20.500.12556/RUL-94845 Numerična in eksperimentalna modalna analiza elektromotorja SPOKE 240 Numerical and experimental modal analysis of electromotor SPOKE 240 Pri razvoju prototipnega motorja SPOKE 240 smo predvidevali, da se bodo pri obratovanju pojavile težave z resonančnimi nihanji in povečanim hrupom. Motor z neustrezno lastno dinamiko kljub dobremu izkoristku ni dober ne za proizvajalca ne za kupca, ker je glasen, oddaja vibracije in ima zaradi utrujenosti materiala krajšo življenjsko dobo. Lastno dinamiko strukture lahko napovedujemo s specializirano programsko opremo, vendar pa po navadi teoretične napovedi precej odstopajo od realnih vrednosti. V ta namen smo prototipni motor analizirali numerično in eksperimentalno ter numerične rezultate s prilagajanjem parametrov modela čim bolj približali eksperimentalnim. Rezultat je model z lastno dinamiko, ki je zadovoljivo podobna realni. Na takem modelu lahko nato preizkušamo geometrijske in materialne spremembe, ki bi izboljšale lastno dinamiko motorja. Tak način analize je ugodnejši predvsem zaradi krajšega časa razvoja motorja in znižanja stroškov razvoja. During development of electromotor SPOKE 240 it was assumed that there will be certain problems with resonant vibrations and increased noise during operation. A motor with inappropriate dynamic properties is not suitable for the manufacturer nor the customer because it is loud, emits vibrations and has a shorter life expectancy due to increased vibration fatigue. Structural dynamics could be predicted with specialised software; however, theoretical predictions usually deviate from measured values. That is the main reason why the motor was analysed numerically and experimentally in this work. The numerical data were fitted to the experimentally acquired data with the use of numerical model parameters updating. This results in a numerical model with structural dynamics sufficiently similar to the real model. Various geometric and material changes can then be applied to improve numerical model. This could also improve structural dynamics of motor and provide shorter development time and lower costs of development. vibracije resonanca hrup življenjska doba frekvenčna prenosna funkcija numerični model eksperiment ujemanje vibrations resonance noise life expectancy frequency transfer function numeric model experiment matching true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2017-09-08 12:15:09 2017-09-08 12:15:13 2023-10-27 12:45:32 0000-00-00 00:00:00 2017 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 199802 630.pdf 630.pdf 1 DF63E922FE99648494975500B826627F cc2c213e9ae62281092687c2f0c909b311d2474d87d62f68740224b0c74b0da2 9c689089-a1b3-11eb-a523-00155dcfd717 20.500.12556/rul/12a6b99e-71ab-466a-9ae5-1e4ee206c22c https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=103295 Fakulteta za strojništvo 0 0 0