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RISS 인기검색어
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- 저자 : 양성필(Seongpil Yang) (검색결과 24 건)
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발사체 외부하중을 고려한 발사체 지상 고정장치 해체 특성 분석
양성필(Seongpil Yang),김범석(Bumsuk Kim),김대래(Daerae Kim) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
It is desirable to verify the characteristics of launch vehicle (LV) motion connected with vehicle holding device (VHD) based on a basic design of equipment. However it is almost impossible to implement the same device configuration as real LV model to consider various external loads including wind load at the factory test level. In this study, we performed the multi-body dynamic (MBD) simulation of four VHD with LV model using commercial software to overcome difficulties to set up the real LV model at the test bench. We can obtain the motion and reaction force of VHD and LV from MBD simulation. As a result, the motion characteristics including the gap between LV and VHD in the flight condition of LV are verified under external loads on the LV such as wind load.
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형상기억합금 트러스 구조물을 이용한 스텐트의 설계 및 해석
양성필(Seongpil Yang),김상헌(Sanghaun Kim),조맹효(Manghyo Cho) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
Recently, many patients related to heart disease have surgical operation by expanding a blood vessel to treat the angiostenosis. So far most angioplasties have been performed using balloon-dilative stent made of stainless steel. Some researchers are studying the stent made of shape memory alloy (SMA) to operate the angioplasty more easily. and there are several papers which introduce the angioplasty using SMA. However, most of the analysis models for stents are constructed using solid elements. So much computing time is required to solve the analysis model. In this study, we suggest the SMA stent model using 1D truss element which is much faster than stent model using 3D solid element. To represent non-linear behavior of SMA, we apply 1D SMA constitutive equation of Lagoudas’. Pseudo-elastic behavior of stent structures is presented as a numerical example.
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김부영 ( Boo Young Kim ),양성필 ( Seongpil Yang ),김상호 ( Sang Ho Kim ),조한병 ( Han Byung Cho ),손기영 ( Kiyoung Son ) 한국건축시공학회 2015 한국건축시공학회 학술발표대회 논문집 Vol.15 No.1
Currently, according to the climate change, the damages due to the hurricane is more increased than before. In this respect, several countries have been conducted the studies regarding the damage prediction model of buildings to minimize the damages from natural disaster. As hurricane is the complex disaster including a strong wind and heavy rain, to predict the damage of hurricane, various factors has to be considered. However, mostly research has been conducted to consider only hurricane properties. Therefore, the objective of this study is to develop the regression model for predicting damages of buildings considering geography, socio-economy, construction environment and hurricane information. In the future, this study can be utilized to developing damage prediction model for building from hurricane in South Korea.
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상관분석을 통한 태풍에 따른 건축물 피해액의 영향인자 도출
김부영 ( Boo Young Kim ),양성필 ( Seongpil Yang ),김상호 ( Sangho Kim ),손기영 ( Kiyoung Son ) 한국건축시공학회 2014 한국건축시공학회 학술발표대회 논문집 Vol.14 No.1
In the case of U.S, various damage prediction models of buildings from natural disasters have been used widely in many organizations such as insurance companies and governments. In South Korea, although studies regarding damage prediction model of hurricane have been conducted, the scope has been only limited to consider the property of hurricane. However, it is necessary to consider various factors such as socio-economic, physical, geographical, and built environmental factors to predict the damages. Therefore, as a basic study on a damage prediction model development of buildings, this study is to analyze the correlation between various factors related to hurricane. The findings of study can be utilized to develop for predicting the damage of hurricane on buildings.
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