서지주요정보
구조물에 작용되는 충격력 및 이에 의한 동적응력 해석에 관한 연구 = A study on the analysis of impact force and dynamic stress of a structure caused by an airborne impact
서명 / 저자 구조물에 작용되는 충격력 및 이에 의한 동적응력 해석에 관한 연구 = A study on the analysis of impact force and dynamic stress of a structure caused by an airborne impact / 김대환.
저자명 김대환 ; Kim, Dae-Whan
발행사항 [서울 : 한국과학기술원, 1986].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4103727

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 8608

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A method was presented to predict impact forces and dynamic strains when a structure is impacted from airborne state. It was found that impact caused dynamic strains and acting forces can be estimated as a function of impact velocity, structure modal parameters and contact stiffness. The modal parameters were derived by Finite Element Method at the condition of free-free boundary, and the contact stiffness can be measured. The impact velocity can be assumed or can be given as a design parameter. First, the impact forces and responses of the structure were analyzed theoretically in the LAPLACE domain and the actual impact force and dynamic displacements of the structure were calculated by inversing the LAPLACE domain outputs. Then the dynamic stresses were determined utilizing strain-displacement relationships. The suggested technique was verified by experiments with a simple beam. The expected and measured impact forces and dynamic strains were in good agreements with the assumptions that the structure is linear and the structure remains contact at the contacting point after airborne collision. A method to calculate equivalent static loads to give identical dynamic strains were also studied.

서지기타정보

서지기타정보
청구기호 {MME 8608
형태사항 iii, 30 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Dae-Whan Kim
지도교수의 한글표기 : 박윤식
지도교수의 영문표기 : Youn-Sik Park
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 수록
주제 Strains and stresses.
Impact.
Modal analysis.
Aerodynamic load.
응력 해석. --과학기술용어시소러스
동하중. --과학기술용어시소러스
충격 효과. --과학기술용어시소러스
모드 해석. --과학기술용어시소러스
구조 역학. --과학기술용어시소러스
Structural analysis(Engineering)
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