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Session 3220

Teaching One degree-of-freedom vibration on the WWW

N W Scott * , S Hiranniah +, M A Mannan + and B J Stone*

+ Department of Mechanical and Production Engineering, The National University of Singapore. * Department of Mechanical and Materials Engineering, The University of Western Australia.

Abstract

This paper describes an extensive set of WWW pages that include the transient and forced vibration of a single degree of freedom system. There are Java applets that allow animation, parameter variation and self-test questions with diagnostic feedback. In addition there are more conventional notes with access to theoretical derivations. As far as possible there are links to other pages where definitions of terms are given and illustrated. As the volume of material increased to even include non-linear vibration the question of ease of navigation arose. It is proposed that recommended route options are a possible aid to students. It would of course be possible to explore the material in a free browsing manner but recommended routes for particular requirements are available. Thus a user who wishes to just look up definitions can follow one route, a student wishing to learn at a deeper level may follow another route and so on. The authors have effectively used sign posts similar to those available in National Parks so the preferred route may be chosen but users may choose to explore in their own way. It is concluded that such predefined routes may be very helpful to those who would otherwise get lost in the large amount of material available.

1. Introduction

The use of the WWW in teaching is becoming widespread. However much of the material produced simply presents titles codes and course content. Some lecturers have produced WWW versions of their lecture notes but have not made use of any of the other possibilities afforded by the WWW. This applies to the topic considered in this paper, that of teaching vibration. A search of the WWW found only a few sites that had any material on vibration. Appendix A lists some sites of interest and what they offer. From previous experience using computers in teaching it has been found [1,2] that a subject which involves motion can be better comprehended by students if they can observe the motion. It is even more beneficial if the student is able to interact with the computer and see the effects of making changes. Finally it has been found [3-5] that improved exam performance can be achieved by having on-line quizzes, especially if the problems have immediate diagnostic feedback. When the currently

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Hiranniah, S., & Scott, N. W., & Stone, B. J., & Mannan, M. A. (2000, June), Teaching One Degree Of Freedom Vibration On The Www Paper presented at 2000 Annual Conference, St. Louis, Missouri. 10.18260/1-2--8756