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Consider a circular hollow section, with outer diameter dp (in mm), and thickness tp (in mm). The circular hollow section is made from aluminium which has a density of 2700 kg/m³ and a shear modulus G = 30000 MPa. Question 11 Question D1 What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 12 Question D2 The CHS is changed so that the thickness is now 1.5tp but the diameter do is unchanged. The material is changed to steel which has a density of 7850 kg/m³ and a shear modulus G = 70000 MPa. What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 13 Question D3 The new CHS (ie the one made from steel with the larger thickness), is now filled with concrete which has density 2450 kg/m³. What is the mass per unit length of the concrete filled CHS (in kg/m)? If you need to use gravity, please use g = 10 m/s².

Consider a circular hollow section, with outer diameter dp (in mm), and thickness tp (in mm). The circular hollow section is made from aluminium which has a density of 2700 kg/m³ and a shear modulus G = 30000 MPa. Question 11 Question D1 What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 12 Question D2 The CHS is changed so that the thickness is now 1.5tp but the diameter do is unchanged. The material is changed to steel which has a density of 7850 kg/m³ and a shear modulus G = 70000 MPa. What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 13 Question D3 The new CHS (ie the one made from steel with the larger thickness), is now filled with concrete which has density 2450 kg/m³. What is the mass per unit length of the concrete filled CHS (in kg/m)? If you need to use gravity, please use g = 10 m/s².

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Part D dD = 225 mm tD = 5.5 mm Part D - There are 3 questions in this part Consider a circular hollow section, with outer diameter dp (in mm), and thickness tp (in mm). The circular hollow section is made from aluminium which has a density of 2700 kg/m3³ and a shear modulus G = 30000 MPa. Question 11 Question D1 What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 12 Question D2 The CHS is changed so that the thickness is now 1.5tp but the diameter do is unchanged. The material is changed to steel which has a density of 7850 kg/m³ and a shear modulus G = 70000 MPa. What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 13 Question D3 The new CHS (ie the one made from steel with the larger thickness), is now filled with concrete which has density 2450 kg/m³. What is the mass per unit length of the concrete filled CHS (in kg/m)? If you need to use gravity, please use g= 10 m/s².
Transcribed Image Text:Part D dD = 225 mm tD = 5.5 mm Part D - There are 3 questions in this part Consider a circular hollow section, with outer diameter dp (in mm), and thickness tp (in mm). The circular hollow section is made from aluminium which has a density of 2700 kg/m3³ and a shear modulus G = 30000 MPa. Question 11 Question D1 What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 12 Question D2 The CHS is changed so that the thickness is now 1.5tp but the diameter do is unchanged. The material is changed to steel which has a density of 7850 kg/m³ and a shear modulus G = 70000 MPa. What twisting moment (in kNm) will cause a maximum shear stress of 105 MPa? Give your answer as a positive number. Question 13 Question D3 The new CHS (ie the one made from steel with the larger thickness), is now filled with concrete which has density 2450 kg/m³. What is the mass per unit length of the concrete filled CHS (in kg/m)? If you need to use gravity, please use g= 10 m/s².
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