근골격 해부학에 근거한 텐던 매커니즘 기반 다자유도 로봇 핸드(SSP Mk.1, SSP Mk.2)의 기구학적 설계 및 분석

최성모,이세진 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6

This paper Introduces the robot hand inspired by human skeletal muscle. The model name for the pre-researched robot hand and currently researched robot hand (SSP Mk.2) defined in this paper. Sentences on NIV holy bible (from Matthew 5:13 to 5:16) cited to name the suggested project. F​irst, The limits and summary of the pre-researched robot hand (SSP Mk.1) were written in this paper. Three problems (1. The weight of the forearm is too heavy, 2. The pre-researched model (SSP Mk.1) was failed to show the movement of the actual human hand completely, 3. The pre-researched robot hand (SSP Mk.1) didn't satisfy the range of motion of the human hand) were found in the pre-researched model (SSP Mk.1). Updated information for the advanced model (SSP Mk.2) wrote in this paper. And The advanced model (SSP Mk.2) and The pre-researched robot hand (SSP Mk.1) was compared to show the improvement of SSP Mk.2

Experimental Study on Seismic Performance Improvement of Concrete-filed Tubular Square Column-to-Beam Connections with Combined Cross-diaphragm

최성모,김진호,Dae-Joong Kim,이성희 한국강구조학회 2005 International Journal of Steel Structures Vol.5 No.5

Concrete-filed tubular (CFT) structures have been generaly aplied to high-rise buildings in Japan in recent years, resultingin rising demand for higher compressive strength of the concrete used for such structures. The authors have developed a specialbinder (cement) for high-strength concrete that is suitable for the construction of high-rise and high-strength CFT structuresalready ben applied to some high-rise CFT buildings. This paper describes two cases in which high-strength concrete with acompressive strength of about 100 MPa was applied to high-rise CFT-structured buildings.

연직 스티프너 보강형 각형강관 기둥-보 접합부의 구조적 거동

최성모,정진안 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.4

This paper describes a study on a new connection method for use in steel moment-resisting frames. The connections are strengthened by vertical stiffeners to connect Square tube column and H-shaped beam. The two loading type tests were conducted under the experimental parameters given as details. First are described sy㎜etrical loading test that supported the both ends or a beam simply and applied load from the column top end for investigating a fundamental characteristics of this connection. Further are given the anti-sy㎜etrical loading test that carries out simple support of the column top end and the column base, and applied load from the both ends of a beam for investigating structural performance of this connection. To verify results from tests, a nonlinear analysis for moment-resisting frames composed of square tube column and H shaped beam was performed using a FE analysis program, ANSYS. It was found that all specimens were able to exceed the capacity predicted by the full plastic strength of beam. The connections strengthened with vertical stiffeners were successfully verified by the tests.

일본 환경정책의 역동성과 정치적·경제적 맥락

최성모 高麗大學校 行政問題硏究所 1992 行政과 政策 Vol.- No.1

Stress-transfer in concrete encased and filled tube square columns employed in top-down construction

최성모,김선희,염경수 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.22 No.1

Top-down construction is a construction technique in which pit excavation and structure construction are conducted simultaneously. Reducing construction time and minimizing noise and vibration which affect neighboring structures, the technique is widely employed in constructing downtown structures. While H-steel columns have been commonly used as core columns, concrete filled steel tube (CFT) columns are at the center of attention because the latter have less axial directionality and greater cross-sectional efficiency than the former. When compared with circular CFT columns, square CFT columns are more easily connected to the floor structure and the area of percussion rotary drilling (PRD) is smaller. For this reason, square CFT columns are used as core columns of concrete encased and filled square (CET) columns in underground floors. However, studies on the structural behavior and concrete stress transfer of CET columns have not been conducted. Since concrete is cast according to construction sequence, checking the stress of concrete inside the core columns and the stress of covering concrete is essential. This paper presents the results of structural tests and analyses conducted to evaluate the usability and safety of CET columns in top-down construction where CFT columns are used as core columns. Parameters in the tests are loading condition, concrete strength and covering depth. The compressive load capacity and failure behavior of specimens are evaluated. In addition, 2 cases of field application of CET columns in underground floors are analyzed.

β- 락탐계 항생물질 구조를 갖고 있는 폴리아크릴산 유도체의 합성 및 항균성에 관한 연구

최성모,진정일 한국고분자학회 1985 한국고분자학회 학술대회 연구논문 초록집 Vol.1985 No.10

고장력볼트의 시공 및 품질관리

최성모 한국강구조학회 2023 韓國鋼構造學會誌 Vol.35 No.6

CFT 각형 기둥-보 합성 반강접 접합부의 단조가력 실험

최성모,박수희,박영욱,김진호,Choi, Sung Mo,Park, Su Hee,Park, Young Wook,Kim, Jin Ho 한국강구조학회 2005 韓國鋼構造學會 論文集 Vol.17 No.3

본 연구의 목적은 CFT각형기둥과의 접합에 성능이 개선된 합성 반강접 접합디테일을 제안하고 기둥-보 접합부의 단조가력시 역학적 거동을 보기 위함이다. 극한 거동에 결정적 영향을 끼치는 하부 접합부의 전단내력을 보강하고 시공성을 고려하여 합성 반강접 접합을 CFT구조 형식에 시도하여 CFT기둥-보 접합부의 접합디테일을 제안하였다. 본 연구에서 제안하는 하부 보 플랜지 용접접합(M-2)을 기존 합성 반강접 접합상세인 시트앵글접합(M-1)과 비교/검토하였다. 두 개의 실대형 CFT기둥-보 합성 반강접 접합부 실험체에 대한 단조가력실험을 수행하였다. 실험 결과, 제안형인 하부 보플랜지 용접접합된 실험체는 강접합된 철골보의 약 85%의 강성을 확보하였다. 이는 기존형 실험체와 거의 동일하였으며, 반강접으로 분류됨을 확인할 수 있었다. 제안형 실험체가 웨브 접합부에서 볼트지압에 의한 전단파괴가 발생하였으나 파단 직전까지는 슬래브 연성파괴가 일어난 기존형 실험체와 유사한 거동을 보였다. 슬래브 보강근에 의해 충분한 강성 및 내력이 확보되며, 웨브부분의 강관내의 앵커보강에 의해 전소성모멘트에 상응하는 내력 및 변형성능이 확보되어 충분한 연성거동을 보이는 것으로 판단된다. This study tackles the development of an improved detail of partially restrained CFT square column-to-beam connection and the evaluation of its mechanical behavior under monotonic loading. The connection is designed to strengthen shearing capacity at the bottom of the connection due to the ultimate behavior of PR-CC by its detail of the bottom connection and simplify the fabrication process. The suggested connection is the welded bottom beam flange connection(M-2) and is compared with the existing PR-CC of bolted seat angle connection(M-1). Two specimens were fabricated in actual size and tested under monotonic loading. Based on the test results, the welded bottom beam flange connection exhibited about 85% of the stiffness of steel beam. It was similar to the bolted seat angle connection and behaved as PR-CC. The specimen of the supposed connection type failed at the shear connection of web but was similar to the bolted seat angle connection until the failure. It obtained sufficient stiffness and capacity through the reinforcingsteel and the capacity and deformational ability equivalent to the full-plastic moment through the anchor inside the steel tube at the web connection. So, it can be said that the suggested connection exhibits sufficient ductile behavior.

저축력과 반복수평력을 받는 콘크리트충전 강관기둥의 이력특성

최성모,강석빈,김대중,Choi, Sung Mo,Kang, Suk Bin,Kim, Dae Joong 한국강구조학회 2003 韓國鋼構造學會 論文集 Vol.15 No.2

콘크리트충전 강관구조는 합성효과에 의해 강관과 콘크리트의 단점을 상호보완하여 역학적으로 우수한 성능을 발휘할 수 있다. 그래서, 최근에는 고층건물에 구조시스템의 대안으로서 주목을 받고 있다. 본 연구의 목적은 일정축력과 반복 수평력을 받는 콘크리트충전 강관기둥의 내력 및 변형성능을 평가하는 것이다. 이 실험의 변수로는 강관의 폭두께비, 축력비 및 강관의 형상으로 정하여 총 18개의 실험체를 제작하여 실험하였다. 실험결과로부터 실험체의 최대내력 및 변형성능에 대해 검토하였다. The Concrete Filled Steel Tube (M) Column has excellent structural capacities that are in accordance with the interaction effect between the steel tube and concrete. CFT structure has been focussed on a struc tural system for high-rise buildings. The purpose of this study is to evaluate the strength and deformation capacities of CFT columns that are subject to constant axial and cyclic lateral load. The test parameters are diameters to the thickness ratio of the steel tube, axial load ratios, and the shapes of the tube. Total eighteen specimens were fabricated to clarify the energy absorption capacity of the CFT columns. Experimental results were summarized for their ultimate strengths and deformation capacities.

섬유보강플라스틱(FRP) 스트립으로 보강한 철골보의 휨거동에 관한 실험적연구

최성모,박재우,Choi, Sung Mo,Park, Jai Woo 한국강구조학회 2014 韓國鋼構造學會 論文集 Vol.26 No.2

본 연구에서는 콘크리트 섬유보강플라스틱(FRP)로 보강된 철골보의 정적 휨하중상태에서 휨거동에 관한 실험결과를 제시하였다. 아라미드섬유 스트립과 탄소섬유 스트립으로 보강된 4개의 실험체를 제작하였으며, 1개의 기준실험체를 제작하였다. 이중 두 실험체는 부분보강방식으로 보강되었다. H빔은 두 종류의 파괴모드를 가지고 있는데, (1) 부분보강 실험체에서는 FRP 스트립이 탈락(debonding)되는 파괴모드를 보이고 있으며, 전면보강 실험체에서는 FRP 스트립이 파단(rupture)되는 거동을 보이고 있다. 실험결과 16%의 휨내력 상승효과를 관찰하였다. This paper presents the experimental results of flexural behavior of steel beam strengthened with fiber reinforced polymer plastic (FRP) strips subjected to static bending loading. Four H beams were fabricated strengthened with aramid strips and carbon strips and one control specimen were also fabricated. Among them two specimens were strengthened with partial length. The H-beams had two types of failure mode, depending on the length of the FRP strips:(1) strip debonding in beams with partial length reinforcement and (2) strip rupture in beams with full length reinforcement. From the test, it was observed that maximum increase of 16% was also achieved in bending-load capacity.