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- 검색키워드
- 저자 : Cheng Kuei-Jen (검색결과 4 건)
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Piecewise exact solution for analysis of base-isolated structures under earthquakes
C. S. Tsai,Tsu-Cheng Chiang,Bo-Jen Chen,Kuei-Chi Chen 국제구조공학회 2005 Structural Engineering and Mechanics, An Int'l Jou Vol.19 No.4
Base isolation technologies have been proven to be very efficient in protecting structures from seismic hazards during experimental and theoretical studies. In recent years, there have been more and more engineering applications using base isolators to upgrade the seismic resistibility of structures. Optimum design of the base isolator can lessen the undesirable seismic hazard with the most efficiency. Hence, tracing the nonlinear behavior of the base isolator with good accuracy is important in the engineering profession. In order to predict the nonlinear behavior of base isolated structures precisely, hundreds even thousands of degrees-of-freedom and iterative algorithm are required for nonlinear time history analysis. In view of this, a simple and feasible exact formulation without any iteration has been proposed in this study to calculate the seismic responses of structures with base isolators. Comparison between the experimental results from shaking table tests conducted at National Center for Research on Earthquake Engineering in Taiwan and the analytical results show that the proposed method can accurately simulate the seismic behavior of base isolated structures with elastomeric bearings. Furthermore, it is also shown that the proposed method can predict the nonlinear behavior of the VCFPS isolated structure with accuracy as compared to that from the nonlinear finite element program. Therefore, the proposed concept can be used as a simple and practical tool for engineering professions for designing the elastomeric bearing as well as sliding bearing.
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Ta-Hsin Chou,Kuei-Yuan Cheng,Chih-Chieh Su,Tien-Li Chang,Chih-Wei Hsieh,Jen-Hui Tsai 한국정밀공학회 2010 International Journal of Precision Engineering and Vol.11 No.4
The transparent conducting oxide (TCO) film is a significant component in flat panel display industry, applied for flexible display, e-paper, and touch panel. The TCO materials have high refractive index, so the phenomenon of high reflectance is the major issue and needs solved in present and future market. In this study, the structure and process of new lower reflection TCO hybrid film is introduced. The laser interference lithography and UV nanoimprint are combined for fabrication of sub-wavelength structures on PET film, then the tin-doped indium oxide (ITO) deposited on structures. Finally, the best result of this hybrid film is reflectance reduced to 3.3% at wavelength 550nm, just 13% of the original film, and the resistance of ITO layer is 1.05x10-3 Ω-cm. This result is useful for the TCO film applied in low reflection demand products in the future.
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The structural and non–linear dynamic analysis for radioactive waste container
Shen Yu-Yu,Cheng Kuei-Jen,Chou Hsoung-Wei 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.8
In recent years, the development of radioactive waste containers for nuclear facility decommissioning and dismantling is a critical issue because the Taiwan domestic boiling water reactor nuclear power plant is going to be decommissioned. The main purpose of this research is to design a metal container that meets the structural requirements of related regulations. At first, the shielding analysis was performed by varying dimensions of radioactive waste to determine the storage efficiency of the container. Then, a series of structural analyses for operational and accidental conditions of the container with full load were conducted, such as lifting, stacking, and drop impact conditions. On the other hand, the field drop impact tests were carried out to ensure structural integrity. The present research demonstrates the structural safety of the developed container for decommissioned nuclear facilities in Taiwan.
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Piecewise exact solution for analysis of base-isolated structures under earthquakes
Tsai, C.S.,Chiang, Tsu-Cheng,Chen, Bo-Jen,Chen, Kuei-Chi Techno-Press 2005 Structural Engineering and Mechanics, An Int'l Jou Vol.19 No.4
Base isolation technologies have been proven to be very efficient in protecting structures from seismic hazards during experimental and theoretical studies. In recent years, there have been more and more engineering applications using base isolators to upgrade the seismic resistibility of structures. Optimum design of the base isolator can lessen the undesirable seismic hazard with the most efficiency. Hence, tracing the nonlinear behavior of the base isolator with good accuracy is important in the engineering profession. In order to predict the nonlinear behavior of base isolated structures precisely, hundreds even thousands of degrees-of-freedom and iterative algorithm are required for nonlinear time history analysis. In view of this, a simple and feasible exact formulation without any iteration has been proposed in this study to calculate the seismic responses of structures with base isolators. Comparison between the experimental results from shaking table tests conducted at National Center for Research on Earthquake Engineering in Taiwan and the analytical results show that the proposed method can accurately simulate the seismic behavior of base isolated structures with elastomeric bearings. Furthermore, it is also shown that the proposed method can predict the nonlinear behavior of the VCFPS isolated structure with accuracy as compared to that from the nonlinear finite element program. Therefore, the proposed concept can be used as a simple and practical tool for engineering professions for designing the elastomeric bearing as well as sliding bearing.
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