Nt1310 Final Exam Answers
HIGHER EDUCATION DIVISION / SUTL
TAFE DIVISION
Cross out whichever is not applicable
Examinations: Semester: 1 2004 Paper 1 of 1
School of Engineering & Science Campus : Hawthorn
Subject Code(s): HES 2120
Full Subject Title: STRUCTURAL MECHANICS
STUDENT’S NAME: _________________________________ID No: ________________
Duration: 180 minutes Percentage of overall assessment covered by this paper : 75 %
Reading Time: 15 minutes
INSTRUCTIONS TO CANDIDATES
Materials Allowed
Answering Requirements
Answer all questions, state formulae used.
Swinburne University of Technology
School of Engineering AND SCIENCE
FINAL EXAMINATION - 1 st Semester 2004
(HES 2120, Structural Mechanics) …show more content…
The diameter of the shaft must be uniform throughout and there are two further design requirements : - the angle of twist between A and C must not exceed 1.5o; - the maximum permissible shaft shear stress is (MAX = 60 MPa. Determine the minimum shaft diameter that may be used, G = 77 GPa. (16 marks)
[pic]
Fig. 1
QUESTION TWO
A composite bar is made by securely bonding an aluminium strip (EA = 70 GPa) to a copper strip (EC = 105 GPa) as shown. The composite bar is bent about a horizontal axis with a moment of 30 Nm. Determine :
a) Location of centroid for transformed section, [pic]; and corresponding centroidal moment of inertia, IX . b) Maximum stress in aluminium strip. c) Maximum stress in copper strip.
(18 marks)
[pic]
Fig. 2
QUESTION
TAFE DIVISION
Cross out whichever is not applicable
Examinations: Semester: 1 2004 Paper 1 of 1
School of Engineering & Science Campus : Hawthorn
Subject Code(s): HES 2120
Full Subject Title: STRUCTURAL MECHANICS
STUDENT’S NAME: _________________________________ID No: ________________
Duration: 180 minutes Percentage of overall assessment covered by this paper : 75 %
Reading Time: 15 minutes
INSTRUCTIONS TO CANDIDATES
Materials Allowed
Answering Requirements
Answer all questions, state formulae used.
Swinburne University of Technology
School of Engineering AND SCIENCE
FINAL EXAMINATION - 1 st Semester 2004
(HES 2120, Structural Mechanics) …show more content…
The diameter of the shaft must be uniform throughout and there are two further design requirements : - the angle of twist between A and C must not exceed 1.5o; - the maximum permissible shaft shear stress is (MAX = 60 MPa. Determine the minimum shaft diameter that may be used, G = 77 GPa. (16 marks)
[pic]
Fig. 1
QUESTION TWO
A composite bar is made by securely bonding an aluminium strip (EA = 70 GPa) to a copper strip (EC = 105 GPa) as shown. The composite bar is bent about a horizontal axis with a moment of 30 Nm. Determine :
a) Location of centroid for transformed section, [pic]; and corresponding centroidal moment of inertia, IX . b) Maximum stress in aluminium strip. c) Maximum stress in copper strip.
(18 marks)
[pic]
Fig. 2
QUESTION