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University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated bending and fluctuated torsion. 2- Explain fatigue failure. What are the three stages of fatigue failure? Explain them. 3- What are the theories of static failure for brittle materials? Compare between them with the aid of graphical representation. (15 Marks) Q3/ For the Aluminum cantilever, shown in Fig.2 below, the factor of safety against fatigue is 2.4, the sensitivity factor 0.7, the surface finish factor is 0.91, the size factor is 0.6, Sut= 320 MPa and yield strength is 61 Mpa. Calculate, using a proper design theory, the diameter at the fillet. Neglect the transverse shear stress. Fig.2 0.2d ---50 kN d (15 Marks) 150kN 100mm 200mm

University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated bending and fluctuated torsion. 2- Explain fatigue failure. What are the three stages of fatigue failure? Explain them. 3- What are the theories of static failure for brittle materials? Compare between them with the aid of graphical representation. (15 Marks) Q3/ For the Aluminum cantilever, shown in Fig.2 below, the factor of safety against fatigue is 2.4, the sensitivity factor 0.7, the surface finish factor is 0.91, the size factor is 0.6, Sut= 320 MPa and yield strength is 61 Mpa. Calculate, using a proper design theory, the diameter at the fillet. Neglect the transverse shear stress. Fig.2 0.2d ---50 kN d (15 Marks) 150kN 100mm 200mm

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.3DP
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University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated bending and fluctuated torsion. 2- Explain fatigue failure. What are the three stages of fatigue failure? Explain them. 3- What are the theories of static failure for brittle materials? Compare between them with the aid of graphical representation. (15 Marks) Q3/ For the Aluminum cantilever, shown in Fig.2 below, the factor of safety against fatigue is 2.4, the sensitivity factor 0.7, the surface finish factor is 0.91, the size factor is 0.6, Sut= 320 MPa and yield strength is 61 Mpa. Calculate, using a proper design theory, the diameter at the fillet. Neglect the transverse shear stress. Fig.2 0.2d ---50 kN d (15 Marks) 150kN 100mm 200mm
Transcribed Image Text:University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated bending and fluctuated torsion. 2- Explain fatigue failure. What are the three stages of fatigue failure? Explain them. 3- What are the theories of static failure for brittle materials? Compare between them with the aid of graphical representation. (15 Marks) Q3/ For the Aluminum cantilever, shown in Fig.2 below, the factor of safety against fatigue is 2.4, the sensitivity factor 0.7, the surface finish factor is 0.91, the size factor is 0.6, Sut= 320 MPa and yield strength is 61 Mpa. Calculate, using a proper design theory, the diameter at the fillet. Neglect the transverse shear stress. Fig.2 0.2d ---50 kN d (15 Marks) 150kN 100mm 200mm
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