http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design and implementation of AMD system for response control in tall buildings
J. Teng,H.B. Xing,Y.Q. Xiao,C.Y. Liu,H. Li,J.P. Ou 국제구조공학회 2014 Smart Structures and Systems, An International Jou Vol.13 No.2
This paper mainly introduces recently developed technologies pertaining to the design and implementation of Active Mass Damper (AMD) control system on a high-rise building subjected to wind load. Discussions include introduction of real structure and the control system, the establishment of analytical model, the design and optimization of a variety of controllers, the design of time-varying variable gain feedback control strategy for limiting auxiliary mass stroke, and the design and optimization of AMD control devices. The results presented in this paper demonstrate that the proposed AMD control systems can resolve the issues pertaining to insufficient floor stiffness of the building. The control system operates well and has a good sensitivity.
Design and implementation of AMD system for response control in tall buildings
Teng, J.,Xing, H.B.,Xiao, Y.Q.,Liu, C.Y.,Li, H.,Ou, J.P. Techno-Press 2014 Smart Structures and Systems, An International Jou Vol.13 No.2
This paper mainly introduces recently developed technologies pertaining to the design and implementation of Active Mass Damper (AMD) control system on a high-rise building subjected to wind load. Discussions include introduction of real structure and the control system, the establishment of analytical model, the design and optimization of a variety of controllers, the design of time-varying variable gain feedback control strategy for limiting auxiliary mass stroke, and the design and optimization of AMD control devices. The results presented in this paper demonstrate that the proposed AMD control systems can resolve the issues pertaining to insufficient floor stiffness of the building. The control system operates well and has a good sensitivity.
A study of the impact properties of adhesively-bonded aluminum alloy based on impact velocity
Teng Gao,Anthony J. Kinloch,Bamber R. K. Blackman,F. S. RODRIGUEZ SANCHEZ,이상교,조종두,방혜진,전성식,조재웅 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.2
In this study, an experiment and a simulation were carried out on colliding an adhesively-bonded tapered double cantilever beam(TDCB) at the impact velocities of 5 m/s, 7.5 m/s and 12.5 m/s. The analysis method of the corrected beam theory (CBT) was used toobtain the rate of energy release in the bonded area according to the crack progression, and a simulation was performed to determine themaximum strain energy during the impact analysis as a means to examine the mechanical properties of aluminium alloy. The experimentaldata were found to be higher than the simulation data. This is deemed to explicable by the fact that the adhesive strength was maintainedeven after the specimen separated in the experiment. Crack progression occurred, irrespective of the impact velocity, and highstrain energy occurred at the end of the bonded region, thereby causing the strain energy to increase in the final stages. Also, the maximumload applied on the pin and the maximum strain energy in the bonded area were shown increase at higher impact velocities. Theresults of the experiment and simulation performed in this study are expected to serve as important data in developing a safety design forcomposite materials that can help prevent the progression of cracks caused by impact.
알루미늄 합금으로 된 경사진 이중외팔보의 충돌에 대한 실험 및 해석
고등 ( Teng Gao ),조재웅 ( J U Cho ),전성식 ( Seong S Cheon ) 한국복합재료학회 2014 Composites research Vol.27 No.2
본 연구에서는 알루미늄 합금으로 된 경사진 이중외팔보의 충돌에 대해서 각각의 충격속도 2.5m/s, 7.5m/s, 12.5 m/s 별로 실험과 시뮬레이션 해석을 하였다. 접착부분에 발생하는 에너지 해방율과 응력을 평가하여 알루미늄 합금의 기계적 특성을 고찰하였다. 실험상에서는 접착 부분에서 에너지 해방율의 값이 높은 것으로 나타났다. 이는 실험에서 시험편이 분리된 후에도 접착력이 유지되는 특성 때문인 것으로 사료된다. 충격속도와 상관없이 균열이 진전하다가 접착된 부분의 끝에서 높은 응력을 발생하기 때문에 최대 등가응력은 마지막 단계에서는 올라간다. 본 연구에서의 실험 및 해석결과들은 충돌에 의한 균열 진전을 방지할 수 있는 복합재료에 대한 안전설계의 개발에 필요한 자료로 사료된다. This study is investigated by experiments and analyses at rates of 2.5m/s, 7.5m/s and 12.5m/s on the impact of tapered double cantilever beam specimens with aluminium alloy. It aims to examine the mechanical property of aluminum alloy by evaluating energy release rate and equivalent stress happened at the bonded part of specimen. Because bonding force remains after the separation of specimen, the energy release rate at the bonded part becomes highest. As crack propagates and the high stress happens at the end of the bonded part, the maximum equivalent stress becomes higher at the last stage, regardless of impact rate. These results of experiments and analyses are the data necessary to develop the safe design of composite material to prevent crack propagation due to impact.
Y. J. Li,Y. F. Teng,Y. S. Yang 대한금속·재료학회 2014 METALS AND MATERIALS International Vol.20 No.3
The grain refinement of a silicon steel solidified with a low voltage pulsed magnetic field (LVPMF)was investigated by experiments and modeling. The experiment results show that complete fine equiaxedgrains are acquired by applying the LVPMF. The effects of process parameters, such as the melt coolingrate and superheating on the solidification structure, were also studied. Complete fine equiaxed grains canbe obtained under a larger range of cooling rate or superheating when the LVPMF is applied. The magneticforce and the melt flow during solidification were modeled and simulated to reveal the grain refinementmechanism. The simulation results show that the LVPMF has a double role in electromagnetic convection andelectromagnetic vibration on the alloy melt. We propose the refining mechanism: The melt vibration and convectioncan promote nucleus multiplication, which contributes to heterogeneous nucleation enhancement and leadsto a high nucleation rate and grain refinement.
김경지,Curtis J. Bonk,Ya-Ting Teng 서울대학교 교육연구소 2009 Asia Pacific Education Review Vol.10 No.3
This article reports survey findings related to the current status and future trends of blended learning in workplace learning settings from diverse cultures. This particular survey was conducted of 674 training and human resource development professionals from five different countries, mostly from the Asia-Pacific region (i.e., China, South Korea, Taiwan, United States, and the United Kingdom). The results show that blended learning will become a popular delivery method in the future of workplace learning not only in Western countries but also in Asian countries. Still, the respondents indicated that there were several barriers to blended learning; one of the most noticeable issues was their lack of understanding of blended learning. There is a pressing need, therefore, to provide practitioners with guidance on how to implement blended learning in their organizations. Additionally, among the countries surveyed, the results of the present study revealed that there were significant differences in the current level of adoption of blended learning, the respondents' attitudes toward and perceptions of blended learning, and the content areas taught by blended learning. Respondents' predictions related to emerging instructional strategies, technologies, and evaluation techniques for blended learning are also reported.