API RP 684 Paragraphs Rotodynamic Tutorial: Lateral Critical Speeds, Unbalance Response, Stability, Train Torsionals and Rotor Balancing
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API RP 684 Document Information:
Title
Paragraphs Rotodynamic Tutorial: Lateral Critical Speeds, Unbalance Response, Stability, Train Torsionals and Rotor Balancing
American Petroleum Institute
Publication Date:
Aug 1, 2005
Scope:
This document is intended to describe, discuss, and clarify the API
Standard Paragraphs (SP)
Section 6.8 which outlines the complete lateral and torsional
rotordynamics and rotor balancing
acceptance program designed by API to ensure equipment mechanical
reliability. Background material
on the fundamentals of these subjects (including terminology) along
with rotor modeling utilized in
this analysis is presented for those unfamiliar with the subject.
The standard paragraphs are introduced with references to the
appropriate background material to
enhance the understanding. This information is intended to be a
primary source of information for
this complex subject and is offered as an introduction to the major
aspects of rotating equipment
vibrations that are addressed during a typical lateral dynamics
analysis. It is not intended to be
a comprehensive guideline on the execution of rotordynamics analyses
but is intended to:
a. Provide guidance on the requirements for analysis;
b. Aid in the interpretation of rotordynamics reports; and,
c. Provide guidance in judging the acceptability of results presented.
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