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 : Deneme (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
A comparison of the effect of SSI on base isolation systems and fixed-base structures for soft soil
Karabork, T.,Deneme, I.O.,Bilgehan, R.P. Techno-Press 2014 Geomechanics & engineering Vol.7 No.1
This study investigated the effect of soil-structure interaction (SSI) on the response of base-isolated buildings. Seismic isolation can significantly reduce the induced seismic loads on a relatively stiff building by introducing flexibility at its base and avoiding resonance with the predominant frequencies of common earthquakes. To provide a better understanding of the movement behavior of multi-story structures during earthquakes, this study analyzed the dynamic behavior of multi-story structures with high damping rubber bearing (HDRB) behavior base isolation systems that were built on soft soil. Various models were developed, both with and without consideration of SSI. Both the superstructure and soil were modeled linearly, but HDRB was modeled non-linearly. The behavior of the specified models under dynamic loads was analyzed using SAP2000 computer software. Erzincan, Marmara and Duzce Earthquakes were chosen as the ground motions. Following the analysis, the displacements, base shear forces, top story accelerations, base level accelerations, periods and maximum internal forces were compared in isolated and fixed-base structures with and without SSI. The results indicate that soil-structure interaction is an important factor (in terms of earthquakes) to consider in the selection of an appropriate isolator for base-isolated structures on soft soils.
-
Ozdemir, Resul,Park, Sangyun,Deneme, İ,brahim,Park, Yonghan,Zorlu, Yunus,Alidagi, Husniye Ardic,Harmandar, Kevser,Kim, Choongik,Usta, Hakan The Royal Society of Chemistry 2018 Organic chemistry frontiers Vol.5 No.20
<P>The design and synthesis of novel electron-deficient and solution-processable polycyclic aromatic hydrocarbons offers great opportunities for the development of low-cost and large-area (opto)electronics. Although (trialkylsilyl)ethynyl (R3Si-CC-) has emerged as a very popular unit to solubilize organic semiconductors, it has been applied only to a limited class of materials that are mostly substituted on short molecular axes. Herein, two novel solution-processable indenofluorene-based semiconductors, TIPS-IFDK and TIPS-IFDM, bearing (triisopropylsilyl)ethynyl end units at 2,8-positions (<I>long molecular axis substitution</I>) were synthesized, and their single-crystal structures, optoelectronic properties, solution-sheared thin-film morphologies/microstructures, and n-channel field-effect responses were studied. In accordance with the DFT calculations, the HOMO/LUMO energies of the new compounds are found to be −5.77/−3.65 eV and −5.84/−4.18 eV for TIPS-IFDK and TIPS-IFDM, respectively, reflecting the high electron deficiency of the new π-backbones. Both semiconductors exhibit slightly S-shaped molecular frameworks with highly coplanar IFDK/IFDM π-cores, and they form slipped π-stacked one-dimensional (1-D) columnar motifs in the solid state. However, substantial differences in the degree of π-π interactions and stacking distances (4.04 Å <I>vs.</I> 3.47 Å) were observed between TIPS-IFDK and TIPS-IFDM as a result of carbonyl <I>vs.</I> dicyanovinylene functionalization, which results in a three orders of magnitude variation in the charge carrier mobility of the corresponding thin films. Top-contact/bottom-gate OFETs fabricated <I>via</I> solution-shearing TIPS-IFDM yielded one of the best performances in the (trialkylsilyl)ethynyl literature (<I>μ</I>e = 0.02 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP>, <I>I</I>on/<I>I</I>off = 10<SUP>7</SUP>-10<SUP>8</SUP>, and <I>V</I>T ∼ 2 V under ambient atmosphere) for a 1-D polycrystalline semiconductor microstructure. To the best of our knowledge, the molecules presented here are the first examples of n-type semiconductors substituted with (trialkylsilyl)ethynyl groups on their long molecular axes.</P>
-
The use of discontinuous first and second-order mixed boundary elements for 2D elastostatics
M.H. Severcan,A.K. Tanrikulu,A.H. Tanrikulu,I.O. Deneme 국제구조공학회 2010 Structural Engineering and Mechanics, An Int'l Jou Vol.34 No.6
In classical higher-order discontinuous boundary element formulation for two-dimensional elastostatics, interpolation functions for different boundary variables (i.e., boundary displacements and tractions) are assumed to be the same. However, there is a derivational relationship between these variables. This paper presents a boundary element formulation, called Mixed Boundary Element Formulation, for two dimensional elastostatic problems in which above mentioned relationship is taking into account. The formulations are performed by using discontinuous first and second-order mixed boundary elements. Based on the formulations presented in this study, two computer softwares are developed and verified through some example problems. The results show that the present formulation is credible.
-
Mehmet A. Komur,Mehmet E. Kara,Ibrahim O. Deneme 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.74 No.1
This paper presents an experimental study on the dynamic characteristics of infilled reinforced concrete (RC) frames. A 1/3-scaled, one-bay, three-storey RC frame was produced and tested by using operational modal analysis (OMA). The experiments were performed on five specimens: one reference frame with no infill walls and four frames with infill walls. The RC frame systems included infill walls made of hollow clay brick, which were constructed in four different patterns. The dynamic characteristics of the patterns, including the frequency, mode shapes and damping ratios in the in-plane direction, were obtained by 6 accelerometers. Twenty-minute records under ambient vibration were collected for each model, and the dynamic characteristics were determined using the ambient vibration testing and modal identification software (ARTeMIS). The experimental studies showed that the infill walls significantly affected the frequency value, rigidity and damping ratio of the RC frame system.
-
The use of discontinuous first and second-order mixed boundary elements for 2D elastostatics
Severcan, M.H.,Tanrikulu, A.K.,Tanrikulu, A.H.,Deneme, I.O. Techno-Press 2010 Structural Engineering and Mechanics, An Int'l Jou Vol.34 No.6
In classical higher-order discontinuous boundary element formulation for two-dimensional elastostatics, interpolation functions for different boundary variables (i.e., boundary displacements and tractions) are assumed to be the same. However, there is a derivational relationship between these variables. This paper presents a boundary element formulation, called Mixed Boundary Element Formulation, for two dimensional elastostatic problems in which above mentioned relationship is taking into account. The formulations are performed by using discontinuous first and second-order mixed boundary elements. Based on the formulations presented in this study, two computer softwares are developed and verified through some example problems. The results show that the present formulation is credible.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
