http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : S.M. Seyedpoor (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
A new damage detection indicator for beams based on mode shape data
Yazdanpanah, O.,Seyedpoor, S.M.,Bengar, H. Akbarzadeh Techno-Press 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.53 No.4
In this paper, a new damage indicator based on mode shape data is introduced to identify damage in beam structures. In order to construct the indicator proposed, the mode shape, mode shape slope and mode shape curvature of a beam before and after damage are utilized. Mode shape data of the beam are first obtained here using a finite element modeling and then the slope and curvature of mode shape are evaluated via the central finite difference method. In order to assess the robustness of the proposed indicator, two test examples including a simply supported beam and a two-span beam are considered. Numerical results demonstrate that using the proposed indicator, the location of single and multiple damage cases having different characteristics can be accurately determined. Moreover, the indicator shows a better performance when compared with a well-known indicator found in the literature.
-
A new damage detection indicator for beams based on mode shape data
O. Yazdanpanah,S.M. Seyedpoor,H. Akbarzadeh Bengar 국제구조공학회 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.53 No.4
In this paper, a new damage indicator based on mode shape data is introduced to identify damage in beam structures. In order to construct the indicator proposed, the mode shape, mode shape slope and mode shape curvature of a beam before and after damage are utilized. Mode shape data of the beam are first obtained here using a finite element modeling and then the slope and curvature of mode shape are evaluated via the central finite difference method. In order to assess the robustness of the proposed indicator, two test examples including a simply supported beam and a two-span beam are considered. Numerical results demonstrate that using the proposed indicator, the location of single and multiple damage cases having different characteristics can be accurately determined. Moreover, the indicator shows a better performance when compared with a well-known indicator found in the literature.
-
R. Yahyapour,S.M. Seyedpoor 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.4
The main aim of this study is to assess the seismic behavior of various knee braced steel frames using nonlinear static and dynamic analyses. For this, structures with four diff erent types of knee braces at heights of 5, 10, 15 and 20 stories are designed through ETABS and then are three-dimensionally modeled via PERFORM 3D. Firstly, various seismic parameters including response modifi cation factor, ductility factor, defl ection amplifi cation factor and overstrength factor of the structures are compared via implementing the pushover analysis. Secondly, target models are subjected to fi ve far-fault and fi ve nearfault records. Fragility curves as well as curves obtained from the incremental dynamic analysis (IDA) are then compared, so as to determine the best type of bracing in terms of seismic performance. Benefi ting results of non-linear static analyses, top knee, x-knee, chevron knee and double knee braced frames have the best seismic performance, respectively. Likewise, using IDA results in the far-fault area, x-knee, top knee, chevron knee and double-knee braced frames demonstrate the best performance, respectively. In addition, in near-fi eld area at the height of 5 stories, the best performance is correspondingly attributed to x-knee, top-knee, chevron knee and double knee braces, respectively. However, at heights of 10, 15 and 20 stories, chevron knee, double knee, top knee and x-knee braced frames show a better performance, respectively.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
