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[진동 소음부문] 마찰로 인한 디스크 브레이크의 유한요소 열탄성 불안정성 해석
최지훈(Jihoon Choi),김도형(Dohyung Kim),이인(In Lee),차희범(Heebum Cha),강민구(Mingu Kang) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_2
A finite element analysis is performed to investigate frictionally excited thermoelastic instability in automotive disk brakes. This instability leads to the localized high temperature contact regions such as hot spots in the automotive brake. It is assumed that linear perturbations on the constant speed solution vary sinusoidally in the circumferential direction and grow exponentially in time. This assumption in the themoelastic and heat conduction equations leads to a linear eigenvalue problem for the exponential growth rate for each wave number. The computational results are compared with an analytical solution for a layer sliding between two planes. The present method gives goods estimates for the critical rotational speed. Also. the effects of friction (pad) material properties on the critical characteristics are investigated.
패션 셀렉트샵 인테리어 디스플레이의 VMD 구성요소에 관한 연구
최지훈 ( Jihoon Choi ),김미현 ( Mihyun Kim ) 복식문화학회 2017 服飾文化硏究 Vol.25 No.2
This study examines the role of visual merchandising (VMD) in creating effective interior displays for fashion “select shops”(shops that carry a wide selection of brands) amid the recent changes in consumption trends, with consumer needs becoming increasingly individualized and diversified. Fashion select shop interior displays can be categorized as self-service, showcase, counter, and environmental display spaces. Regarding the VMD elements that contribute to effective interior displays, we reached the following conclusions. First, in self-service displays, in order to heighten sales efficacy, display elements should be presented in such a way as to enable customers to select products with ease by themselves. Second, the mere presence of showcase displays was found to be insufficient; if, however, select shops use showcase displays to arrange products according to the flow of customer traffic, enabling the creation of a gentrified atmosphere for products, this may contribute to a differentiated image of brands, heightening perceived product value. Third, in counter displays, having a harmonious arrangement of display and presentation elements promotes sales by inspiring customer confidence. Fourth, regarding environmental displays, it is important for stores to have attractive interior designs and decorations in order to reproduce settings in which products are actually used, as this can inspire interest in products and promote customers` purchasing intention.