Mechanical Design
Which of the following is the most accurate method to determine whether a component will fail due to a combined load scenario?
A Principle of Superposition
B Hamiltonian
C Distortion Energy (Von Mises)
D Strain Energy
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The state of stress at a critical static location of a machine member, as determined by...
The state of stress at a critical static location of a machine member, as determined by strain gauge measurements, is shown on the stress element below. 1) Determine the maximum principle stress, the minimum principal stress, the maximum shear stress, the angle ??, and the angle ??. Note: use the Mohr's circle method from Chapter 4. 2) Determine the factor of safety for this machine member using the distortion energy yield criterion (Von-Mises) from Chapter 5, if the material is...
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MEC
432
Mechanical Design I
and draw the MDE theory please
The bearings at A and B exert only y and a components of force on the shaft. If Sy = 150 MPa for the selected ductile material, determine the factor of safety if the shaft diameter is 40 mm. Use the maximum distortion-energy theory of failure. Show the following procedures through the calculation steps (Free Body diagram (FBD), Reaction at A and D, Bending moment diagram, point of max....
A low carbon steel shaft is designed to have a diameter of 30 mm. It is...
A low carbon steel shaft is designed to have a diameter of 30 mm. It is to be subjected to an axial load (P-30 kN), a moment (M-200 N-m), and a torque (T-300 N-m). Assume the yield stress for the steel is (280 MPa), the Poisson's ratio is (v= 0.29), and the safety factor is (1-1). Calculate the margin of safety using the following failure theories. a.) Rankine Criteria (Maximum Principal Stress) b.) Tresca Criteria (Maximum Shear Stress) c.) Saint...
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Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06...
Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06 = 0o = A 48” diameter spherical tank was designed to operate with internal pressure less than 100psi. Due to valve failure, the pressure increased to 190 psi. The design notebook shows that the tank was designed using Von Mises yielding criterion with a design factor nd = 2. The tank is made of Titanium. Sy = 120 x 102psi. Determine if this is...
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Given: A bracket is made of material with Su-64 ksi and S. - 26.3 ksi. The...
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Chapter 15, Reserve Problem 150 The stresses on the surface of a hard bronze component are...
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Problems 1. (Subtotal: 21 points) A steady torque of 1500 Ibf in is transmitted by a machined shaft made of steel with an ultimate tensile strength of 100 kpsi. The transverse cross section at the location of a shoulder against which a gear sits is subjected to a bending moment which is a sinusoidal function of time with a maximum of 800 lbf-in. Furthermore, this cross section is the location for the maximum von Mises stress. The smaller diameter at...
The state of stress at a critical static location of a machine member, as determined by strain gauge measurements, is shown on the stress element below. 1) Determine the maximum principle stress, the minimum principal stress, the maximum shear stress, the angle ??, and the angle ??. Note: use the Mohr's circle method from Chapter 4. 2) Determine the factor of safety for this machine member using the distortion energy yield criterion (Von-Mises) from Chapter 5, if the material is...
MEC
432
Mechanical Design I
and draw the MDE theory please
The bearings at A and B exert only y and a components of force on the shaft. If Sy = 150 MPa for the selected ductile material, determine the factor of safety if the shaft diameter is 40 mm. Use the maximum distortion-energy theory of failure. Show the following procedures through the calculation steps (Free Body diagram (FBD), Reaction at A and D, Bending moment diagram, point of max....
A low carbon steel shaft is designed to have a diameter of 30 mm. It is to be subjected to an axial load (P-30 kN), a moment (M-200 N-m), and a torque (T-300 N-m). Assume the yield stress for the steel is (280 MPa), the Poisson's ratio is (v= 0.29), and the safety factor is (1-1). Calculate the margin of safety using the following failure theories. a.) Rankine Criteria (Maximum Principal Stress) b.) Tresca Criteria (Maximum Shear Stress) c.) Saint...
A ductile solid circular loar of 0,2 m in diameter is loaded as shown in the figure. The tensile stress-strain response of the bar is shown in the figure. Determine the following: a) Stress State at point A. b) Principal strains and absolute maximum shear strain using Mohr's arde c) Find out whether the barwill fail based Von Mises failure critenia, on 204 70- 60- 5m A 20- 10- 52N T 0.005 0.015 아이 OKNom 5kv.ml -2 KN
air under a pressure to 16 MPa. The tank has a 180 mm inner diameter and a 12 mm wall thickness (40 points) A torque of magnitude T-24kN-m is applied to the end of a tank containing 3. Part A. For a point on the outer surface of the tank, determine: a. the maximum normal stress b. the maximum shearing stress Part B. As a result of several tensile tests, it has been found that the tensile yield strength for...
Problem 1: The in-plane stresses on a thin-walled spherical tank with an internal pressure are 06 = 0o = A 48” diameter spherical tank was designed to operate with internal pressure less than 100psi. Due to valve failure, the pressure increased to 190 psi. The design notebook shows that the tank was designed using Von Mises yielding criterion with a design factor nd = 2. The tank is made of Titanium. Sy = 120 x 102psi. Determine if this is...
Q4. A bar shown below is loaded at its end acting perpendicular to the diagram, Strain Gauge Length A = 700mm Length B = 350.0mm Length C = 480.0mm Diameter D = 10.0mm Poisson's Ratio = 0.3 E= 220GP a) If the yield stress of the material (steel) is 200 MPa, calculate the maximum load (in Kg) that can be applied to the bar using Von Mises Criterion using a factor of safety of 1.5 (Marks - 5) b) Hence...
Given: A bracket is made of material with Su-64 ksi and S. - 26.3 ksi. The bracket is! subjected to fluctuating loading which results in the following stress and shear conditions: - 4870 psi - 2922 psi 1998 psi 1198 psi Find: 2) Use Mohr's circle to find the principle mean stresses and principle alternating stresses b) Calculate the von Mises stresses and ! c) Draw a plot of alternating stress vs. mean stress and Illustrate the Goodman line d)...
Chapter 15, Reserve Problem 150 The stresses on the surface of a hard bronze component are shown. The yield strength of the bronze is Oy = 314 MPa. Assume Sy = 135 MPa and Sxy = 159 MPa. (a) What is the factor of safety predicted by the maximum-shear-stress theory of failure for the stress state shown? According to this theory, does the component fail? (b) What is the value of the Mises equivalent stress for the given state of...
Problems 1. (Subtotal: 21 points) A steady torque of 1500 Ibf in is transmitted by a machined shaft made of steel with an ultimate tensile strength of 100 kpsi. The transverse cross section at the location of a shoulder against which a gear sits is subjected to a bending moment which is a sinusoidal function of time with a maximum of 800 lbf-in. Furthermore, this cross section is the location for the maximum von Mises stress. The smaller diameter at...
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