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- Modal_analysis abstract "Modal analysis is the study of the dynamic properties of structures under vibrational excitation.Modal analysis is the field of measuring and analysing the dynamic response of structures and or fluids when excited by an input. Examples would include measuring the vibration of a car's body when it is attached to an electromagneticshaker, or the noise pattern in a room when excited by a loudspeaker.Modern day modal analysis systems are composed of transducers (typically accelerometers and load cells), or non contact via a Laser vibrometer, an analog-to-digital converter frontend (to digitize analog instrumentation signals) and a host PC (personal computer) to view the data and analyze it.Classically this was done with a SIMO (single-input, multiple-output) approach, that is, one excitation point, and then the response is measured at many other points. In the past a hammer survey, using a fixed accelerometer and a roving hammer as excitation, gave a MISO (multiple-input, single-output) analysis, which is mathematically identical to SIMO, due to the principle of reciprocity. In recent years MIMO (multi-input, multiple-output) has become more practical, where partial coherence analysis identifies which part of the response comes from which excitation source.Typical excitation signals can be classed as impulse, broadband, swept sine, chirp, and possibly others. Each has its own advantages and disadvantages.The analysis of the signals typically relies on Fourier analysis. The resulting transfer function will show one or more resonances, whose characteristic mass, frequency and damping can be estimated from the measurements.The animated display of the mode shape is very useful to NVH (noise, vibration, and harshness) engineers.The results can also be used to correlate with finite element analysis normal mode solutions.".
- Modal_analysis wikiPageExternalLink animations.asp.
- Modal_analysis wikiPageExternalLink mspace.html.
- Modal_analysis wikiPageExternalLink modal.hu.
- Modal_analysis wikiPageExternalLink what-is-vibration-modal-analysis-fatigue-analysis.
- Modal_analysis wikiPageExternalLink www.isma-isaac.be.
- Modal_analysis wikiPageExternalLink dynamic-testing-aerospace-structures.
- Modal_analysis wikiPageExternalLink modal-analysis.
- Modal_analysis wikiPageExternalLink modal.
- Modal_analysis wikiPageExternalLink MPE_SDOF.php.
- Modal_analysis wikiPageExternalLink experimental-modal-analysis.
- Modal_analysis wikiPageExternalLink msma98.pdf.
- Modal_analysis wikiPageExternalLink CONF-IMAC-TOP.asp.
- Modal_analysis wikiPageID "7542417".
- Modal_analysis wikiPageRevisionID "588773971".
- Modal_analysis hasPhotoCollection Modal_analysis.
- Modal_analysis subject Category:Earthquake_engineering.
- Modal_analysis subject Category:Mechanical_engineering.
- Modal_analysis comment "Modal analysis is the study of the dynamic properties of structures under vibrational excitation.Modal analysis is the field of measuring and analysing the dynamic response of structures and or fluids when excited by an input.".
- Modal_analysis label "Analisi modale".
- Modal_analysis label "Analiza modalna".
- Modal_analysis label "Análise modal".
- Modal_analysis label "Modal analysis".
- Modal_analysis label "Modalanalyse".
- Modal_analysis sameAs Modalanalyse.
- Modal_analysis sameAs Analisi_modale.
- Modal_analysis sameAs Analiza_modalna.
- Modal_analysis sameAs Análise_modal.
- Modal_analysis sameAs m.0264xj_.
- Modal_analysis sameAs Q1416137.
- Modal_analysis sameAs Q1416137.
- Modal_analysis wasDerivedFrom Modal_analysis?oldid=588773971.
- Modal_analysis isPrimaryTopicOf Modal_analysis.