City University of Hong Kong Course Syllabus offered by Department

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City University of Hong Kong Course Syllabus offered by Department of Mechanical and Biomedical Engineering with effect from Semester B in 2015 / 16

Part I

Course Overview Mechanical Design

Course Title: MBE3010 Course Code: 1 semester Course Duration: 3 credits Credit Units: B3 Level: Medium of Instruction:

English

Medium of Assessment:

English

(Course Code and Title)

MEEM2003 (offered until Semester A 2011/12)/MBE2003 Mechanics or MBE2040 Basic Mechanical Engineering Principles or MBE2109 Engineering Mechanics (offered from Semester A 2017/18)

Precursors:

MBE3118 Mechanics of Materials (offered from Semester A 2017/18)

#

Prerequisites :

(Course Code and Title)

Equivalent Courses:

MEEM3010 Mechanical Design

(Course Code and Title)

Exclusive Courses:

Nil

(Course Code and Title)

#

Prerequisites which are not part of the Major Requirement are waived for students admitted with Advanced Standing. Note: Students may repeat a course, or an equivalent course, to improve course grade only if the previous course grade obtained is D or below.

Course Syllabus_MBE3010 Dec 1, 2015

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Part II 1.

Course Details

Abstract (A 150-word description about the course)

This course aims to provide students with knowledge and skills in applying elementary design analysis principles, basic design procedures, and design data from standards and catalogues generally provided by manufacturers, for the design of mechanical elements commonly used in mechanical devices as well as power and motion transmission systems.

2.

Course Intended Learning Outcomes (CILOs) (CILOs state what the student is expected to be able to do at the end of the course according to a given standard of performance.)

No.

Weighting* Discovery-enriched (if curriculum related applicable) learning outcomes (please tick where appropriate) A1 A2 A3 1. Identify the working principles of various kinds of 25% √ √ commonly used mechanical components. 40% √ √ 2. Apply suitable theories and basic engineering principles and procedures to perform mechanical design calculations with due consideration to the choice of appropriate materials and their mechanical strengths. 3. Select appropriate engineering design data from standards 10% √ and catalogues for standard components (such as bearings, springs and mechanical fasteners) which are provided by manufacturers. 25% √ 4. Solve real problems in power and motion transmission systems, such as a shaft carrying gears, pulleys, cams, clutches and mounted on bearings with spring supports, with constraints in environmental temperature, or availability of space, or static and dynamic loading conditions, and materials etc. * If weighting is assigned to CILOs, they should add up to 100%. 100% A1:

A2:

A3:

CILOs

Attitude Develop an attitude of discovery/innovation/creativity, as demonstrated by students possessing a strong sense of curiosity, asking questions actively, challenging assumptions or engaging in inquiry together with teachers. Ability Develop the ability/skill needed to discover/innovate/create, as demonstrated by students possessing critical thinking skills to assess ideas, acquiring research skills, synthesizing knowledge across disciplines or applying academic knowledge to self-life problems. Accomplishments Demonstrate accomplishment of discovery/innovation/creativity through producing /constructing creative works/new artefacts, effective solutions to real-life problems or new processes.

Course Syllabus_MBE3010 Dec 1, 2015

3

3.

Teaching and Learning Activities (TLAs) (TLAs designed to facilitate students’ achievement of the CILOs.)

TLA Lecture + Tutorial

4.

Brief Description

CILO No. 1 2 3 Take place in classroom setting    which consist of lectures and student activities in between.

Hours/week (if applicable) 4 

3 hrs/week

Assessment Tasks/Activities (ATs) (ATs are designed to assess how well the students achieve the CILOs.)

Assessment Tasks/Activities

CILO No. 1 2 3

Continuous Assessment: 40%    Assignment/Test Examination: 60% (duration: 3 hours) * The weightings should add up to 100%.

Weighting*

Remarks

4 

40% 100%

For a student to pass the course, at least 30% of the maximum mark for the examination should be obtained.

Course Syllabus_MBE3010 Dec 1, 2015

4

 

5.

Assessment Rubrics (Grading of student achievements is based on student performance in assessment tasks/activities with the following rubrics.)

Assessment Task 1. Examination

2.Assignment and Test

Course Syllabus_MBE3010 Dec 1, 2015

Criterion

Excellent (A+, A, A-) Explain the fundamental concepts and High working principles, select proper machine elements and solve problems in the design process. Describe the mechanical design concepts High and principles and provide solution to related design problems.

Good (B+, B, B-) Significant

Adequate (C+, C, C-) Moderate

Marginal (D) Basic

Significant

Moderate

Basic

Failure (F) Not even reaching marginal levels Not even reaching marginal levels

5

  Part III 1.

Other Information (more details can be provided separately in the teaching plan)

Keyword Syllabus (An indication of the key topics of the course.)



Mechanical properties of materials: Stress and strain. Principle stress. True Stress and true strain. Hardness. Impact properties. Stress concentration. Yield. Fracture and Fatigure. Toughness. Viscoelastic behaviour.



Design of shafts for power transmission: Combined bending, torsion and axial loading. Critical diameter.



Design of keys and keyways, and couplings: Bending, torsion and combined loads, stresses in keyed shafts; rigid and flexible couplings.



Design of brakes and clutches: Plate and cone clutches. Block and band brakes.



Design of pulleys and belts: Flat-belt and V-belt drives. Centrifugal tension



Design of gears and gear trains: Involute tooth profile. Epicyclic gear train. Spur and helical gears.



Design of bearings: Journal bearings. Anti-friction bearings. Bearing life prediction. Selection of ball bearings and roller bearings.



Design of spring: Types of springs. Analysis of stiffness. Spring wire size, number of coils, pitch, overall dimensions etc.



Design of cams and cam followers: Displacement curves and cam profiles.



Design of mechanical fasteners: Threaded fasteners. Power screws for motion and power transmissions.

Critical speed.

2. Reading List 2.1 Compulsory Readings (Compulsory readings can include books, book chapters, or journal/magazine articles. There are also collections of e-books, e-journals available from the CityU Library.)

1. 2.

Richard Budynas and Keith Nisbett, Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering), 10th Edition, McGraw Hill, 2014. Steven R. Schmid, Bernard J. Hamrock and Bo. O. Jacobson, Fundamentals of Machine Elements, Prentice-Hall International, 2013.

2.2 Additional Readings (Additional references for students to learn to expand their knowledge about the subject.)

1.

Robert L. Mott, Machine Elements in Mechanical Design, 5th Edition, Prentice Hall, 2013.

Course Syllabus_MBE3010 Dec 1, 2015

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City University of Hong Kong Course Syllabus offered by Department

City University of Hong Kong Course Syllabus offered by Department of Mechanical and Biomedical Engineering with effect from Semester B in 2015 / 16 ...

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