjected to test loads which simulate crowd loading. It is necessary to calculate the principal stresses to check whether the beam is safe for its current purpose (ie: assess whether the stresses determined are less than the maximum permissible stresses) Figure 4: Strain gauge rosette location and recorded strains In this case it is reasonable...
5-13. A rectangular rosette is attached to a steel plate having E 30 106 psi and v-03. The strain measurements are: (a) ε 500 μ¡n./in., ε.-300 μ¡n./in., and -100 μίη./in. (b) ε.-305 μ¡n./in., ε.-7...
5-13. A rectangular rosette is attached to a steel plate having E 30 106 psi and v-03. The strain measurements are: (a) ε 500 μ¡n./in., ε.-300 μ¡n./in., and -100 μίη./in. (b) ε.-305 μ¡n./in., ε.-75 μ¡n./in., and ε.-150 μ¡n./in. Calculate the prin- cipal strains and stresses and the maximum shear stress. Locate the axis of the principal stress.
5-13. A rectangular rosette is attached to a steel plate having E 30 106 psi and v-03. The strain measurements are: (a) ε...
1) An element in plane strain has a 60° strain rosette that is 150 from the...
1) An element in plane strain has a 60° strain rosette that is 150 from the x axis. Use Mohr's circle to determine. E = 29,000 ksi G= 11,200 ksi &=-.0015 E, = .004 E = -0025 a) The principal strains and maximum shear strain. b) Determine the location of the principal strains. c) Determine the stresses from the strains given d) Determine the stresses from the principal strains
Question 1 a. The wide-flange beam is subjected to the 50-N force as shown in Figure...
Question 1 a. The wide-flange beam is subjected to the 50-N force as shown in Figure 1(a). Determine the principal stresses in the beam at point located on the web at the bottom of the upper flange: 0 the principal stress [5 marks) (CLOI:PLOI:C2) (ii) the maximum in-plane shear stress and average normal stress at the point [5 marks) (CLO3PLO3:C4) 250 12 Figure 1(a) b. The strain at point on a beam as shown in Figure 1(b) has components (...
Each line in Table 1 represents a set of data corresponding to a given plane stress...
Each line in Table 1 represents a set of data corresponding to a given plane stress condition. The first three columns are strains (in microstrain) obtained using a three-element rectangular rosette. The final two items are material properties. For a selected set of data, determine the following: (a) The principal strains (b) The principal stresses (c) The maximum shear stress (d) Principal directions referred to the axis of gage a Also, sketch the following (e) Mohr's circles for stress (f)...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure,...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure, the following strains were established from the measurements taken:£x = 75x10", Eyy =-115x10-6 = 210 10-6 and Yxy yy (i) Determine the corresponding normal stresses Ox and and shear stress txy. For mild steel, use Young's modulus E= 205 GPa , Poisson's ratio v=0.3 and shear modulus G = 78.8 GPa. [6 marks] (ii) Using the values obtained in (i), determine the principal stresses...
Asap 1. The bracket is made of steel (Young's modulus 200 GPa; Poisson's ratio 0.3). When the force P is applied to the bracket, the gages in the strain rosette at point A have the followi...
Asap
1. The bracket is made of steel (Young's modulus 200 GPa; Poisson's ratio 0.3). When the force P is applied to the bracket, the gages in the strain rosette at point A have the following readings: E.-60 μ . Ep 135 μ l, and E.-264 μ (a) Determine the shear strain at point A. (b) Determine the orientation of the principal plane, the in-plane principal strains, the maximum in-plane shear strain, and the average in-plane normal strain. Determine the...
2. A structural steel beam is loaded in such a way that a stress block is...
2. A structural steel beam is loaded in such a way that a stress block is subjected to the stresses shown in Figure 2. Solve the problem using Mohr's circle drawn on a piece of graph paper with coordinates for all relevant points. Determine the in-plane principal stresses and the angle of orientation. Show your results on a stress block. Determine the maximum in-plane shear stress, the normal stresses, and the angle of orientation. Show your results on a stress...
(a) If the wide-flange beam shown in Figure Q4a is subjected to a shear of V = 23 kN
(a) If the wide-flange beam shown in Figure Q4a is subjected to a shear of V = 23 kN i. Calculate the moment of inertia of the cross section about the neutral axis.ii. Determine the shear stress on the web at A.(b) The state of stress at a point is shown on the element in Figure Q4b. Determine graphically using Mohr's circle i. The principal stresses. ii. The orientation of the principal planes.iii. The maximum in-plane shear stress and average normal stress at...
End of Semester 1, 2018 STEN2002 Civil Engineering Materials (Total Mark for Question 4: 18) Part A - Question 4 7 complicated frame that was difficult to analyse Using a rectangular strain gauge rosette, the actual strains at point A have been recorded while being subjected to test loads. It is necessary to determine the principal stresses and shear stresses in the actual beam subject to the test loads to check whether the stresses assumed in the design of the...
5-13. A rectangular rosette is attached to a steel plate having E 30 106 psi and v-03. The strain measurements are: (a) ε 500 μ¡n./in., ε.-300 μ¡n./in., and -100 μίη./in. (b) ε.-305 μ¡n./in., ε.-75 μ¡n./in., and ε.-150 μ¡n./in. Calculate the prin- cipal strains and stresses and the maximum shear stress. Locate the axis of the principal stress.
5-13. A rectangular rosette is attached to a steel plate having E 30 106 psi and v-03. The strain measurements are: (a) ε...
1) An element in plane strain has a 60° strain rosette that is 150 from the x axis. Use Mohr's circle to determine. E = 29,000 ksi G= 11,200 ksi &=-.0015 E, = .004 E = -0025 a) The principal strains and maximum shear strain. b) Determine the location of the principal strains. c) Determine the stresses from the strains given d) Determine the stresses from the principal strains
Question 1 a. The wide-flange beam is subjected to the 50-N force as shown in Figure 1(a). Determine the principal stresses in the beam at point located on the web at the bottom of the upper flange: 0 the principal stress [5 marks) (CLOI:PLOI:C2) (ii) the maximum in-plane shear stress and average normal stress at the point [5 marks) (CLO3PLO3:C4) 250 12 Figure 1(a) b. The strain at point on a beam as shown in Figure 1(b) has components (...
Each line in Table 1 represents a set of data corresponding to a given plane stress condition. The first three columns are strains (in microstrain) obtained using a three-element rectangular rosette. The final two items are material properties. For a selected set of data, determine the following: (a) The principal strains (b) The principal stresses (c) The maximum shear stress (d) Principal directions referred to the axis of gage a Also, sketch the following (e) Mohr's circles for stress (f)...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure, the following strains were established from the measurements taken:£x = 75x10", Eyy =-115x10-6 = 210 10-6 and Yxy yy (i) Determine the corresponding normal stresses Ox and and shear stress txy. For mild steel, use Young's modulus E= 205 GPa , Poisson's ratio v=0.3 and shear modulus G = 78.8 GPa. [6 marks] (ii) Using the values obtained in (i), determine the principal stresses...
Asap
1. The bracket is made of steel (Young's modulus 200 GPa; Poisson's ratio 0.3). When the force P is applied to the bracket, the gages in the strain rosette at point A have the following readings: E.-60 μ . Ep 135 μ l, and E.-264 μ (a) Determine the shear strain at point A. (b) Determine the orientation of the principal plane, the in-plane principal strains, the maximum in-plane shear strain, and the average in-plane normal strain. Determine the...
2. A structural steel beam is loaded in such a way that a stress block is subjected to the stresses shown in Figure 2. Solve the problem using Mohr's circle drawn on a piece of graph paper with coordinates for all relevant points. Determine the in-plane principal stresses and the angle of orientation. Show your results on a stress block. Determine the maximum in-plane shear stress, the normal stresses, and the angle of orientation. Show your results on a stress...
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