MEM30006A

MEM30006A: Calculate stresses in simple structures (54 HRS)

Nominal Hours: 54 | Diploma/Adv Dip: Elective (Group 3) | Competency Based
Assessment Plan A: (One Sem: 18 weeks) Updated Mar 2018

Task	Topic Description and Link to Notes	Quiz #	Practice iTester	Assess Moodle	Lesson schedule	Assess schedule	Work Load%	Must Pass
1	Simple Stress	10301			1	4	10	Y
2	Elasticity	10302			2	6	10	Y
4	Bolted Joints	10303			4	7	15	Y
5	Welded Joints and Pressure Vessels	10304			5	8	15	Y
6	Torsion	10308			7	10	10	Y
7	Area Moments: Simple , Combined	10305			9	12	15	Y
3	Bending Moment	10306			12	15	10	Y
8	Bending Stress	10307			13	16	15	Y
9	Written Test: Fully worked bolted joint problem Fully worked beam problem, including Statics, FBD/SFD/BMD, Ixx, deflection Various simple stress questions / thermal	Exam	-	-	-	17	-	-
-	TOTAL	-	-	-	-	-	100	-

Quiz = Computer Based Testing: Typically consists of practice mode (iTester) and assessment mode (Moodle).
Exam = Written test submitted on paper, all working shown neatly.

*Where applicable.

ASSESSMENT

(CAUTION: This subject contains most of MEM30006A Stresses, so you should do both together) Assessment is a combination of multiple choice tests, written tests, and submitted reports (print/email).

Lab Reports: Specification for lab reports. (Including error analysis where required)
Project Reports: Specification for project reports.
TESTER tasks: Computer based learning and assessment using the TESTER program.
Procedures and rules. For most computer-based assessments, homework must be presented before Tester (exam mode) can be attempted. In some cases, certain programs (e.g. Excel) are excluded from running with Tester during an exam.

When you have completed this unit of competency you will have developed the knowledge and skills to determine the resultant and equilibrant of systems of forces, in one plane, then determine nominal sizes for a simple horizontal beam subject to a combination of uniform and point loadings.

Required Text

Text book	Subjects	Picture
Ivanoff, Val Engineering mechanics: An introduction to statics, dynamics and strength of materials McGraw-Hill. 1996 ISBN 0074702394 RRP $80.95 (June 2009)	Forces (Statics) Dynamics Stresses

Formula Sheet

Large size (900x1208)

Full Size (2416x3244)

Edits: 20200511 Added Torsion diameter formula.

Unit MEM30006A: Calculate stresses in simple structures (54 HRS)

(CAUTION: This subject is strongly dependent on MEM30005A Forces, so you should do both together.
Preferably complete most of Forces first before starting Stresses)
This unit covers determining stresses and their effect on the strength and stability of simple structures and mechanical components.

1. Determine stresses in simple structures and mechanical components	1.1	The shear stresses in simple bolted connections are determined.
	1.2	The nominal weld size or length of weld required on simple welded connections is determined to meet load requirements.
	1.3	The nominal weld size or length of weld required on simple welded connections is determined to meet load requirements.
2. Verify stress levels using appropriate reference material	2.1	Appropriate reference materials are used to verify that stress loading is acceptable and in accordance with standard operational procedures.
	2.2	Verification results are reported according to standard operational procedures.

Required skills

interpreting drawings and graphical representations
calculating stresses using given formulas
construction of torque distribution diagrams
accessing relevant codes and reference material
interpreting results against reference materials

Required knowledge

stress and strain
normal stress and strain
modules of elasticity
deformation
Poisson's Ratio
shear stress and strain
modulus of rigidity
yield stress, ultimate stress, proportional limit, factor of safety, allowable stress
centrally loaded connections
bolted connections
shear, tensile, torque and bearing stresses
centrally loaded welded connections
fillet and butt welds, method of failure
size and length of weld
effect of hole punching longitudinal stress
how to access and use relevant codes and reference material

Schedule: MEM30005A Calculate Force Systems Within Simple Beam Structures

1. Stresses

axial tension and compression
normal stress and strain
Hooke's law and modulus of elasticity
Poisson's ratio
factor of safety
direct shear
shear stress and strain
modulus of rigidity
single and double shear in pins
punching of holes in plates
bolted connections
bolted joints, centrally loaded
shear and bearing stresses in bolts
tension in bolted plates
welded connections
Welded joints centrally loaded
Butt welds - tensile stress
Fillet weld - shear stress
Weld size and length
Shear and bending in beams
Shear force and bending moment diagrams
Simply supported and cantilever beams
vertical point loads
uniformly distributed loads
bending stresses
bending stresses in beams
beam deflections
standard formulas
torque distribution diagrams
torsional shear stress
angle of twist on threaded bolts
friction
thermal stress

2. Stress levels

reference materials
standard operational procedures
verification

Teaching and Learning Resources

Unit Resource Manual for this unit of competency.
Textbook: Ivanoff, V; Engineering Mechanics; McGraw-Hill, Sydney, 1996