사단법인한국소음진동공학회 The Korean Society for Noise and Vibration Engineering

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저널레터 : Trans. Korean Soc. Noise Vib. Eng., Vol. 28, No. 5 한국소음진동공학회 2018-10-22
첨부파일
2018년 10월 제 28권 제 5호 통권 244호
Z-드라이브 프로펠러용 탄성커플링의 설계와 동특성
Flexible Coupling Design and Dynamic Characteristics on the Z-drive Propeller
이돈출 · 이가향 · 벙광다오
Donchool Lee, Gahyang Lee and QuangDao Vuong
Propulsion shafting system applying diesel engine with reduction gear as prime mover generally installs an elastic coupling between the engine and the intermediate shaft. This coupling normally isolates the vibratory torque excited by diesel engine or the excess transient torque and moment occurring due to external impact ...
Wiener Filter를 이용한 보 구조물 위 장비의 능동 진동 절연 성능 해석
Performance of Active Vibration Isolation for Equipments on Flexible Beam Structures Using Wiener Filters
오한음 · 홍진숙 · 정의봉
Han-Eum Oh, Chinsuk Hong, Weui-Bong Jeong
This paper dealt with the active vibration isolation for a preliminary evaluation of the performance numerically. The vibration and noise generated by equipments are transmitted to the platform structures. The transmitted vibration causes negative influences on the life and reliability of the equipment and the structure due to breakage ...
낙하 시험을 통한 완충 소재의 물성치 획득과 유한요소 충격 해석 모델의 검증
Acquisition the Property of Cushioning Material with the Drop Test and Verification with Finite Element Shock Analysis
길근석 · 이성배 · 전종근 · 조기한 · 조영환
Geun-Suk Gil, Sung-Bea Lee, Jong-Geun Jeon, Ki-Han Cho, Yong-Hwan Jo
The shock by impact on the product can be divided indirect impact that occur when the packed product is hit or dropped during transport and direct impact that occur accidentally, such as a mistake while the user is using the product. Especially the drop shock that occurs during use by the user varies depending on the user’ posture ....
환경소음에 의한 피해의 경제적 가치 추정:
군사격장 주변 토지 가격 분석
Evaluating the Economic Value of Damages from Environment Noise:
Analysis of Land Prices Around a Military Live-fire Complex
이민주 · 박인권 · 장서일 · 이재관
Minju Lee, In Kwon Park, Seo Il Chang, Jae Kwan Lee
This study estimates the economic value of the damage caused by the noise by analyzing land prices in the area around a military live-fire complex (LFC). To do this, we create a noise map based on the noise level measured in the LFC and surrounding area, and combine it with the data of 10 years of assessed value and characteristics for land in the surrounding area ...
혼합 경계를 가진 임의 형상 음향 공동의 고정밀도 고유치 추출 기법 개발
Extraction of Highly Accurate Eigenvalues of Arbitrarily Shaped Acoustic Cavities with a Mixed Boundary
강상욱
Sang Wook Kang
An extended NDIF (non-dimensional dynamic influence function) method is proposed for the eigenvalue analysis of arbitrarily shaped two-dimensional acoustic cavities with a mixed boundary, which consists of the rigid-wall and open boundaries. The original NDIF method was already developed for cavities with the rigid-wall boundary by the author ...
스펙트럴 요소법을 이용한 연료전지 파워팩의 진동 거동 분석
Investigation of Vibration Characteristics for Fuel Cell System Using Spectral Element Method
고형철 · 안상근 · 이동활 · 박준홍
Hyeongcheol Koh, Sangkeun Ahn, Donghwal Lee, Junhong Park
In this study, the vibration characteristics of the hydrogen fuel cell power pack installed on a construction vehicle were analyzed. An analytical model was proposed to reflect the vibration behavior. Using the proposed model, the vibration modal characteristics of the hydrogen fuel cell power pack were predicted. The vulnerable parts of the power pack ...
난류 경계층 가진에 의한 소나돔 음향창 구조물의 음향 방사 파워
Radiated Sound Power from a Acoustic Window of Sonar Dome Due to the Turbulent Boundary Layer Pressure Fluctuations
한승진 · 정병규 · 정우진
Seungjin Han, Byung-Kyoo Jung, Woo-Jin Jung
This paper presents analysis results on the acoustic radiated power from the rubber-inserted flat acoustic window of sonar dome, which is excited by pressure fluctuation of turbulent flow. Analysis is based on the well-known RKU theory, Corcos model and modal approach. It is found that increasing the loss factor has less effect on decreasing the radiated sound power ...
빌트인 냉장고의 기계실 소음저감에 관한 연구
Method to Reduce the Noise of the Machine Room of a Built-in Refrigerator
윤준호 · 김원진
Jun Ho Yun, Won Jin Kim
This study presents the design and analysis of a perforated panel system (PPS) that is installed in the machine room of a built-in household refrigerator to achieve noise reduction performance. First, the major noise source is found to be a cooling fan inside the machine room. Second, a PPS is proposed to reduce the noise of the cooling fan ...
전달행렬법을 이용하여 지반진동을 받는 전단구조물의 응답해석
Response Analysis of Shear Structure Subjected to Ground Vibration Using the Transfer Matrix Method
조찬우 · 이준성 · 이정윤
Chan U Jo, Joon-Seong Lee, Jung Youn Lee
Shear story structures are widely used in industrial equipment structure and building design but are often vibrated during the vibration of the ground. Ground vibration is caused by many variables such as bearthquake, mechanical vibration, vehicle and human steps. As a result, a study on the vibrational response of this type of structure is important to ...
전달행렬법을 이용한 레버형 반공진 진동 절연기 특성 연구
Study on Performances of the Lever Type Anti-resonance Vibration Isolator Using Transfer Matrix Method
윤종환 · 이형일
Jong-Hwan Yun, Hyeongill Lee
Transfer matrix for the lever type dynamic anti-resonance vibration isolator (L-DAVI) is defined by the vector type four pole parameter method. Defined matrix is applied to a 2-DOF vibratory system with an L-DAVI to obtain the transfer matrix for the total system. The accuracy of the transfer matrix for the L-DAVI is validated by comparing system accelerance ...
반공진을 이용한 대역 차단형 비틀림 진동 절연기의 토크 전달률 해석 및 측정
Torque Transmissibility Analysis and Measurement of Band-stop Type Torsional Vibration Isolators Using Anti-resonance
마이 반 응옥 · 윤종환 · 김기우
Mai Van Ngoc, Jong-Hwan Yun, Gi-Woo Kim
This study presents the investigation of new type of torsional vibration isolator utilizing an anti-resonance induced by planetary gear sets. This type of torsional isolator generates the anti-resonance frequency capable of effectively attenuating torsional vibration induced by an internal combustion engine those in a specific range ...
기전연성효과를 고려한 차량용 전기모터의 진동해석
Analysis of Vibration of Electric Motors with the Consideration of One-way Electro-mechanical Coupling
김승욱 · 유상모 · 정의봉 · 홍진숙
Seung-Uk Kim, Sang-Mo Ryu, Weui-Bong Jeong, Chinsuk Hong
As modern society uses more electric motors due to the environmental regulation policy and the energy depletion, the vibration problem of electric motors become important. In this paper, the vibration characteristics of electric motors are analyzed with the consideration of structural-electromagnetic coupling effects ...
대형레이다 수송 동특성 외란 규격 정립 및 내구성 분석
Environmental Specification Establishment of Transport Dynamic Property for Large Radar and Durability Analysis
신동준 · 이상정 · 이종학 · 강광희 · 진형석 · 김관성
Dong-Jun Shin, Sang-Jeong Lee, Jong-Hak Lee, Kwang-Hee Kang, Hyoung-Seog Jin, Kwan-Sung Kim
Since the large radar is exposed to the vibration & shock load of the road during vehicle transport, core radar sensors such as an antenna array element including a digital transmitter receiver module (DTRM) should be designed to be safely protected. In this study, vibration and shock environment analysis was carried out in accordance with the procedure for analyzing ...
켑스트럼 분석을 이용한 생산라인에서의 에어컨 블로워 소음불량 검출
Detection of Air-conditioner Blower Noise Defect in the Assembly Line Using Cepstrum
이동현 · 오현수 · 홍진숙 · 정의봉 · 안세진
Dong Hyeon Lee, Hyeon Soo Oh, Chinsuk Hong, Weui-Bong Jeong, Se-Jin Ahn
In the work process for detecting an air-conditioner noise defect in the assembly line, a method for detecting defects more efficiently and quantitatively than a subjective auditory sense of an operator is required. A noise signal analysis method that can be applied in a non-contact manner requires a process of separating the background noise of the assembly line ...
탄소섬유적층 각도에 따른 CFRP 평판의 실내소음 특성
Interior Noise Characteristics Inside of Enclosure of CFRP Composite Plates Made of Different Carbon Fiber Lamination Angles
방성일 · 김연수 · 백지선 · 이상권
Sungil Bang, Yeun Soo Kim, Jiseon Back, Sang-Kwon Lee
Recently, the researche on the weight lightening of the vehicle body for increasing the fuel efficiency of automobile have been actively carried out. One way to reduce the weight is to change the material applied to the car body. In recent years, CFRP laminated plates, which has lower density and similar strength to conventional metals ...
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The Korean Society for Noise and Vibration Engineering
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