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심상철(Sangchul Sim),강유석(Yousuk Kang),김학진(Hakjin Kim) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
Performance analysis and evaluation technique of weather strip components for automobiles was studied. Automotive weather strip is a very important component in determining the quality of emotion that reduce noise and the physical quality that blocks rainwater and pollutants. A rubber material, a foam material and the like are mixed and used in order to satisfy required performance such as door closing and permanent deformation. Rubber materials and foam materials have different nonlinear behaviors, which are different from metal materials. Therefore, there are many difficulties in convergence of analysis and there are many errors in mounting condition of vehicle. The material test was first performed to ensure the reliability of the analysis, and the analysis and evaluation were carried out through the mounting and testing of the product. Nonlinear finite element analysis was performed using commercial software ABAQUS, and various material models and analytical methods were selected and analyzed. As a result, it was analytically verified that the validity of the test results was over 80%. Through this, it is expected that reliable results can be used when designing the product.
방진고무 내구 해석의 정량적 평가를 위한 프로그램 개발
강유석(Yousuk Kang),심상철(Sangchul Sim),김학진(Hakjin Kim) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
The anti-vibration rubber of a vehicle is component that improves the performance of the vehicle by damping shocks or vibrations from the ground while improving the performance of the vehicle and enhancing the stability of the occupant. The durability life of such a vibration-proof rubber is measured by the single-use endurance test using the normal force and the horizontal force measured in the actual vehicle evaluation, and the life span of the vibration-proof rubber is measured. If this process is followed, the cost and time consuming to develop the anti-vibration rubber compared to the price of the anti-vibration rubber become very large due to the complicated process such as the single durability test, the improvement after the improvement, and the single durability test. Developed a program that can quantitatively evaluate the durability life of anti - vibration rubber through finite element analysis. The program was developed using the durability formula defined using the relationship between the tearing energy of rubber and dynamic crack growth. The predicted life expectancy using the developed program was compared with the endurance life value obtained from the actual test. As a result, it was confirmed that the reliability of the program was verified through comparison between the predicted value and the result of actual single item test using the anti-vibration rubber endurance prediction program. Using the developed program, it is expected to be useful for the design considering the durability life of the anti - vibration rubber.
행정중심복합도시 금빛노을교 및 5생활권 외곽순환도로 설계사례
은상준(Sangjoon Eun),김명우(Myoungwoo Kim),박창규(Changkyu Park),심상철(Sangchul Sim),김종학(Jonghak Kim),손창호(Changho Sohn) 대한토목학회 2018 대한토목학회지 Vol.66 No.8
본 사업은 행정중심복합도시를 경유하는 지역간 통과교통을 5생활권 외곽순환도로를 통해 직접 연결함으로써 환상형 외곽순환도로의 교통을 원활히 하는데 그 목적이 있으며, 이를 위해 교량 1개소, 지하차도 1개소, 터널 1개소, 생태통로 2개소, 교차로 1개소를 포함한 총 연장 5.4km, 왕복 6차로의 외곽순환도로를 건설하는 프로젝트이다. 행정중심복합도시 내 주요 장대교량은 도시구조물 미관기준에 의거 각 생활권별로 특색 있는 도시의 상징물이 되도록 계획하고 있다. 그 중 금강을 횡단하는 금빛노을교는 내부순환도로 아람찬교(금강4교)의 배경교량으로서 교면상 돌출되는 구조물의 높이비가 0.5 이하로 제한되는 요구조건에 부합하고 주변경관과 조화를 이루는 기능성과 독창성이 뛰어난 주경간장 175m의 하이브리드 아치교로 계획하였다. 또한 5생활권을 관통하는 외곽순환도로는 5생활권 내 소음저감을 위하여 총연장 3,835m(터널포함)의 장대 지하도로로 계획하였으며, 장대 지하도로의 특성을 감안하여 운전자의 폐쇄공포감 해소를 위한 썬큰 설치, 주행차량의 안전을 고려한 비상대피공간 확보 및 친환경 지능형 환기방재시스템 등을 도입하였다.