http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
긴장재 배치에 따른 PT슬래브공법의 효율성에 관한 연구
김강수(Kim Kang-Su),이득행(Lee Deuck-Hang),김상식(Kim Sang-Sik),김창혁(Kim Chang-Hyuk),박정우(Park Jung-Woo) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.9
The post-tension (PT) method is generally regarded as a good alternative to solve out the excessive deflection problem in reinforced concrete (RC) structures. Despite this good advantage, however, the application of PT method has been very limited in domestic market due to the unfavorable circumstances such as cost increase, technical problems, and lack of experiences in domestic construction. For the expansion of application of PT method in domestic market, therefore in this research, the influences of structural members and tendon directions on the effective prestress were analyzed, and the efficiency of deflection control by various tendon layout was evaluated. Also, the best layouts of tendons for a construction project was derived and the economic efficiency of PT method was evaluated considering the cost of marterials and construction. In this study, it is confirmed that PT method is very efficient for reducing both deflection and member size. The results of this study also indicated that the partial PT method with top anchorage can be very useful for deflection control, with reasonably small cost increase, in the part of span where large deflection is anticipated.
김강수(Kang Soo Kim),김영석(Young Suk Kim),정용무(Yong Moo Cheong) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Delayed Hydride Cracking (DHC) tests are conducted by using CT specimens of Zr-2.5Nb at 250 ℃. The test data is inputed for the FEM model. Two models is made according to the application of the hydride expansion. Hydride stresses and average stresses of the plastic zone of two FEM models are calculated and two results are compared. That results say that hydride fracture is due to the hydride expansion and say that hydride fracture is related to the relation between the increment of the hydride expansion stress and the increment of the average stress of the plastic zone on the hydride. Also, that results say that the hydride expansion is most important factor of DHC. Now, Stage Ⅰ and Stage Ⅱ of the unique DHC phenomenon can be explained through an analysis of the increment of the hydride expansion and the plastic constraint force in the plastic zone.
CDSS 실용화를 위한 ArdenML XSLT 개발 -VB.NET을 활용한-
김강수 ( Kang Soo Kim ),채영문 ( Yong Moon Chae ),김석일 ( Suk Il Kim ),이병화 ( Byung Hwa Lee ) 한국보건정보통계학회(구 한국보건통계학회) 2015 보건정보통계학회지 Vol.40 No.1
Objectives: The ArdenML is an HL7 standard language for an XML-based representing medical knowledge as logic statements. Problems related to execution of ArdenML are the curly braces problem and the compiler problem, which may be resolved by the introduction of XML-based techniques. This study was aimed at develop an ArdenML based XSLT conforming to HL7 standard. Methods: There were several structural differences in three approaches: Arden Syntax is category; ArdenML is tag; and Visual Basic is comment, function, events, class, and procedure. XSLT was developed by analyzing three approaches. Based on XSLT, ArdenML was translated into Visual Basic and the interface module was developed to allow communicating with legacy systems. Results: Most of the CDSS are independently developed and run, to require reentry of rules. But this system makes it easier to interface with the existing systems simply by translating or compiling rules. Two hundred sixty five of the 285 rules were showed the success after compiling, and 6 errors for the operater query, 14 warnings related to data type were resolved by data re-modeling. Conclusions: ArdenML has been converted into executable files using standard transforms written in the eXtensible Stylesheet Language Transformation (XSLT) in visual basic language. Development of Arden Syntax compiler requires not only a lot of time and efforts, but also reorganization of existing systems according to the MLM. It also has curly brace problem and problem of requiring additional compiler.
이종재료 Butt 용접에 대한 Overlay 용접의 잔류응력해석
김강수(Kang Soo Kim),이호진(Ho Jin Lee),이봉상(Bong Sang Lee),정인철(In Chul Jung),변진귀(Jin Gwi Byeon),박광수(Kwang Soo Park) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
In recent years, the dissimilar metal, Alloy 82/182 welds used to connect stainless steel piping and low alloy steel or carbon steel components in nuclear reactor piping system have experienced cracking due to primary water stress corrosion(PWSCC). It is well known that one reason of the cracking is the residual stress by the weld. But, it is difficult to estimate exactly weld residual stress due to many parameters of welding. In this paper, the analysis of 3 FEM models made by ABAQUS Code is performed to estimate exactly the weld residual stress on the dissimilar metal weld. 3 FEM models are Butt model, Repair model and Overlay model and are the plane?strain 2D model. The thermal analysis and the stress analysis are performed on each model and the residual stresses on each model were calculated and compared respectively. Also, the specimen of Butt model was made and the residual stresses were measured by X-Ray method and Hole Drilling Technique. These results were compared with the FEM result of Butt model.
Zr-2.5Nb 압력관 크랙선단에서 수소화물의 응력해석
김강수(Kang Soo Kim),김영석(Young Suk Kim),정용무(Yong Moo Cheong),안상복(Sang Bok Ahn),임경수(Kyoung Soo Im) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.3
Delayed Hydride Cracking (DHC) tests are conducted by using CT specimens of Zr-2.5Nb at 250℃. The test data is inputed for the FEM model. The stresses of the hydride and Zr-2.5Nb elements near the crack tip of the FEM model are examined. Also, the plastic zone size and average stresses near the crack tip are calculated for checking the effects of the plastic constraint. The material behavior of the elements near a crack tip, the hydride expansion stress, the hydride fracture strength and the size of the plastic zone according to each K are found. Also, Stage Ⅰ and Stage Ⅱ of the unique DHC phenomenon can be explained through an analysis of the plastic constraint force in the plastic zone.