서지주요정보
다축하중하에서의 피로균열발생 수명예측 시스템 개발에 관한 연구 = A study on development of the life prediction system for fatigue crack initiation under multiaxial loading
서명 / 저자 다축하중하에서의 피로균열발생 수명예측 시스템 개발에 관한 연구 = A study on development of the life prediction system for fatigue crack initiation under multiaxial loading / 최재형.
저자명 최재형 ; Choi, Jae-Hyung
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8007123

소장위치/청구기호

학술문화관(문화관) 보존서고

MADE 97021

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

It is very important to evaluate the fatigue life for multiaxial loading because almost all structures are subjected to multiaxial loading rather than uniaxial loading. In this regards, a study on development of the life prediction system for fatigue crack initiation under multiaxial loadings is performed. For this study, several multiaxial fatigue life prediction theories proposed so far, like maximum principal strain theory, maximum shear strain theory, maximum distortion energy theory, Sines model, Brown and Miller theory, Lohr and Ellison theory, Socie model, are used. And, a engine mount bracket of passenger car and three road load histories measured in proving ground are used for validation of this study. Also, static finite element analysis using MSC/NASTRAN for Windows is carried out to investigate the location of highest stress fields and to get data on stresses and strains in that loaction. Uniaxial equivalent strain histories for each theories are obtained by means of computer program coded by using the C language, which is based on the life prediction equations of proposed theries and finite element analysis data. Finally, these obtained uniaxial equivalent histories are used in fatigue life prediction software FatiCis Ver.1.0 based on uniaxial strain history, which has been developed by preceding researchers of Strength Design and Database Laboratory, to estimate fatigue crack initiation life under multiaxial loading. The estimated life results are evaluated and compared with each other. And the results are also compared with the result by using the P/FATIGUE commercial software. The predicted fatigue life results of maximum shear strain theory(Tresca theory), Sines model and Socie model are most conservative and are consistent well with P/FATIGUE result considerably. It is thought that this exemplary procedure is quite useful in the stage of preliminary fatigue design and evaluation for vehicle components.

서지기타정보

서지기타정보
청구기호 {MADE 97021
형태사항 vi, 73 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Hyung Choi
지도교수의 한글표기 : 송지호
지도교수의 영문표기 : Ji-Ho Song
학위논문 학위논문(석사) - 한국과학기술원 : 자동화및설계공학과,
서지주기 참고문헌 : p. 39-41
주제 피로균열
다축하중
유한요소법
하중이력
수명예측
Fatigue crack
Multiaxial loading
FEM
Load history
Life prediction
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