Salt Lake City, Utah
June 23, 2018
June 23, 2018
July 27, 2018
Students often view both analytical results and experimental results with supreme confidence without critically evaluating the assumptions behind them. In the Mechanical Vibrations course at Rose-Hulman Institute of Technology lab experiences have been developed to help address this deficiency in students’ understanding of models, experiments, and their limitations. In the first lab, students are required to determine the first natural frequency of a cantilevered beam experimentally using several different approaches and then compare their findings to analytical results. The lab has a final project involving an experimental modal test and the creation of a finite element model of a structure of the students’ choosing. Students are required to propose explanations for the differences in the results from the test and the finite element model. Assessment results show that students have developed a much more sophisticated understanding of analysis and testing as a result of these experiences, and by the end of the course, they use appropriate technical terminology when discussing the differences between test and analytical results.
Cornwell, P., & Jones, S., & Kawano, D. T. (2018, June), If We Can’t Model a Cantilevered Beam, What Can We Model? Helping Students Understand Errors in Vibration Experiments and Analyses Paper presented at 2018 ASEE Annual Conference & Exposition , Salt Lake City, Utah. https://peer.asee.org/29639
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