MECH07010 2019 Mechanics/Dynamics 301

General Details

Full Title
Mechanics/Dynamics 301
Transcript Title
Mechanics/Dynamics 301
Code
MECH07010
Attendance
75 %
Subject Area
MECH - Mechanics
Department
MENG - Mech. and Electronic Eng.
Level
07 - NFQ Level 7
Credit
05 - 05 Credits
Duration
Semester
Fee
Start Term
2019 - Full Academic Year 2019-20
End Term
9999 - The End of Time
Author(s)
Sean Dalton
Programme Membership
SG_EMECL_B07 201900 Bachelor of Engineering in Mechanical Engineering SG_EPREC_B07 201900 Bachelor of Engineering in Precision Engineering and Design SG_EPREC_J07 201900 Bachelor of Engineering in Precision Engineering and Design
Description

This module addresses the analytical aspects the behaviour of materials.

Mechanics analysis of the stresses induced in material under a variety of load types including direct loading, bending and torsion thought the study of complex stresses. The subject also analysis the strain, deformation, deflection and twisting which result. The subject will also loading required to cause failure under combined / complex loading.

 

Learning Outcomes

On completion of this module the learner will/should be able to;

1.

Analyse stresses induced by bending moments and torque in beams and shafts

2.

Analyse stresses due to combined bending and torsion.

3.

Determine beam deflection for standard load cases

4.

Determine stresses in components using strain gauges.

5.

Determine factor of safety against failure under complex loading using failure theories

6.

Solve dynamic problems involving inertia, linear and angular displacement, velocity and acceleration.

Module Assessment Strategies

 

 

Indicative Syllabus

Free body diagrams: Analysis of forces in everyday items: vice grips, front loader, crane, 2d framework, hoists, 3D space frame.

Bending stresses, Determination of I for rectangular, round sections and complex sections (parallel axis theorem), combined bending and direct stresses (eccentric loading), oblique loading (in plane stresses).

Torsion, Torque/shear stress/angle of twist relationship, torsion of not circular section, indeterminate torsion (shafts in series and parallel), combined bending and torsion. Equivalent bending moment / torque.

Complex stresses: Mathematical and graphical solution of complex stress problems. Principal stresses, pure shear, 3d stresses:  problems involving direct, bending and shear stress.

Slope / deflection of beams. Slope and deflection of beams for standard load cases. Derivation of standard formulae by direct integration method.

Strain gauges: Use of strain gauges in Tension, Bending, Torsion and bi-axial loading. Practical aspects of strain gauge application and monitoring.

Built in beams, Determination of bending moment and deflection for built in beams, carrying concentrated, distributed loads.

Failure theories. Max. Shear stress (tresca), Max. shear strain energy (Von Misses), stress concentrations.

Buckling of struts (Euler theory), end conditions, eccentric loading. Laterally loaded struts, concentrated and distributed loads. Euler validity limit

Dynamics: Revision of Equation, periodic motion (pendulum, scotch yoke mechanism), Dynamics of rotation and moments of inertia.

 

Mechanics/Thermodynamics Practicals and tutorials

Bending stresses in beams

Torsion in shafts

Application and use of strain gauges.

Finite Element Analysis of Beam deflection. 

Finite Element Analysis of stress concentration.

Coursework & Assessment Breakdown

Coursework & Continuous Assessment
30 %
End of Semester / Year Formal Exam
70 %

Coursework Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Continuous Assessment Continuous Assessment Assessment 30 % OnGoing 1,2,3,4,5,6
             
             

End of Semester / Year Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Final Exam Final Exam Final Exam UNKNOWN 70 % End of Term 1,2,3,4,5,6
             
             

Full Time Mode Workload


Type Location Description Hours Frequency Avg Workload
Lecture Lecture Theatre Lecture 4 Weekly 4.00
Practical Science Laboratory Mechanics/Thermodyanics practical 2 Fortnightly 1.00
Independent Learning UNKNOWN Study 2 Weekly 2.00
Total Full Time Average Weekly Learner Contact Time 5.00 Hours

Module Resources

Non ISBN Literary Resources

Essential Reading:

Mechanics of Materials EJ Hearne, Elsevier (2018)

Mechanics of Materials, RC Hibbeler, Prentice Hall (2018)

Mechanics of Materials, Beer, McGraw Hill (2018)

 

 

Other Resources

None

Additional Information

None