서지주요정보
횡방향 충격을 받는 보의 초기 거동해석 및 충격력 복원에 관한 연구 = A study on transient response of an impacted beam and reconstruction of impact force from measured strain signal
서명 / 저자 횡방향 충격을 받는 보의 초기 거동해석 및 충격력 복원에 관한 연구 = A study on transient response of an impacted beam and reconstruction of impact force from measured strain signal / 박형순.
저자명 박형순 ; Park, Hyung-Soon
발행사항 [대전 : 한국과학기술원, 1994].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8004199

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 94005

휴대폰 전송

도서상태

이용가능

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반납예정일

초록정보

Impacted beam is popularly confronted at many engineering problems. Many studies on this subject have been published, most of which are focused on either the calculation of the response or the prediction of the impact forces. When the impulse response function is known, both the response and force analyses can be executed by the convolution and the deconvolution approach. Noting that the impact occurs within a very short period, in the order of micro-seconds, it takes time when the impacted beam is deflected at a certain point apart from the impacted point. Therefore, the conventional mode superposition method is not good to analyze the impact phenomenon exactly at the very early instant of impact; the wave propagation technique can give more accurate results. The impulse response functions (force-strain relations) for Euler-Bernoulli and Timoshenko beams are considered. The response of a beam to a transverse impact force, including reflection at the boundary, is numerically obtained with the convolution approach using the impulse response function obtained by Laplace transform. Using this relation, the impact force history is determined in the time domain and results are compared with those from Hertz's contact law. In the case of an arbitrary point impact, the location of the impact force and its time-history can be simultaneously found. The parameters of impact force model are identified using the recovered force and compared with the Hertz's contact model. In order to verify the proposed algorithm, measurements were done using an impact hammer and a steel ball drop test and these results are also compared with the simulated values.

서지기타정보

서지기타정보
청구기호 {DME 94005
형태사항 x, 163 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Hyung-Soon Park
지도교수의 한글표기 : 박윤식
지도교수의 영문표기 : Youn-Sik Park
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 151-156
주제 Impact.
Beam dynamics.
Strains and stresses.
충격 효과. --과학기술용어시소러스
티모센코보. --과학기술용어시소러스
단순보. --과학기술용어시소러스
진행파. --과학기술용어시소러스
동적 회복. --과학기술용어시소러스
Transients (Dynamecs)
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