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Mechanics of Structures

Unit Code: UHT1125




Duration

Contact Hours

Campus

Prerequisite

Corequisite

1 Semester

90 hours

Hawthorn

Nil.

Nil.

Credit Points: 12.5 Credit Points


Related Course/s:

A unit of study in the Associate Degree in Engineering

Aims & Objectives:

During this unit, we aim to introduce first year engineering students to the basic principles of equilibrium and provide an environment where students can learn about and evaluate the behaviour of structural members under applied loads. In particular, structural behaviour of members under axial load, shear force and bending actions.

On completion of this unit, students should be able to:
  • Recognise and estimate the magnitude of loads acting on simple structural members
  • Demonstrate an understanding of rigid body equilibrium by: Drawing free body diagrams showing the function of simple structural elements; Calculating the force(s) or moment required to maintain a structure in equilibrium; Calculating external reactions on structural members under applied loading; Drawing axial force, shear force and bending moment diagrams for simple beams
  • Demonstrate an understanding of the behaviour of structural material by:  Calculating section properties for simple member cross sections; Calculating internal axial stresses, shear stresses, and bending stresses, in structural members.
Note: Structural members include beams, trusses, ties, struts, shafts and bolts.

Teaching Methods:

Lectures, Tutorials, Laboratory

Assessment:

Examinations (80%), Lab Reports (5%), Practical Examination (15%)
Actual allocation of marks will be specified in the Unit of Study Outline.

Generic Skills Outcomes:

Students are expected to enhance several of their graduate attributes during this unit and should consult with your lecturer if not clear as to how this unit achieves this. The graduate attributes which relate to this unit help to produce students who are:
  • Are capable in their chosen professional, vocational or study areas
  • Are adaptable and manage change.

In addition to the Swinburne generic attributes, this unit is also expected to enhance skills recognised by the Institution of Engineers (Australia), specifically:

  • Ability to apply knowledge of basic science and engineering fundamentals
  • Ability to understand problem identification, formulation and solution
  • Expectation of the need to undertake lifelong learning, and capacity to do so.

Content:

Forces and Equilibrium (15%):
  • Scalars and Vectors, Addition of Vectors, Resultant Calculations, Moment of a Force, Conditions of Equilibrium, Free Body Diagrams (2D and 3D), Two and Three Force Members, Calculations of Simple External Reactions, Principles of Friction.
Structural Analysis of Trusses and Design of Simple Connections (25%):
  • Free Body Diagrams and External Reactions Calculations. Analysis of Trusses by Method of Joints and Method of Sections, and Zero Force Members. Simple Analysis of Truss Connections by axial and shear stress, with an introduction in
    allowable stress vs. ultimate stress
Internal Loadings – Shear Force and Bending Moment Diagrams (30%):
  • Analysis of point loads, uniformly distributed loads, and non-uniformly distributied loads. Internal Actions of Beams: Axial Forces, Shear Forces and Bending Moments. Axial Force, Shear Force and Bending Moment Diagrams. Relationships between loads, shear and bending moments.
Section Properties of Structural Members (10%):
  • Location of Centroids (Centre of Gravity or Area) for Composite Bodies/Areas. Second Moments of Area (Moments of Inertia) by Integration. Second Moments of Area (Moments of Inertia) by the Parallel Axis Theorem for Composite Areas.

Internal Stresses – Shear and Bending Stresses (20%):
  • The Flexural Formula and Bending Stresses in Beams, Bending Stress distributions across Beam Sections. The Shear Formula and Shear Stresses in Beams, Shear Stress distributions across Beam Sections.

Textbooks:

Hibbeler, RC, Statics and Mechanics of Materials, Prentice Hall.