How to Build Industrial Computers that Resist Vibration and Shock

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WHITE PAPERVibration and ShockAsymmetrical Balance: Most computers are fairly symmetrical,simply because symmetrical systems are easier for engineers todesign and develop. However, symmetrical systems also tend to bemore resonant in severe conditions, and particularly in movingvehicles. An asymmetrical design is an effective way to reducesystem resonance and minimize vibrations and shock. A systemthat is asymmetrically balanced can disrupt energy wavetransmissions and reduce vibrations. This concept can be appliedto off-the-shelf hard disks to create a cost-effective yet reliablestorage solution for moving vehicles.Asymmetry helps fragile components, such as hard disks, avoid resonanceSystem-wide Design PerspectiveAn effective industrial computing system needs to approach antivibrationand anti-shock from a comprehensive system-wideperspective. A thorough understanding of the narrow componentperspective is important, but it is also important to understandhow each component fits together into the big picture of a broaderanti-vibration and anti-shock technology. This means thathardware, thermal design, and component engineers need tocollaborate to create the optimal, integrated system solution.Mortise and Tenon JointsThe constant movement of high vibration environments causesconstant stress on the mechanical joints in a device. Rigid screws,joints, and bindings perform poorly in these environments. Incontrast, a mortise and tenon joint is simple, strong, and flexible.Tenon joints are a unique strategy that bestow greater vibrationand shock resilience on computing systems.A mortise and tenon joint is a simple, strong, and flexible way to create a mechanical jointCopyright © 2010 Moxa Inc.3
WHITE PAPERVibration and ShockMaterial SelectionAluminum Alloy: When it comes to exterior casing, aluminumalloy is a superior material compared to sheet metal, because it ismore rugged, stronger, and can endure more vibration and shock.Aluminum alloy is light, easy to shape, and also has high heatconductivity, all of which provides a reliable operating platform forthe entire system.Aluminum is a rugged alloy highly resistant to vibration and shockDamping Material: Damping material is used to reduce theimpact of vibration and shock. As part of an overall anti-vibrationstrategy, it is particularly useful as a tool to fine-tune thecharacteristics of the anti-vibration and anti-shock design.Damping material placed at just a few key locations can substantially improve the overallsystem’s vibration and shock resistance.Copyright © 2010 Moxa Inc.4
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