http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박철희(Pak, Chul-Hui),조종두(Cho, Chong-Du),조기철(Cho, Ki-Cheol),김명구(Kim, Myoung-Gu) 한국소음진동공학회 2007 한국소음진동공학회 논문집 Vol.17 No.1
The cantilever beam with nonlinearity has many dynamic characteristics of nonlinear vibration. Nonlinear terms of a flexible cantilever beam include inertia, spring, damping, and warping. When the beam is given basic harmonic excitation, it shows planar and nonplanar vibrations due to one-to-one resonance. And when the one-to-one resonance occurs, the flexible beam shows different behaviors in those vibrations. For the one-to-one resonance occurring in each mode, the phase value of the planar vibration is different from that of the nonlinear vibration. This paper investigates the phase change and the phase difference between such planar and nonplanar vibrations which are caused by one-to-one resonance.
고속전철 진동소음해석 및 저감기술개발 : G-7과제개요 및 연구방향
이우식(Lee Usik),박철희(Pak Chul-Hui) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper introduces the outline of the ongoing G-7 project for the development of vibration and noise analysis and reduction technology for the Korea High Speed Train which will run at 350㎞/h. Extensively collected materials and data on the vibration and noise characteristics of high speed trains are summarized herein to reduce the research direction.