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Matrix Torsion of Rods

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SKU: ST0386 Categories: Structures, Structures Kits Tag: MATRIX

Description

Description

This kit allows students to understand the torsional elastic properties of rods. Students choose from a selection of test rods and fit them to the experimental work panel. They can adjust the distance between the chucks for tests on varying rod length. Each chuck includes pointers that work with the scale on the platform for accurate positioning.

Students apply angular deflection to the specimen using a chuck which includes a precision potentiometer to measure the angular deflection, which is then displayed on the LCD display. The other chuck connects to a load cell to measure the resulting torque, which is displayed on the other LCD display. Students use textbook beam equations to predict the deflection and torque relationship and compare the calculated results with the measured results. This helps confirm the reliability of the textbook equations and the accuracy of the experiment results.

This product includes a set of rods of different metals for comparison of the elastic properties, dimensions and polar second moment of area (‘J’ value). It also allows the student to vary the effective length of the rods to see how this affects the magnitude of deflection for a given torque. The angle and load cell output is connected to the USB interference and can have the data acquisition through the USB cable.

Learning Objectives

• Torsion formula
• Rod length and angle of twist relationship
• Rod material and angular deflection— the elastic (shear) modulus (G)
• Rod cross-sectional dimensions and torsion—the polar second moment of area (J)

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University of Waterloo

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University of Toronto

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York University

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Concordia University

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University of Waterloo

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École Polytechnique de Montreal

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University of Waterloo

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Daniel Saulnier
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Daniel Saulnier
CCNB

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