Unsymmetrical Bending and Shear Centre (Next Generation Structures)

One of a range of experiment modules that fit to the Structures platform (STS1, available separately), the product helps students understand symmetrical and non-symmetrical bending of three different beam shapes, including an equal ‘L’, a ‘U’ and rectangular. It also finds the shear centre of the channel (‘U’) beam.

For the symmetrical and non-symmetrical tests, a chuck clamps a beam while allowing rotation on its axis and allowing loads to be applied at various angles. Load applied at the free end produce resulting deflections, measured by a pair of precision indicators. Students plot their results on a Mohr’s circle which allows them to find the experimental Principal Second Moments of Area and position of the principal axes. These may be compared to those for the arbitrary section axes and the values calculated by textbook beam equations. This helps to confirm the reliability of the textbook equations and the accuracy of the experiment results.

For shear centre tests, a chuck clamps the ‘U’ section beam. A plate clamped to the free end allows various off set loads to twist the beam. Students apply loads at various off sets and use the indicators to determine when the twist is zero, thus corresponding to the shear centre position.

This product includes a Vernier Caliper for accurate measurements of the beam cross-sections. The deflection indicators have their own displays, but they can connect to the USB interface nub of the Structures platform for computer display and data acquisition (VDAS® Onboard).

*There are 21 different experiments in the Next Generation Structures range. View them all in this easy to view flyer.

DefleX® is a complementary tool designed to introduce students to the concept and technique of Digital Image Correlation (DIC). This product is compatible with our DefleX®-3D product that uses two video cameras to track the movement of materials during a dynamic event. They are complete and compact systems for measuring full-field displacements and strains over a material’s surface in two and three dimensions, offering students a digital blended learning experience as part of their engineering courses. 

Key Features:

• One of a range of experiment modules that teach structures principles
• Fits to the Structures platform (STS1) for ergonomic use and space-saving storage
• Includes specimen beams of three different cross-sectional shapes for increased experiment range
• Two different study areas in one product: shear centre and bending
• High-resolution indicators for accurate measurements
• Supplied with a storage tray to keep smaller items safe
• Includes Vernier caliper to allow measurement of cross-section
• Works with user-friendly software (VDAS®)
• Compatible with our DefleX® system