Adjust the length of the ruler and flick it again. That momentary flick will cause the ruler to vibrate at some frequency. Grab yourself a flexible ruler, clamp one end of it on the edge of a table (yes, like a cantilever beam) and flick the other end. It’s the frequency at which object like to vibrate in the absence of any external force. One of the basic characteristics of any dynamic structure is its resonant (or natural) frequency. It even comes with a cool lab guide! Natural Frequency You can build different structural systems, visualize the movements and deformations of their elements, and feel the structures using your own hands. The kit consists of a set of modular parts (bars, rigid connectors, braces, etc.), which are connected through magnets allowing a variety of combinations. Throw in a shake table, and you get to analyze structures under dynamic loading. The kit allows you to quickly build interactive physical models that simulate the static behavior of architectural structures. Márcio took the time to give me a demo, and I bought a Mola Structural Kit I right on the spot knowing that it would be a fantastic companion to our ST I-40. Earlier this year, I ran into Márcio Sequeira, founder, and CEO of Mola at the EERI conference in Vancouver, British Columbia. My favorite these days is the structural kit produced by a crowdfunded company called Mola. When it comes to shaking things, our customers have used a variety of structures with the Shake Table I-40, ranging from our own Active Mass Damper (AMD-1) to LEGO blocks to K’Nex structures. I personally like the Shake Table I-40 because of its portability it’s easy to transport and set up in a lab environment or the classroom. It’s a robust and reliable tool to have around. With a small footprint, it boasts some impressive specs: a stoke of 40 mm, a resolution of under 2 microns, a maximum accelerating of 1 g, an operational bandwidth of 10 Hz, and an open software architecture. So what is the Shake Table I-40? It is a portable single-axis table capable of creating custom motion profiles (including real earthquake data). In particular, I want to show how you can easily demonstrate a couple of basic structural dynamics concepts in the classroom. In this blog post, however, I want to focus on one of our lesser talked about products: our classroom-friendly shake table – the Shake Table I-40. Since then, our Shake Table II and Shake Table III have enabled academics around the globe to conduct cutting edge research in structural dynamics and earthquake engineering. We entered the academic shake table business over 20 years ago. Quanser Global Sustainability Award 2023.Controls & Dynamics Lab – Qube Teaching Studio.Industrial Applications & Process Control.
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