naa a22 4500 510823718 CHVBK 20180411083546.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s12541-013-0076-0 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0076-0 Investigation of the frictional impulse induced abnormal noise in a refrigerator [Elektronische Daten] [Dong-Gyu Lee, Jeong-Hyun Park, Ki-Hong Park, Byung-Kuk Ha, Hyeong-Sik Kim, Sang Park] A large refrigerator has complicated inner structures such as many shelves and racks to hold products. Therefore, when the door of a refrigerator is opened and closed, there is a variation of the temperature inside the refrigerator. Therefore, an abnormal noise in the form of a ticking sound is generated by the relative distortion and slip between the inner structures. In this work, we tried to define the generation mechanism of this abnormal noise inside of a refrigerator clearly using experimental and numerical approaches while also studying how to reduce it. To do this, we conducted an experimental setup for measuring noise, temperatures, and the inner pressure and conducted a finite element analysis on the main factors of noise based on the experimental results. This study suggests a way to reduce this type of noise which can be utilized in the essential design stage. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Refrigerator nationallicence Negative Pressure nationallicence Abnormal Noise nationallicence Stick-slip Mechanism nationallicence Frictional Impulse nationallicence F d : Kinetic friction force nationallicence F im ( t ) : Transient force nationallicence δ : Dirac delta nationallicence µ s : Static friction coefficient nationallicence µ k : Kinetic friction coefficient nationallicence m : Mass of element nationallicence k : Stiffness coefficient nationallicence c : Damping coefficient nationallicence T F : Temperature nationallicence P psig : Gage pressure nationallicence P r : Converted Pressure nationallicence Lee Dong-Gyu Graduate School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut Park Jeong-Hyun Graduate School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut Park Ki-Hong LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut Ha Byung-Kuk LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut Kim Hyeong-Sik LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut Park Sang ERC/NSDM, School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/4(2013-04-01), 559-566 2234-7593 14:4<559 2013 14 12541 https://doi.org/10.1007/s12541-013-0076-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0076-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Dong-Gyu Graduate School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut NATIONALLICENCE 700 1- Park Jeong-Hyun Graduate School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut NATIONALLICENCE 700 1- Park Ki-Hong LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut NATIONALLICENCE 700 1- Ha Byung-Kuk LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut NATIONALLICENCE 700 1- Kim Hyeong-Sik LG Electronics, Gaumjeong-dong, Seongsan-gu, 642-711, Changwon, South Korea aut NATIONALLICENCE 700 1- Park Sang ERC/NSDM, School of Mechanical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/4(2013-04-01), 559-566 2234-7593 14:4<559 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer