Vibroakustična analiza pogonske jermenice pralnega stroja

Soklič, Tomaž (author), Čepon, Gregor (mentor), Boltežar, Miha (comentor)

Razvoj v industriji bele tehnike je dandanes naravnan v iskanje in uporabo ukrepov za pocenitev izdelkov. Posledično se kovinske komponente zamenjujejo s plastičnimi, ki so cenejše. Tovrstne sestavne dele je treba ponovno zasnovati in jih ovrednotiti s stališča statičnih in dinamičnih obremenitev, saj imajo polimerni materiali specifične lastnosti. Zaradi sodobnih trendov v smeri zmanjševanja hrupnosti gospodinjskih aparatov je pozornost treba nameniti tudi analizi vibroakustičnih lastnosti izdelka. V magistrskem delu je predstavljena konstrukcijska zasnova polimerne različice pogonske jermenice pralnega stroja. Najprej smo se seznanili z osnovami metode končnih elementov in metodo topološke optimizacije. Pregledali smo teoretične osnove zvočnega valovanja, hrupa in načine zmanjševanja hrupnosti naprav. Sledilo je snovanje nove polimerne izvedbe jermenice z numerično statično in dinamsko analizo. Na koncu smo novi koncept jermenice primerjali z obstoječim in podali zaključke.

• Language: Slovenian
• Keywords: jermenica hrup topološka optimizacija pralni stroj pretok zraka hitrost delcev tlak
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-105458
• Publication date in RUL: 30.11.2018

Secondary language

• Language: English
• Title: Vibroacoustic analysis of the drive pulley in washing machines

Abstract

Nowadays, development trends in the home appliance industry are oriented towards the measures to achive lower prices of the products. Consequently, metal components are replaced by cheaper models made of plastic. Such components need to be re-designed and evaluated from a static and dynamic point of view. Due to modern trends in reducing the noise of household appliances, special attention should be paid to the analysis of the product's vibroacoustic properties. In this master's thesis a structural design of the drive pulley in a washing machine is presented. Firstly, the basics of the finite element method and the topology optimization method is presented. Furthermore, we presented the design of a new polymer version of the pulley, which has been analysed numerically statically and dynamically. In the end, the new concept of the pulley was compared with the existing one and conclusions were presented.

• Keywords: pulley noise topology optimisation washing machine airflow particle velocity pressure