Spring 2016 Course Attendee Reviews:

Practical Rotordynamics for Real Mafchinery

April 25 - 28, 2016 in Charlottesville, VA

Instructors: Malcolm E. Leader, Mark Corbo, Erik Swanson


DyRoBeS:  Evaluations, Comments     
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Thanks again to all of the participants!


Spring 2016 DyRoBeS Feedback Results

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Responses to "What was particularly helpful about the course?"

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Responses to "What would you recommend changing about the course?"

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Responses to "Now that you have completed this course, what additional training (if any) would be helpful?"

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Other comments or feedback:

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Spring 2016 Rotordynamics Short Course

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Excellent/YesGoodOKNot greatPoor/No
1The instructors knowledge of rotordynamics was:1911
2The pacing of the course was:71121
3The amount of material covered was:1641
4The amount of interaction encouraged was:101011
5Was your interest held?201
6Was your time well spent in the course?201
7Would you recommend this course to others?201
8Would you recommend this group of instructors to others?21

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Responses to "What was particularly helpful about the course?"

  • Bearings and lectures on real word designs
  • First day from Erik and Mark was the most useful
  • Basics on day one were excellent
  • The use of case studies to illustrate the theory
  • Analytical approach of equations used; chart application for tests
  • Very knowledgeable instructors; enjoyed the fundamentals of lateral and torsional analysis; some interesting case studies
  • Bearing explanations were most helpful; torsional analysis; fatigue
  • Presented a very good combination of basic theory & practical application to design and trouble shooting
  • Field cases excellent, app
  • Field cases excellent - application on theory
  • Case studies with problem solving approach really showed application of rotordynamics very well
  • Torsional vibration analysis & examples; API specs; workshop examples
  • Learning about all the variables to be considered in a rotordynamics analysis
  • The course offered a really good overview and it has provided a path forward to continue.
  • General view of rotordynamics and understand how critical it is.
  • Material repetition
  • Case studies, any question was answered.
  • It's a great introduction to rotordynamics analysis. The fundamental theory and practical case studies covered in the class are very helpful.
  • Rather than performing analysis I will be specifying 3rd party analyses for municipal clients. I will also be reviewing analyses reports and responses from manufacturers. A portion of the course addressing challenges and solutions to issues between the parties involved in this arrangement may be useful.


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Responses to "What would you recommend changing about the course?"

  • I would like to have this in separate courses. One for design and one for field engineers
  • Too much torsional detail
  • Maybe go through workshops instead of the case studies
  • Add another day on the course
  • Make it slightly less "packed" and more "detailed" in basics for fundamentals of lateral rotordynamics. Full mastery is not expected on part of the student so fundamentals that can be retained would be more helpful as opposed to more information based instructions
  • Have a little more insight on changes incorporated in API684 to be
  • Include the workshops/review; there are varying degrees of knowledge between people taking the course. It is easy to let more experienced people drive the assumed base knowledge. Don't assume. Some lectures were too text heavy use images/charts to demonstrate concepts.
  • Having the presentation names listed in the agenda match the presentation names on the jump drive
  • Provide a bit longer breaks between presentations since there is a large amount of information covered
  • Short segment on instrumentation, field testing
  • Add content for non-rotordynamics specialist. Some of the case studies helped in this. Maybe how to see or spot rotor issues/potential issues expanded.
  • A little more fundamental basics at the beginning is synchronous, description of VFD's early, vibration basics - a few more interactive models
  • Better explain how to determine all variables (inputs) required to perform an analysis. Stiffness, dampening, etc.
  • I would suggest adding more pictures, specially when showing concepts of bearings and systems.
  • Try to reduce the number of slides with texts and include more images. Pictures or use the flipchart to explain. Images would help non-experts to follow.
  • All reference numbers to lecture titles. I would like to have one lecture that gives rule of thumb for design of perfect rotor/bearing system (5-10 graphs and formulas for common cases of turbomachinery and pump). Give more pictures and cross sections of analyzed machines, bearings, rotors, failed machines and parts.
  • I would like to see a version of this course more geared towards end users rather than analysts. For example, help the end users to be aware of problems necessary analysis data tests required when purchasing a new system or retrofit an old system.
  • If possible it would be helpful to see video or even get a laboratory, hands on experience


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Responses to "Now that you have completed this course, what additional training (if any) would be helpful?"

  • Design detailed on bearing
  • How to apply; Dyrobes training
  • Specific example cases implemented in software (eg Dyrobes) would be helpful
  • Application use on field to incorporate material learned, such as analysis for compressor, rotor, etc.
  • More rotordynamic fundamentals; expand my knowledge of shaft like components; plan to read through many of the reference papers/texts
  • More experience will help answer this question
  • Maybe a hands on simulation course where there are "test" cases to be designed in a rotordynamic program. Work can be done to apply what was learned in this class to fix rotordynamic issues. Also, a bearing only course and a seal only course.
  • I was looking forward to the software training. Too bad not enough people registered and it was cancelled.
  • How to become an "expert" in rotordynamics
  • The next step will probably be a training on Xl Rotor because it is the software my company uses.
  • More on modeling and vertical pumps, bearing stiffness(roller) and on structure stiffness & damping.
  • I would keep lunch at course room.


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Other comments or feedback:

  • In lectures ask the participants to follow along with worksheet and have one for each lecture
  • Lunch, keep as is; seemed that the main purpose of course was to convey how complicated rotordynamics is and that it should be left to experts rather than doing it ourselves. Very practical but was missing some of the do-it-yourself steps.
  • Excellent stuff
  • Very informative and pleasant
  • Personally, happy to get out of the classroom @ lunch, but lunch was ok too; found Mark/Erik good teachers even with complex concepts Can tell that Malcolm extremely knowledgeable, and enjoyed case studies, however, I found he assumed too much that everyone's knowledge was near his and could have been better at explaining case concepts more clearly.
  • I liked the lunch setup, increases mingling; would like dinner too. Would break the ice more.
  • Provided lunch was nice because it eliminated time issues that can come w/going out to lunch in an unfamiliar city. However it would be nice, if the hotel allows, to have some of the local places deliver food.
  • Classroom lunch is nice to interact with other students and instructors. Since I still take notes on paper it would be nice if all display slides had page numbers. I realize PDF's have numbers but on display would be nice.
  • Overall great course, it definitely expanded my knowledge of rotordynamics and is applicable to my job. The meal/lunch together was nice to talk with instructors and others about their experience and thoughts on subject matter.
  • Onsite lunch is good; need morning snacks; onsite accommodations good; downloaded slides were missing slides presented Provide references for all equations.
  • I believe the lunch on the course was interesting because avoid delays on the schedule and provides more opportunities to interact (4 lunches x 1 dinner).
  • I liked the option of lunch as part of the course to promote interaction.
  • I liked having lunch served in the room. It was very convenient and allowed us to meet others. It also gave time to handle work tasks in the available time. Overall course and setup were excellent.
  • Lunch in allows some socialization and probably facilitates getting back to course work on schedule. That said, a dinner allows some socializing outside normal hours - which may be more beneficial as the interaction happens away from the work atmosphere. Perhaps an approach of "some of us will be eating at..." with individuals invited to participate if they want and at their own expense may allow both kinds of interaction. Thanks very much.