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Operating Deflection Shapes
ARTeMIS Extractor and ARTeMIS Analyzer includes time as
well as frequency domain Operating Deflection Shapes (ODS). These features allow
you to study the overall vibration pattern either over a time segment or at a
specific frequency.
ODS analysis is very beneficial in
combination with Operational Modal Analysis as it determines and
visualizes the combination of the actual forcing functions acting on
the structure and the dynamic behavior of the structure. Results can
be shown as displacement, velocity or acceleration in SI, Imperial
or user-defined units (Time Domain ODS). Decimation and various
filters (low-pass, band-pass, band-stop and high-pass) can be
applied to frequency limit the analysis.
Both time and frequency domain ODS is
available in all versions of ARTeMIS Extractor and ARTeMIS Analyzer.
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Time Domain Operating
Deflection Shapes
The key features of the
Time Domain Operating Deflection Shapes are:
- Time domain
animation test setup by test setup of all frequency
content.
- View the animation
as a movie or step through the movement, time step
by time step.
- Units (displacement,
velocity, acceleration) and scaling can be selected
on the fly.
- The measurements can be
signal processed using the same Signal Processing
Control dialog as used by the modal analysis
techniques.
- AVI movie creation of
animations.
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Time Domain Operating Deflection Shapes analysis of a high rise
building subject to an earthquake.
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Frequency Domain
Operating Deflection Shapes
The
key features of the Frequency Domain Operating
Deflection Shapes are:
- Frequency domain
animation of all test setup using multiple reference
estimation.
- Unscaled or scaled
animation using phased assigned spectrum with a
specific reference.
- View the animation
as a movie or step through the movement, frequency step
by frequency step.
- Units (displacement,
velocity, acceleration) and scaling can be selected
on the fly.
- The measurements can be
signal processed using the same Signal Processing
Control dialog as used by the modal analysis
techniques.
- AVI movie creation of
animations.
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Frequency Domain Operating Deflection
Shapes analysis of multiple test setup measurements of a car. |