http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
건축물 적용을 위한 제형 절곡 웨브 보의 전단성능에 관한 해석적 연구
이서행,박근우,유정한 한국강구조학회 2018 韓國鋼構造學會 論文集 Vol.30 No.1
This study conducted nonlinear finite element analysis to figure out the influence of shear performance on the of girders with trapezoidal corrugated web. Through the experiment specimen, analysis model which is highly accurate was verified. Based on this, a parameter analysis was conducted on key variables affecting. Proposed formulas of previous studies were analyzed using parameter analysis result. Eurocode was designed to be safer than other proposals. Only models that are included in the inelastic area, depending on the Moon’s proposal, were satisfied the proposed formulas by Kim to enhance economic design. 본 연구는 비선형 유한 요소 해석을 통해 제형의 절곡형상 웨브를 갖는 보의 수평패널 길이와 경사패널의 비 β에 따른 전단 거동을파악하였다. 선행 실험연구 결과를 통해 정확도 높은 해석모델을 검증하였으며, 이를 토대로 β 및 전단거동에 영향을 미치는 핵심 변수에 대한변수해석을 실시하였다. 또한 변수해석 결과를 통해 선행연구의 제안식을 평가하였다. 분석결과 Eurocode는 다른 제안식보다 보수적으로평가하고 있으며, 김영숙의 제안식은 Moon의 제안식에 따라 비탄성 영역에 포함 된 모델만이 경제적인 평가를 하는 것으로 판단된다
Do-Soon Kim(김도순),Tae Young Kim(김태영),Jong Nam Lee(이종남),Ki Hwan Hwang(황기환),Yong Sang Lee(이용상) 한국농약과학회 2006 농약과학회지 Vol.10 No.1
This study was conducted to optimize formulation factors of a self-dispersible floating granule of flucetosulfuron t㏊t can be used at a low application volume (5 ㎏ ㏊?¹). SPA and xant㏊n gum were selected as a binder because blending of them showed good granulation and floatation. Potassium chloride selected as a filler also showed good granulation, floatation and disintegration properties. Among wetters and dispersants, Surfynol 440 gave the best dispersibility. The optimum granule size was determined to be 1.0 ㎜ considering floating time and dispersibility. Flucetosulfuron was mixed with the blend of SPA and xant㏊n gum, potassium chloride, and Surfynol 440 and formulated as a floating self-dispersible granule at 1.0 ㎜ in diameter. Indoor and outdoor field experiments showed t㏊t the floating granule of flucetosulfuron performed well, covering long range from the application spot up to 15 m in weed control. Therefore, this floating technology may be used for laborsaving herbicide formulation development and help to reduce workloads for herbicide application.