Vibration and Industrial Machines
How Vibration Affects Equipment Reliability and Efficiency
As vibration analysis experts, DRV Consulting is deeply familiar with the connection between vibrations and their effect on machinery. We want to share this knowledge with our clients to educate and help them become better operators of these machines. On this page, you will learn more about vibration, its impact on industrial equipment, and why the design and post-installation assessment of your machines matter.
What is Vibration?
Vibration is the oscillation of a mass or series of masses about an axis of neutral position. The frequency of these oscillations depends on the magnitude of the masses and the stiffness of the springs. The vibration amplitude, or size, is influenced by the forces acting on the system and the damping present.
In simpler terms, vibration occurs when components move back and forth rapidly. In industrial settings, this can be caused by imbalances, misalignment, or external forces acting on the equipment.
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Torsional Vibration
This is a specific type of vibration involving angular oscillations of a mass or series of masses about a rotational axis. This type of vibration is particularly significant in rotating and reciprocating equipment such as engines, pumps, compressors, electric motors, couplings, and connected equipment. The frequency and amplitude of torsional vibrations are determined by the mass moments of inertia, the torsional stiffness between the masses, and the torques and damping in the system.
Torsional vibrations are most often unobservable by human senses and require specialized vibration testing to identify.
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Why Does This Matter to Machine Operators
You can often see, feel, or hear linear vibrations—for example, when operating a chainsaw or working near rotating machinery. However, torsional vibrations in industrial applications are usually invisible and inaudible. They occur within drive trains rotating at high speeds, and the components are often enclosed within machinery frames, making them inaccessible.
Even if accessible, the magnitude of these vibrations is usually so small (often measured in millidegrees) that detecting them without specialized equipment is nearly impossible. Undetected torsional vibrations can lead to significant issues over time, affecting the performance and lifespan of your equipment.
Prevent Torsional Failures on Your Machines
Seemingly minor torsional vibrations can cause severe equipment damage to drive trains and connected equipment. These issues often remain hidden until a catastrophic failure occurs, resulting in unexpected downtime and costly repairs or replacements.
Torsional failures are costly because they typically require replacing major components or entire equipment. However, the most significant cost often comes from lost revenue due to extended periods of inoperable machinery.
At DRV Consulting, we leverage our extensive experience in vibration analysis and on-site testing capabilities to identify potential problems early. Our consulting services aim to prevent vibration failures before they happen, saving you time and resources.
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