A wood post has a modulus of Elasticity, E, of 1.3x106 psi. It is 20 ft...
A wood post has a modulus of Elasticity, E, of 1.3x106
psi.
It is 20 ft long and experiences a change in length of 0.25
in.
Determine the average unit stress in the post. Assume a
linear
stress-to-strain relationship.
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A wood post has a modulus of Elasticity, E, of 1.3x106
psi.
It is 20 ft...
Material Modulus of Maximum Axial Maximum Shear Stress (o) Elasticity (E) Stress (t) Brass Steel Wood...
Material Modulus of Maximum Axial Maximum Shear Stress (o) Elasticity (E) Stress (t) Brass Steel Wood inum 10,500 ksi16 ksi 22 ksi 30 ksi 15,000 ksi 29,000 ksi 1,600 ksi 10 ksi 13 ksi 20 ksi 90 psi 1000 psi 2) A rectangular cantilever bearm is loaded by a moment Mo = 4500 ft-lbs at its end as shown below. The length of the beam is L 4 ft and the height of the beam is h 3 in. If...
1. A state of strain (Ex) on a surface of material with modulus of elasticity E-30x10* psi is giv...
1. A state of strain (Ex) on a surface of material with modulus of elasticity E-30x10* psi is given as if the possion's ratio for material is given by s 0.3, and shear stress at the same section is given as 20 Kpsi, find normal stress, and Lateral Stress σ , and from these values and shear stress find principal stresses and maximum shear stress at the section and their directiohal angles. {knowing σ «E ε and ơy--μο, )
1....
An elastoplastic material with strain hardening has an elasto-plastic stressstrain relation. The modulus of elasticity (E)...
An elastoplastic material with strain hardening has an elasto-plastic stressstrain relation. The modulus of elasticity (E) is 25x106 psi, yield strength is 70 ksi, and the slope of the strain hardening portion of stress-strain diagram is 3x106 psi Problem # 4 Calculate: A) the strain that corresponds to a stress of 80 ksi B) If the 80-ksi stress is removed, calculate the permanent strain
A wood bar is subjected to tensile force of 60 kips at two ends. It is 5 ft long, and has the rectangular Cross section which height is 4 in, and width is 2 in.
(a) A wood bar is subjected to tensile force of 60 kips at two ends. It is 5 ft long, and has the rectangular Cross section which height is 4 in, and width is 2 in. The modulus of elasticity is 1.9×103ksi. Determine the total clastic deformation of the wood bar. Answer in the unit of inches, to 0.001. Note: 1 ft = 12 in., 1 ksi = 1000 psi. (b) If this wood bar has a hole with a diameter...
14) The bar in Figure 6 has a circular cross section. A change in length of...
14) The bar in Figure 6 has a circular cross section. A change in length of 0.06 inches was measured in the y-direction. A strain of -417(10) was measured in the x-direction. Calculate the Poisson's Ratio for the material. d 0.25 in. P 2 ft A. 0.224 B. 0.195 Figure 6 C. 0.247 D. 0.167 15) The bar in Figure 6 experiences a temperature increase of 26°F. Calculate the change in length of the bar if P 0, E 27,000...
Numbers: 1-7 1. During a stress-strain test, the unit deformation at a stress of 5,000 psi...
Numbers: 1-7
1. During a stress-strain test, the unit deformation at a stress of 5,000 psi was observed to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these results be valid if the proportional limit were 18,000 psi? Explain. 2. A steel wire 30 feet long, hanging vertically, supports...
of elasticity (E.) Per ACI 318-14 code, determine the modulus of rupture (f) and modulus of...
of elasticity (E.) Per ACI 318-14 code, determine the modulus of rupture (f) and modulus of elasticity (Ec) for concrete with a compressive strength of 3,500 psi. Assume the concrete is normal weight concrete. 2.
1. The circular bar has a length of 12 ft-o in., a diameter of 1 in.,...
1. The circular bar has a length of 12 ft-o in., a diameter of 1 in., and a modulus of elasticity E = 29x10 psi. It is subjected to an axial force of 10,000 lbs along the centroidal axis of the bar's cross-sectional area as shown. Find the following: (i) Average normal stress and average shear stress at section a-a (ii) Average normal stress and average shear stress at section b-b (iii) The bar total elongation 10,000 lbs 10,000 lbs...
7 A simply supported composite beam 12 ft. long is loaded by a force of 6...
7 A simply supported composite beam 12 ft. long is loaded by a force of 6 k as shown. The cross-section of the composite beam consists of a wood block reinforced on its top and bottom by steel channels. The wood block has a modulus of elasticity of 2000 ksi while the steel channel has a modulus of elasticity of 30000 ksi. The steel channel has the following dimensions. Section Area Izz Centroid d tw bf in2in in.) Kin.) (in)...
roblem 1: The built-up shaft consists of a pipe AB and solid rod BC. Pipe AB...
roblem 1: The built-up shaft consists of a pipe AB and solid rod BC. Pipe AB has an inner diameter of 20 mm and outer diameter of 28 mm. The length of AB is 200 mm. Rod BC has a diameter of 12 mm and a length of 180 mm. (a) Determine the average normal stress at points D and E (b) If the modulus of elasticity of pipe AB is EAB-200 GPa, Poisson's ratio of rod BC is VBc...
Material Modulus of Maximum Axial Maximum Shear Stress (o) Elasticity (E) Stress (t) Brass Steel Wood inum 10,500 ksi16 ksi 22 ksi 30 ksi 15,000 ksi 29,000 ksi 1,600 ksi 10 ksi 13 ksi 20 ksi 90 psi 1000 psi 2) A rectangular cantilever bearm is loaded by a moment Mo = 4500 ft-lbs at its end as shown below. The length of the beam is L 4 ft and the height of the beam is h 3 in. If...
1. A state of strain (Ex) on a surface of material with modulus of elasticity E-30x10* psi is given as if the possion's ratio for material is given by s 0.3, and shear stress at the same section is given as 20 Kpsi, find normal stress, and Lateral Stress σ , and from these values and shear stress find principal stresses and maximum shear stress at the section and their directiohal angles. {knowing σ «E ε and ơy--μο, )
1....
14) The bar in Figure 6 has a circular cross section. A change in length of 0.06 inches was measured in the y-direction. A strain of -417(10) was measured in the x-direction. Calculate the Poisson's Ratio for the material. d 0.25 in. P 2 ft A. 0.224 B. 0.195 Figure 6 C. 0.247 D. 0.167 15) The bar in Figure 6 experiences a temperature increase of 26°F. Calculate the change in length of the bar if P 0, E 27,000...
Numbers: 1-7
1. During a stress-strain test, the unit deformation at a stress of 5,000 psi was observed to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these results be valid if the proportional limit were 18,000 psi? Explain. 2. A steel wire 30 feet long, hanging vertically, supports...
of elasticity (E.) Per ACI 318-14 code, determine the modulus of rupture (f) and modulus of elasticity (Ec) for concrete with a compressive strength of 3,500 psi. Assume the concrete is normal weight concrete. 2.
1. The circular bar has a length of 12 ft-o in., a diameter of 1 in., and a modulus of elasticity E = 29x10 psi. It is subjected to an axial force of 10,000 lbs along the centroidal axis of the bar's cross-sectional area as shown. Find the following: (i) Average normal stress and average shear stress at section a-a (ii) Average normal stress and average shear stress at section b-b (iii) The bar total elongation 10,000 lbs 10,000 lbs...
7 A simply supported composite beam 12 ft. long is loaded by a force of 6 k as shown. The cross-section of the composite beam consists of a wood block reinforced on its top and bottom by steel channels. The wood block has a modulus of elasticity of 2000 ksi while the steel channel has a modulus of elasticity of 30000 ksi. The steel channel has the following dimensions. Section Area Izz Centroid d tw bf in2in in.) Kin.) (in)...
roblem 1: The built-up shaft consists of a pipe AB and solid rod BC. Pipe AB has an inner diameter of 20 mm and outer diameter of 28 mm. The length of AB is 200 mm. Rod BC has a diameter of 12 mm and a length of 180 mm. (a) Determine the average normal stress at points D and E (b) If the modulus of elasticity of pipe AB is EAB-200 GPa, Poisson's ratio of rod BC is VBc...
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