Welcome to this installment of MC² on vibration damping and shocks!
Vibration is mechanical oscillation (regular or otherwise) about some equilibrium — prone to becoming problematic in motor-driven motion designs where there’s looseness, backlash, windup, uneven effects from friction, machine-assembly imbalances, or shock loading. Noise is a manifestation of vibration that degrades the perceived quality of machines … and in many cases is an unacceptable byproduct of motion.
So as we explore in several MC² features, the ultimate goal for design engineers is to build and tune designs for minimal vibration (free or forced) and render unavoidable system vibration damped (dissipated) or isolated. That way, the machine can quickly settle back to equilibrium. We also explore a phenomenon related to that of vibration — that of shock. Check out the below for more.
Executive Editor, Design World
VIBRATION DAMPING + SHOCKS
Vibration Damping & Shocks Classroom Sponsored by
VIBRATION DAMPING + SHOCKS BASICS
Technical • Differences • Sizing • Protection
What are shock and vibration absorbers?
Motion is present in almost all industrial automation systems. Stopping or changing the direction of that motion releases kinetic energy, which can cause shock and vibration to occur.
Vibration damping: What’s the difference between passive and active methods?
Unlike typical static or dynamic loads, forces due to vibrations are difficult to predict, model, and account for when designing motion control systems.
What are negative-stiffness vibration isolators?
Protecting sensitive equipment from harmful vibrations can be done with either passive or active isolation systems, with the choice often being made on price, simplicity, and the level of protection required.
Vibration-mitigation and energy absorption technologies
What are gas springs? A technical primer
Gas springs, also called gas dampers, tension springs, or gas-pressure springs depending on the setup and context, are compressed-air or oil cylinders that install in motion designs to damp forces and return kinematic linkages and more complicated assemblies to default positions.
Increase uptime by controlling energy and vibration
When looking for a way to minimize damage and increase meantime between failures in your linear motion application, it is important to consider using energy absorption devices like shock absorbers and vibration isolators to control the kinetic energy of your system.
Look to ITT Enidine Inc. for high performance Wire Rope Isolators and Compact Wire Rope Isolators. The wire rope isolators have stainless steel cable and RoHS compliant aluminum retaining bars, which provides excellent vibration isolation.
Enidine Hydraulic Series industrial shock absorbers offer several solutions to energy absorption and shock application requirements. By either simply turning an adjustment knob, the damping force can be changed to accommodate a wide range of conditions allowing for wide variables in energy input or by employing one of our fixed orifice non-adjustable models.
Enidine's HD/HDN Series of heavy duty shock absorbers protect equipment from large impacts in applications such as automated storage and retrieval systems as well as overhead bridge and trolley cranes. They are available in a wide variety of stroke lengths and damping characteristics to increase equipment life and meet stringent deceleration requirements.
Enidine has a rich heritage of delivering highly engineered products that are reliable, durable and efficient. Our highly engineered adaptable products meet the growing needs of today’s challenging global industrial marketplace. Customers’ choose Enidine because we offer innovative and differentiated products at an exceptional value and customer service and support.
Highly Engineered Energy Absorption and Vibration Isolation Products