Linear Dynamic Analyses

Dynamic Analysis is know by many names and each contains subtle differences in required inputs as well as analytical basis. Borowski Engineering's Principal Engineer continued his education in this field to better understand these subtleties. The image below contains a few, but not all of the dynamic analyses that we can conduct at Borowski Engineering.

If you need an explanation of any or all of these analytical methods, you should call us today.

The basis for each of these analyses is the natural frequency (or modal) analysis. Briefly, everything vibrates at a natural frequency related to it's stiffness. If this natural frequency is excited with sufficient force, the vibrations may continue to increase in amplitude until destruction of the object, or conclusion of the exciting force. I invite you to search the web for the Tacoma-Narrows Bridge disaster to see the destructive potential of natural frequency.

This certainly doesn't mean that all objects will ultimately be destroyed by some excitation. It may take extreme force or the excitation may not exist in the object's environment, but understanding the natural frequency of critical objects may save you from placing objects in potentially harmful environments. As an example, consider a guitar. Place an acoustic guitar in front of the amplifier of an electric guitar. Strike one of the lower (deeper) strings, like the low-E or A string on the electric guitar and the coordinating string on the acoustic guitar will vibrate. Provide a sufficient length of time or sufficient strength of "pluck" on the string and the acoustic guitar string will vibrate with increasing intensity.

Borowski Engineering & Analytical Services, Inc.
1420 Polaris Dr.
Mobile, AL  36693
251.232.3723
email:  info@borowskiengineering.com