Last Updated S022020

### BCS106S

 Unit Name Structural Mechanics
 Unit Code BCS106S
 Unit Duration 1 Semester
 Award Bachelor of Science (Engineering) Duration 3 years
 Year Level One
 Unit Creator / Reviewer N/A
 Core/Elective:
 Pre/Co-requisites BSC101C, BSC103C
 Credit Points 3 Total Course Credit Points 81 (27 x 3)
 Mode of Delivery Online or on-campus.
 Unit Workload (Total student workload including “contact hours” = 10 hours per week; 5 hours per week for 24 week delivery)Pre-recordings / Lecture – 1.5 hoursTutorial – 1.5 hoursGuided labs / Group work / Assessments – 2 hoursPersonal Study recommended – 5 hours

## Unit Description and General Aims

The objective in presenting this unit is to provide students with detailed knowledge of the fundamental principles and applications of structural mechanics and static engineering.

The subject matter covered in this unit will include: the equilibrium of rigid bodies subjected to dry friction; rolling resistance; analysis of pin-jointed trusses using the method of joints and the method of sections; shear force and bending moment diagrams for beams; kinematics of particles; analysis of the motion of particles and rigid bodies using Newton’s laws; and, work, energy, impulse, and momentum as applied to particles, systems of particles, and rigid bodies.

The unit provides experience in design for axial loads and direct shear and determining shear stress in simple beams. We also cover determining torsional stresses and strains in circular shafts and determining beam bending stresses and strains.
At the conclusion of this unit, students will have the requisite knowledge to analyse and solve rigid body and kinematics problems in a multitude of settings and have the ability to transfer this knowledge to real-world applications.

## Learning Outcomes

On successful completion of this Unit, students are expected to be able to:

1. Analyse the equilibrium of rigid bodies.
Bloom’s Level 4
2. Analyse the forces in pin-jointed trusses using the method of joints and the method of sections.
Bloom’s Level 4
3. Construct and evaluate shear force and bending moment diagrams for beams with a variety of loads and types of support.
Bloom’s Level 3
4. Determine and design for axial loads and direct shear and shear stress in simple beams.
Bloom’s Level 5
5. Determine and analyse torsional stresses and strains in circular shafts.
Bloom’s Level 4
6. Determine and analyse beam bending stresses and strains.
Bloom’s Level 4

## Student assessment

 Assessment Type When assessed Weighting (% of total unit marks) Learning Outcomes Assessed Assessment 1 Type: Multi-choice test / Group work / Short answer questions / Practical / Remote Lab / Simulation Example Topic: Kinematics, Supports and Reactions. Students may complete a quiz with MCQ type answers and solve some simple equations to demonstrate a good understanding of the fundamental concepts Due after Topic 3 15% 1 Assessment 2 Type: Multi-choice test / Group work / Short answer questions / Practical / Remote Lab / Simulation Example Topic: Analysis of 2-D Trusses, Shearing Force and Bending Moment diagrams of beams. Students may provide solutions to simple problems on the listed topics to be completed in 2 hours Due after Topic 6 20% 2, 3 Assessment 3 Type: Multi-choice test / Group work / Short answer questions / Practical / Remote Lab / Simulation / ProjectExample Topic: Simple truss, Warren Truss, Spring test, Beam/frame test. Students may complete a quiz with MCQ type answers or solve some simple problems or using software to complete a practical. Due after Topic 9 20% 4, 5, 6 Assessment 4 Type: Examination Example Topic: All topics An examination with a mix of detailed report type questions and/or simple numerical problems to be completed in 3 hours Final Week 40% 1 to 6 Attendance / Tutorial Participation Example: Presentation, discussion, group work, exercises, self-assessment/reflection, case study analysis, application. Continuous 5% 1 to 6

#### Core Textbook

• Hibbeler, R C (2016). Engineering Mechanics: Statics and Dynamics (14h Edition), Pearson Education, ISBN 9780133915426.
• Hibbeler R C (2017). Mechanics of Materials (10th Edition) Pearson Education, ISBN 9789810694364
• IDC Technologies publications

#### Reference Materials

• Peer reviewed Journals
• Knovel library: http://app.knovel.com
• Other material and online collections as advised during the lectures

## Unit Content

#### Topic 1

Kinematics of a Particle: Force and Acceleration

• Newton’s Second Law of Motion
• The Equation of Motion
• Equation of Motion for a System of Particles
• Equations of Motion: Rectangular Coordinates
• Equations of Motion: Normal and Tangential Coordinates
• Equations of Motion: Cylindrical Coordinates

#### Topic 2

Planar Kinematics of a Rigid Body: Force and Acceleration

• Area Moment of Inertia
• Mass Moment of Inertia
• Planar Kinetic Equations of Motion
• Equations of Motion: Translation
• Equations of Motion: Rotation about a Fixed Axis

#### Topic 3

Supports and Reactions.

• Extension of equilibrium of bodies
• Extension on stress,
• Strain,
• Material properties.

#### Topic 4

Analysis of 2-D Trusses

• Simple Trusses
• The Method of Joints
• Zero-Force Members
• The Method of Sections
• Space Trusses

#### Topic 5

Analysis of 2-D Trusses and Space Trusses

• The Method of Sections
• Space Truss

#### Topic 6

Extension on Shearing Force and Bending Moment diagrams of beams and extension of stresses in Beams

• Relations between Distributed Load, Shear and Moment
• Draw the shear and moment diagrams for the overhang beam
• Draw the shear and moment diagrams for beams with internal hinges
• Stresses in Beams

#### Topic 7

Analysis of Frames

• Normal Force,
• Shearing Force and
• Bending Moment diagrams

#### Topic 8

Tension, Compression, and Shear Stresses

• Introduction to mechanics of materials
• Normal stress and strain
• Shear stress and strain
• Allowable stresses and allowable loads
• Design for axial loads and direct shear

#### Topic 9

• Introduction to axially loaded members
• Changes in lengths of axially loaded members
• Changes in lengths under non-uniform conditions
• Statically indeterminate structures
• Thermal effects, misfits, and pre-strains

#### Topic 10

Torsion

• Non-uniform torsion
• Statically indeterminate torsional members
• Thin-walled tubes

#### Topic 11

Beam Bending - extension

• Normal stresses in beams (linearly elastic materials)
• Design of beams for bending stresses

#### Topic 12

Unit Review

In the final week, students will have an opportunity to review the contents covered so far. Opportunity will be provided for a review of students’ work and to clarify any outstanding issues.

## Software/Hardware Used

#### Software

• Software: N/A

• Version: N/A

• Instructions:  N/A

• Additional resources or files: N/A

• N/A