Unit details

ENSC3004 Solid Mechanics

Credit

6 points

Offering
(see Timetable)

Availability	Location	Mode
Semester 1	UWA (Perth)	Face to face
Semester 1	Online	Online timetabled

Content

This unit focuses on the relationship between stress and strain in solid, deformable, load-carrying structural and mechanical elements. Various types of loading such as tension, compression, bending, shear and torsion is considered as well as common failure modes and models. Design of structural and mechanical elements to withstand defined static loads is also covered. The objective of the unit is to develop an understanding of equilibrium, stress, strain, deformation and stability of 2D and 3D statically determinate and indeterminate structures, and to provide an introduction to the methods of analysis for design of structural and mechanical elements. The following major topics are covered: (1) concept of stress—tension, compression and shear; (2) stress and strain in 3D, generalised Hooke's law; (3) axially loaded members; (4) torsion; (5) shear forces and bending moments; (6) stresses in beams; (7) analysis of stress and strain; (8) applications of plane stress (pressure vessels, beams and combined loadings); (9) statically indeterminate beams; and (10) column buckling and stability.

Outcomes

Students are able to (1) choose references and sources of information relevant to the unit activities and use them to find relevant examples/information; (2) understand equilibrium conditions as applied to the analysis of structural and mechanical elements; (3) calculate reaction forces on a loaded element and draw normal force, shear force, torque and bending moment diagrams; (4) understand the relationship between stress and strain (Generalised Hooke's Law) in two dimensions and three dimensions; understand the relationship between Poisson's ratio, Young's modulus, shear modulus and bulk modulus; (5) calculate the normal stress and shear stress in structural elements induced by multidirectional loading; (6) understand the effects of different boundary conditions on the stress distribution in a loaded element; (7) understand the concept of stress concentration and its application to design; (8) assess cross-sectional properties and their effect on structural response to loading; (9) understand the stress/strain transformation, represent it using Mohr's circles and apply these and understand (including the mathematical bases) the concept of principal stress/strain and determine principal stress/strain in simple components under various types of loading; (10) understand the difference between ductile and brittle materials, and the choice of appropriate failure models; (11) understand and apply ideal (Euler's) column buckling model and stability criteria; and (12) apply the above to analyse the stress/strain state in simple mechanical components and interpret the results in terms of risk of the component failure.

Assessment

Indicative assessments in this unit are as follows: (1) quizzes; (2) lab reports; and (3) a final examination. Further information is available in the unit outline.

For units commencing in May 2022 or later the availability of the supplementary assessment is subject to confirmation.

Student may be offered supplementary assessment in this unit if they meet the eligibility criteria.

Except where supplementary assessment is not available in a unit, it will be offered to students in all units who:

• Are in good academic standing overall;
• Have passed over half the units taken in the teaching period concerned, except where they are only enrolled in two or less units in the period;
• Have submitted all assessment items in the unit;
• Have achieved a mark between 45 and 49 for the unit overall, or the same mark in any failed component item in the unit; and
• No finding of academic misconduct has been made against them in the unit concerned.

Additionally student may apply for supplementary assessment in any unit which is the final unit required for graduation in there course and where they have achieved a mark between 45 and 49 for the unit overall, or the same mark in any failed component item in the unit.

Unit Coordinator(s)

Professor Elena Pasternak

Unit rules

Prerequisites:

(ENSC1002 Material Behaviour from Atoms to Bridges or ENSC2004 Engineering Mechanics) and [MATH1002 Mathematical Methods 2 or (MATH1011 Multivariable Calculus and MATH1012 Mathematical Theory and Methods)].

Co-requisites:

Nil.

Incompatibility:

Nil.

Contact hours

in-class lectures (including continuous assessment): 3 hours a week (total 39 hours); practical classes: 24 hours (total)

Note

Enrolled students can access unit materials via the LMS (Learning Management System).

Recommended
reading

Beer, F. P. et al. Mechanics of Materials, 6th edn: McGraw-Hill 2012

Gere, J. M. and Goodno, B. J. Mechanics of Materials, 7th SI edn: Cengage Learning 2009