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This pilot study was designed to explore students’ misconceptions concerning the atomic mechanisms of plastic deformation within the context of a laboratory exercise. Sophomore materials engineering students performed, analyzed, and compared results from both a traditional tensile test of metals and a molecular dynamics simulation tensile test of a nanowire. The latter was performed using the Nano-Materials Simulation Toolkit on nanoHUB.org. Students’ responses to in-lab worksheet questions, their written lab reports, and their responses to a related exam question were qualitatively analyzed. Recommendations are made for better integration of the simulation and traditional tensile test components of the lab.

Students’ Struggles to Explain the Atomic Behavior of Metals in a Tensile Test Lab Supported by a Molecular Dynamics Simulation