Matt is the founder of Structural Dynalysis. As an independent consultant, Matt brings an added layer of torsional dynamics expertise to 6D. Let’s go one-on-one with Matt to learn more about him and torsional vibration.
Can you tell us a little about your background?
My career in structural dynamics began at the University of Cincinnati where I worked as a co-op student in the field of automotive Noise Vibration and Harshness (NVH). After completing my Master of Science in Mechanical Engineering, I worked for several consulting firms before launching Structural Dynalysis in 2002. I specialize in structural dynamics, vibration testing & analysis, signal processing and driveline torsional dynamics. In addition to testing services, I provide Torsional Vibration Analysis (TVA) with comprehensive reporting tailored to the needs of the customer.
I’ve known Mike and Garth for over 25 years and have enjoyed collaborating on projects now and then over that time. This year I’m lending my expertise to the 6D team as a Senior Technical Specialist. I will help current and future 6D customers to leverage my experience in torsional dynamics vibration for troubleshooting existing applications and designing for reliability in new products applications.
Can you give us a general overview of torsional vibration?
Torsional vibration considers only the rotational (angular) response of an object, typically a shaft, rod, or driveline under the influence of torque fluctuations. Torsional vibration occurs when a pulsating or transient torque acts upon an object, causing it to accelerate along its axis of rotation. This can become a big problem when the frequency of pulsation coincides with a torsional natural frequency of the system.
Oscillations build to unacceptable levels, which over time, can lead to effects such as increased wear, reduced efficiency, and costly component failure. We’ve all seen the wine glass shatter when the singer hits the right note. This is the same concept, only much more expensive.
What is TVA and common applications of the technology?
TVA is the prediction of driveline response to torque pulsation using a mathematical model. The calculation is a streamlined finite element solution to predict dynamic angular response. This is extremely important in determining the vibratory behavior of rotating equipment. Engine manufacturers, for example, use TVA to assess the acceptability of the driveline system into which their engine is being installed; there are plenty of ways a poorly designed driveline can wreck the engine and lead to costly warrantee claims.
Common applications include any internal combustion engine driven machine such as pump systems, generators, marine drivelines, etc. Electric motor driven reciprocating compressors are also prone to having torsional problems and are often analyzed. From an upstream design perspective, understanding and mitigating torsional vibration is crucial to ensure the reliability and longevity of machines.
OK enough about work. What do you like to do in your spare time? Any hobbies or interests?
I do enjoy working in the wood shop, building anything and everything from cabinets and furniture to guitars. You name it and I’ve probably built it. On nice days, I like to get out on one of my classic BMW motorcycles, there are some great roads in the area. What else do you want to know? Maybe we should go have a beer and talk about it!
