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Just-in-Time Approach to Integrate a Design Project into Mechanics of Materials

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Conference

2011 ASEE Annual Conference & Exposition

Location

Vancouver, BC

Publication Date

June 26, 2011

Start Date

June 26, 2011

End Date

June 29, 2011

ISSN

2153-5965

Conference Session

Teaching Mechanics

Tagged Division

Mechanics

Page Count

14

Page Numbers

22.987.1 - 22.987.14

DOI

10.18260/1-2--18228

Permanent URL

https://strategy.asee.org/18228

Download Count

365

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Paper Authors

biography

Joseph J. Rencis University of Arkansas

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Joseph J. Rencis is Professor of Mechanical Engineering at the University of Arkansas, Fayetteville. He was Head of the Department of Mechanical Engineering from 2004 to 2010. He held the inaugural endowed Twenty-first Century Leadership Chair in Mechanical Engineering from 2007 to 2010. From 1985 to 2004 he was professor in the Mechanical Engineering Department at Worcester Polytechnic Institute. His research focuses on boundary element methods, finite element methods, atomistic modeling, and engineering education. He currently serves on the editorial board of Engineering Analysis with Boundary Elements and is associate editor of the international Series on Advances in Boundary Elements. He is the current Past Chair of the ASME Mechanical Engineering Department Heads Committee, Current Past Chair of the ASEE Mechanical Engineering Division, and an ABET program evaluator. He currently serves as Chair-Elect of the ASEE Midwest Section. He also currently serves on the Academic Advisory Board of the College of Engineering at United Arab Emirates University. He received the 2002 ASEE New England Section Teacher of Year Award, 2004 ASEE New England Section Outstanding Leader Award, 2006 ASEE Mechanics Division James L. Meriam Service Award, and 2009 ASEE Midwest Section Service Award. Dr. Rencis is a fellow of ASME and ASEE. He received a B.S. from Milwaukee School of Engineering in 1980, a M.S. from Northwestern University in 1982, and a Ph.D. from Case Western Reserve University in 1985. V-mail: 479-575-3386; E-mail: jjrencis@uark.edu.

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biography

Hartley T. Grandin Jr Worcester Polytechnic Institute

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Professor Emeritus, Worcester Polytechnic Institute

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Abstract

Just-in-Time Approach to Integrate a Design Project into Mechanics of Materials This paper presents an approach developed and used by the authors to integrate a designproject into an introductory undergraduate mechanics of materials course using a just-in-timeapproach. One project that has been used in the past involves the hoist structure shown in thefigure below. The hoist is used to lift an object of weight W and is assembled with smooth pins andis symmetric about the XY plane. The hoist structure will be manufacturer in several models, eachwith a different maximum lifting capacity and overall dimension, but all with the same basicconfiguration. The manufacturer also offers the option of custom capacity and size of the basicdesign. Problems that are solved throughout our course and in the design project are based on allequations being formulated in symbolic form. One major advantage is that symbolic equations canbe solved for any problem type. Furthermore, the design process requires solving many differentproblems to obtain a satisfactory design. Each problem can have different known and unknownvariables. The design project shown below involves all or almost all topics, covered in an introductoryundergraduate mechanics of materials course. The design project is divided into the following sixphases: 1. force analysis; 2. pin connection stress analysis; 3. initial design of pins and members; 4.initial design of structure stiffness; 5. beam design and refined structure stiffness, and; 6. columnanalysis. The background required to complete each phase is based on the material covered up tothat point in the course. After a topic is covered in class, reinforced through homework andclassroom quizzes, the phase related to the topic area is assigned. After the second, fourth and sixthphases are completed, students are given the complete solution up to that phase.

Rencis, J. J., & Grandin, H. T. (2011, June), Just-in-Time Approach to Integrate a Design Project into Mechanics of Materials Paper presented at 2011 ASEE Annual Conference & Exposition, Vancouver, BC. 10.18260/1-2--18228

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