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Mechanical EngineeringDesign ProjectMECH 390Lecture 1

Contact DetailsInstructor: Dr. Sivakumar NarayanswamyOffice: EV BuildingRoom: 004 –189Phone: 848-2424 (7923)Office Hours: M 10:00 – 12:00 or by appointmente-mail: [email protected] Web Site: http://users.encs.concordia.ca/ nrskumar/materials for classes, tutorials and laboratory2

Engineering Today and Tomorrow Engineering profession along with technology has beenchanging in a way that companies need engineers whocan be very adaptive in complex dynamic workenvironment by being innovative, problem solver,critical thinker, good team player in diverse teams.Future belongs to those engineers, whoconstantly seek new knowledge and skills. 2017 Ayhan Ince. All rights reserved.3

Gear shift issueOld designNew design

What was missing from the new design? Function? Performance? Agreeable shape/ gorgeous touch? Comfort? Safety? Reliability? Ergonomics? Acceptance of the consumer? Cost?

What is the learned lesson? Safety first Further issues – Why engineers need a license to practice? What the license provides a practicing engineer? Liabilities? Who covers the loss due to errors or flaws in design? In case of a trial, what evidence one could bring to prove that adesign was carried out according to the regulations, standards andthe common science?

Who is responsible for a design flaw thatslipped un-noticed Difficult to foresee all the scenarios that a product will be subject to The consequences of misuse may be hidden in the analysis phase The ability to preview all possible dangerous situations will play amajor role in the success of a product The design trend – design a platform and not just a product Is it a group responsibility? If the consequences are serious, somebody will be in the position topay

The requirements of a product Any new design is “tested” by the users Their “verdict” makes the product successful Some of the requirements of a product: Functional nceHuman factorsEnvironmental friendlinessPrice

Creation of a product A completely new product A substitute to an existing product (why?) A new version/size/class of a product All design follow same flow: Initiation – generated by a need Planning the product and the design process (life of the product, customers,extension of objectives, life extension, protection, etc) Execution of the project (usually few teams collaborate) Monitoring and control (problems may come up) Closing

The slide of a projectResources, effort, benefits, all follow specific paths

The seven steps project Clear steps (start/end) Backtracking Vaguely detailed In real project the steps are blended Needs would not change but the means toachieve them may change If needs change, that is a new project

The embodiment of a project Selection of the bestconcepts: rmSoftware code (version)Mechanical sketchesCalculation/equationsTest dataElectrical schematics Data sheet of sourcedcomponents Flow charts State diagrams/timing diagrams Physical prototypes For sourcing components Formal process diagrams 3D models Assembly hierarchy diagrams Assembly specifications List of all parts List of critical suppliers

The conceptual component Previous experiences may lead to a general scheme of a design The concept must be feasible and clearly detailed and easy to beunderstood by the others A good design is simple to start with Features are added after the fundamental function is achieved A pro-active approach is recommended – towards the functionalityand safety when using the product, capability to add features andimprove performance Preview scenarios that would may occur when one is using theproduct (consequences, impact of malfunctioning, etc)

We will talk about This course is completely different from all the other classes – it looks like whatyou will be doing throughout your engineering professional career The requirements of the course What is expected from you The specifics of this class The course week by week The learned lesson from this class (expected) The expected results of the course The final project The documentation of the project The presentation Design principles and the metrics

What is expected from you To prove in depth thinking and to apply the engineering skills acquired so farin a creative effort – the final project Use your imagination and communicate the ideas using the most suitablemethods (writing, drawing, presentation, etc) Read and try to understand the provided documentation on moodle. If youfind other interesting documentation, please feel free to share it with us Identify and use the standards and regulations/codes besides calculationswhen take a design decision Each decision MUST be given an explanation which is also well documentedwith a proof Study the content of the textbook to acquire the basics of engineering designskills and be able to mark good grade in the class tests

What else is expected Pay attention to the lectures to be able to mark well in the classtests– attendance to the class is highly recommended Actively participate in the tutorials to be able to complete the tutorialmaterials well and on time. Use your imagination and group worktechniques to come up with a feasible design, model Start early the research for the essay on the selected technology Do your best to gathering the data to complete the requireddocumentation of the project on time Prepare and present your team work in a good and clear formalpresentation at the end of the course There is no formal final for this course

Graduate attributes Our engineering program is accredited by the CEAB (CanadianEngineering Accreditation Board) Specific requirements apart from engineering learning is requiredform you (and us) These requirements are the graduate attributes They are skills that are essential in your engineering career The performance in the attributes is a metric for the course and notstudents The results are not included in any evaluation and are transparent tothe students

The attributes for this courseATTRIBUTEInvestigationAn ability to conduct investigations of complexproblems by methods that include appropriateexperiments, analysis and interpretation of data,and synthesis of information in order to reachvalid conclusions.DesignAn ability to design solutions for complex, openended engineering problems and to designsystems, components or processes that meetspecified needs with appropriate attention tohealth and safety risks, applicable standards, andeconomic, environmental, cultural and societalconsiderations.Individual and team workAn ability to work effectively as a member andleader in teams, preferably in a multi-disciplinarysetting.INDICATORBackground and HypothesisFormulationDesigning ExperimentsLEVEL OFKNOWLEDGEADVANCEDADVANCEDConducting Experiments andCollection of DataAnalysis and Interpretation of DataADVANCEDDefine the objectiveINTERMEDIATEIdea generation and selectionINTERMEDIATEDetailed designINTERMEDIATEValidation and implementationINTERMEDIATECooperation and work ethicsADVANCEDContribution: Practical/ConceptualADVANCEDADVANCED

Some recommendations The tutorials – make the mostuse of them; ask the tutors anyquestion – hopefully they will beable to answer Ask the tutors to give you help inusing specific software tools Ask the tutors to give yousupport in developing themodels of the system The course is making use of theinformation that you haveacquired in MECH 211, MECH244, MECH 311, MECH 313,MECH 343, MECH 344, ENGR242, ENGR 243 and not only. The tasks as formulated are waydifferent from those where asole answer was good – in thiscourse open end type ofquestions are formulated andanswer of this kind are expected

Some recommendations (cont’d) The design tasks are vaguely formulated and For the first time you need to organizethe study a textbook by yourself as athe constraints may be fuzzily expressed –requirement and yield two tests on thatthis is always the casematerial You need to set the tasks and the constraints For the first time you will link theof a structured fashion that will enable youcalculations with a practical designand your group to state tasks and designexpresses in drawingssteps that are achievable Each of the defined task and its solution need You may need to return to a previousstage of the design and re-calculate orto be properly documented and provedre-draw given the new information The proof needs to be such expressed andfound during the process – design is anpresented to be easy to understand by theiterative processother colleagues and tutors as well as thesupervisors

Course OutlineThis course focuses on Mechanical Engineering Design Project, which includes: Recognizing and defining open ended engineering design problems Generating creative concepts and solutions Project planning Decision making for optimum design Modeling and analysis Prototyping and testing/verification Communication via engineering reports and presentations1. Students will work in teams to complete a Design Project. (40%)2. Students will take one midterm exam. (20%)3. Students will complete 10 tutorial assignments. (20%)4. Students will take 5 or more quizzes randomly distributed throughout thesemesters (20%). 2017 Ayhan Ince. All rights reserved.23

Success for MECH 390Pay attention to the lectures and to be able to do well in the classexam and quizzes.Attendance to the class is highly recommended.Study the provided documentation on the course website.Study the content of the textbook to acquire the basics ofengineering design skills.Actively participate in the tutorials to be able to complete the tutorialmaterials well and on time.To apply/use the engineering skills acquired so far in a creativeeffort –the design project 2017 Ayhan Ince. All rights reserved.24

Success for MECH 390Use your imagination and communicate the ideas using themost suitable methods (writing, drawing, presentation, etc)Identify and use the standards besides calculations when take adesign decision.Each decision/assumption MUST be given an explanationwhich is also well documented with a proof.Plan in project activities.Do your best to gathering all data to complete the requireddocumentation of the project on time.Prepare a final project report and present your team work in agood and clear formal presentation at the end of the courseThere is no final exam for this course. 2017 Ayhan Ince. All rights reserved.25

Specifics of MECH 390 courseThis is the first course where you “practice” more than youstudy.You will learn to work in teams and you will have targetedobjectives.You will learn about the limitations of time or resources andhopefully will be able to do it right in the capstone.You will be able to evaluate how realistic are your initial plans.If you do not learn from mistakes you will never be able toperform.Set realistic objectives –you have 12 weeks to work on theproject. 2017 Ayhan Ince. All rights reserved.26

Design ProjectThe primary goal of the Design Project is to create/design andbuild/verify “ Design an Amphibian System for HONDA CRV”The project will require imagination, knowledge, capacity of synthesis,analytical skills, planning, teamwork, etc.The tutorials will provide the environment to help you gain skills andknowledge for the design project.Please consider this project as an integrated design activity. 2017 Ayhan Ince. All rights reserved.27

Main Design ProjectObjective: The design of Honda 4x4 CRV (2014 model) vehicle will beretrofitted to be fully amphibious and propelled in the water at maximumspeed of 10 km/h (5.4 knots) by propeller(s) mounted one either sideand/or the rear of the vehicle: 2017 Ayhan Ince. All rights reserved.28

MECH 390 course Grading The one midterm exam (20% of the final grade)o It will be based on the textbook and materials discussed inthe class.o The exam will be held during lecture hours on the week of March5th . The quizzes (20% of the final grade)o 5 or more surprise quizzes randomly distributed over thecourse of 13 weeks.o No prior information regarding the date or the material forquizzes shall be given. 2017 Ayhan Ince. All rights reserved.29

MECH 390 course Grading The tutorials (20% of the final grade)o Start week #2, the week of January 15o Tutorials are scheduled in H-1065 / H-835o During the first tutorial, teams will be formed by 4 or 5memberso A plan will be made –weekly plan that will enable thecompletion of the project.o The tutorials will be run by TAs with experience in designo Each tutorial assignment counts for 2%. 2017 Ayhan Ince. All rights reserved.30

MECH 390 course Grading The Design Project (30% of the final grade)o The content of the project is provided in the course outline.o The submission will be on the day teams present their work.o A good project will provide the reader all the details that will beconvincing enough that the design is good/optimum.o The optimization of the project design is of more importance than thecomplexity.o The evaluation is carried out by the instructor and prorated amongteam members based on the peer confidential evaluations. Final presentation (10% of the final grade)o The presentation day –Monday April 16th and Tuesday April 17th,2018o Prepare about 12 -15 minutes talk (max. 3 min per presenter) 2017 Ayhan Ince. All rights reserved.31

The textbook It includes 10 chapters Most of it will be covered in lectures Some you can read on your own In addition, the course will have somecase studies

COURSE LECTURESIntroduction to Engineering DesignChapters 1 and 2 (Text Book)Quadcopter Dynamics Simulation and ControlNoteProbabilistic Considerations in DesignChapter 5 (Textbook