Frontera et al 2020b - Revision history

Cinmemj: Cinmemj moved page Frontera et al 2020a to Frontera et al 2020b

2020-02-05T14:05:36Z

Cinmemj moved page Frontera et al 2020a to Frontera et al 2020b

Cinmemj: Cinmemj moved page Draft Samper 691820313 to Frontera et al 2020a

2020-02-05T14:04:35Z

Cinmemj moved page Draft Samper 691820313 to Frontera et al 2020a

Cinmemj at 13:56, 5 February 2020

2020-02-05T13:56:19Z

Cinmemj at 13:40, 5 February 2020

2020-02-05T13:40:53Z

Cinmemj at 13:39, 5 February 2020

2020-02-05T13:39:05Z

Cinmemj at 13:28, 5 February 2020

2020-02-05T13:28:00Z

Cinmemj at 13:23, 5 February 2020

2020-02-05T13:23:51Z

Cinmemj at 13:20, 5 February 2020

2020-02-05T13:20:07Z

Cinmemj at 13:17, 5 February 2020

2020-02-05T13:17:26Z

Cinmemj at 13:15, 5 February 2020

2020-02-05T13:15:05Z

@@ Line 4,291: / Line 4,291: @@
 <div id='img-D.8'></div>
-{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;"
+{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: 60%;"
 |-
 |style="padding:10px;"|[[Image:Draft_Samper_691820313-monograph-nsv_freq.png|400px|Mode intensities for increasing values of Ω]]
@@ Line 4,299: / Line 4,299: @@
 <div id='img-D.9'></div>
-{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;"
+{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: 60%;"
 |-
 |style="padding:10px;"| [[Image:Draft_Samper_691820313-monograph-React_comparison.png|400px|Reaction torque for increasing values of Ω]]
@@ Line 4,307: / Line 4,307: @@
 <div id='img-D.10'></div>
-{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: 40%;"
+{| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: 60%;"
 |-
 |style="padding:10px;" |[[File:Draft_Samper_691820313_8123_ydisp.png|800px]]

@@ Line 294: / Line 294: @@
 |style="padding:10px;"| [[Image:Draft_Samper_691820313-monograph-Campbell_example.png|450px|]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" padding-bottom:10px;" | '''Figure 1.3:''' Example of Campbell diagram <span id='citeF-6'></span>[[#cite-6|[6]]]
+| colspan="1" style="padding-bottom:10px;" | '''Figure 1.3:''' Example of Campbell diagram <span id='citeF-6'></span>[[#cite-6|[6]]]
 |}

@@ Line 291: / Line 291: @@
 <div id='img-1.3'></div>
 {| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
-|-style="padding:10px;"
+|-
-|[[Image:Draft_Samper_691820313-monograph-Campbell_example.png|450px|]]
+|style="padding:10px;"| [[Image:Draft_Samper_691820313-monograph-Campbell_example.png|450px|]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" | '''Figure 1.3:''' Example of Campbell diagram <span id='citeF-6'></span>[[#cite-6|[6]]]
+| colspan="1" padding-bottom:10px;" | '''Figure 1.3:''' Example of Campbell diagram <span id='citeF-6'></span>[[#cite-6|[6]]]
 |}
@@ Line 300: / Line 300: @@
 To illustrate a little bit this section, Figure [[#img-1.3|1.3]] shows the Campbell diagram of a compressor rotor blade. Bold curves represent natural frequencies of the structure, while the straight lines show the exciting frequencies. Each intersection between them is a resonance point. Here, rotation introduces an '''stiffening''' effect: natural frequencies increase with the spin speed.
 It is important to remember that the concept of critical speeds and the Campbell diagram only apply to linear systems, although a more arbitrary definition of these speeds can be used in the case of nonlinear systems, referring the speed at which greater amplitudes are found.
 ====Frequency and time domains====

@@ Line 2,756: / Line 2,756: @@
 {| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;"
 |-
-|style="padding:10px;"|[[Image:Draft_Samper_691820313-monograph-campbellnew.png|588px|Campbell diagram: comparison between modal prediction and SVD results.]]
+|[[Image:Draft_Samper_691820313-monograph-campbellnew.png|588px|Campbell diagram: comparison between modal prediction and SVD results.]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" style="padding:10px;"| '''Figure 6.2:''' Campbell diagram: comparison between modal prediction and SVD results.
+| colspan="1" style="padding-bottom:10px;"| '''Figure 6.2:''' Campbell diagram: comparison between modal prediction and SVD results.
 |}
@@ Line 2,764: / Line 2,764: @@
 Recall that the obtained results shown in [[#D.1.2 Constant angular velocity|D.1.2]] are just '''predominant''' patterns of the dynamic response. Thus, the RSVs representing reigning vibrations are no longer pure harmonics, but mostly the result of a certain combination of natural frequencies. In most cases, they match almost perfectly to a sine or cosine function, and hence the predominant frequency is easy to determine. That is not the case of the RSVs associated to axial vibrations (natural modes 2 and 7 from Figure [[#D.1.1 Natural modes and frequencies|D.1.1]]), which are the result of more than one predominant frequency. For instance, the pure axial motion has a <math display="inline">0</math> Hz frequency associated to it, caused by the offset in displacements the centrifugal force induces. To visualise the frequencies involved in the vibration phenomena, Figure [[#img-D.11|D.11]] displays the '''power spectral density''' estimation of the sum of the right side vectors.
 ====Singular values====

@@ Line 4,310: / Line 4,310: @@
 {| class="floating_imageSCP" style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: 40%;"
 |-
-|style="padding:10px;" |[[File:Draft_Samper_691820313_8123_ydisp.png|500px]]
+|style="padding:10px;" |[[File:Draft_Samper_691820313_8123_ydisp.png|800px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;" | '''Figure D.10:''' Local transverse displacements at the tip of the beam for different values of <math>\Omega </math>. Numeric results and its SVD approximation are compared.

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