Advanced Vibration Control - CAT IV

This course is targeted at solving complex vibration problems involving transient and forced vibrations; resonance, isolation and damping in both structural dynamic and rotor dynamic systems. It is partial preparation for the Vibration Analyst Category IV Certification Exam. The workshops and demonstrations scheduled throughout the training course are used to illustrate theory and applications.

Sep 21-25, 2020

Antonio, TX

Advanced Vibration Control

Overview

This course is targeted at solving complex vibration problems involving transient and forced vibrations; resonance, isolation and damping in both structural dynamic and rotor dynamic systems. It is partial preparation for the Vibration Analyst Category IV Certification Exam. The workshops and demonstrations scheduled throughout the training course are used to illustrate theory and applications.

Instructor

BOB SAYER, P.E. is the President of the Vibration Institute and owner of Applied Structural Dynamics (Westerville, Ohio). He has over forty years of experience as a mechanical and structural engineering consultant to a wide range of industries including pulp & paper, mining & metals, fossil-fuel & nuclear power generation, petrochemical, food processing, glass manufacturing, and aerospace & defense. Mr. Sayer provides analytical and experimental dynamic analysis of mechanical equipment for design projects, structural and mechanical failure studies, and process reliability and efficiency studies. Mr. Sayer holds engineering degrees from Ohio University (BSCE), Cleveland State University (MSIE), and Purdue University (MSCE). He had the honor and fortune of collaborating with the late Art Crawford, a pioneer of vibration analysis, on numerous projects. Mr. Sayer is a regular contributor at technical conferences and has published over 50 technical articles and co-authored 2 chapters in “The Simplified Handbook of Vibration Analysis”.

FIVE INTERVIEW QUESTIONS about the course answered by the Instructor: https://www.vi-institute.org/qa-on-avc-advanced-vibration-control/

Course Materials

Course Notes (textbook)
Workshops containing examples, workshop problems, and equations
Course supplies (calculator, pen, notepads, and any other needed supplies)
Certificate of completion (3.2 CEUs)

Course Agenda

Monday 1:00 pm. – 5:00 p.m.
Tuesday – Friday, 8:00 a.m. – 5:00 p.m.
Optional Cat IV exam – Saturday, 8:00 a.m. – 12:00 p.m.

Registration Fee

$2,395 USD Nonmember ($2300 VI Members)

$100 expidited materials fee for registrations received within 1 week of course starting.

Course Content

Introduction
Effect of vibration level on fatigue, structural vs. mechanical vibration severity evaluation, industry specific severity standards.

Transient Free Vibrations
Damped and undamped free vibrations of single and multiple degree-of-freedom systems. Modal testing to determine natural frequencies, damping, and mode shapes. Intro to the concept of modal participation. Log decrement, equivalent spring and natural frequency calculations. Tuning natural frequencies to avoid resonance by changing stiffness and/or mass. Linear & non-linear stiffness, and temperature & strain rate effects on stiffness.
Workshop I: Free Vibrations

Forced Vibrations
Forced harmonic response, damping analysis, and base motion response. Forced response to periodic non-harmonic and impulse forces. Sensitivity of modes to placement of dynamic forces. Case histories involving force modification as a form of vibration control.
Workshop II: Forced Vibrations

Basic Rotor Dynamic Vibration Control
Single & multiple degree-of-freedom models, modal mass, mode shapes, limitations of different modeling techniques, support & rotor stiffness asymmetry, flexible impellers, gyroscopic effects, centrifugal stress stiffening, and Lomakin effect in pump rotors. Natural frequency tuning techniques for rotors.
Workshop III Rotor Dynamics

Basic Structural Dynamics
Dynamic response of structural components of machines and flexible floor framing systems.
Natural frequency tuning techniques to reduce vibration of structures. Theory and application of tuned Dynamic Vibration Absorbers (DVA) and Auxiliary Mass Dampers.

Rigid Foundations
Rules-of-thumb for foundation design. Single & multiple degree-of-freedom models. Soil-foundation interface stiffness and damping calculations. Uncertainties in natural frequency calculations for foundations. Natural frequency tuning methods for foundations.
Workshop IV: Vibration Control for Structures & Foundations

Isolation
Theory of dynamic force Isolation, advantages and disadvantages of different isolator types, stability requirements for isolation systems, decoupling of isolated systems from support system. Case histories involving proper and improper use of isolation.
Workshop V: Isolation

Systems subjected to Dynamic Pressure Pulsations
Sources of pulsations in pumps, fans & compressors, structural dynamics of piping and ductwork, acoustic resonance, vibration severity criteria for pipes, vortex shedding problems and solutions.

Get Certified

Certification Exams are offered:

  1. The day AFTER VI training courses 
  2. Anytime at VI offices
  3. At a USA location near you with a pre-approved VI proctor
  4. Through our International Representatives

How:

  1. Register for a course and exam
  2. Register for just the exam (if you already have the training requirement, or are getting training elsewhere)
  3. Find a USA proctor by contacting us
  4. Contact an International Representative in your country

The cancellation of and transfer to a training course within the same calendar year will be honored, provided that written notification is received by the Institute office via e-mail or mail no later than ten (10) business days before the first day of the scheduled course. If registration for a training course is cancelled without transfer to another course within the same calendar year, a $250 cancellation fee will be assessed. A $500 administrative fee will be charged for cancellations received less than ten (10) days from the start date of the registered training course. Additional cancellation fees will be applied for exam cancellations. Absentees for the course will not receive a refund. Please contact the Vibration Institute staff directly regarding discounts for multiple registrations from the same organization.