http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
측면 충돌 성능 향상을 위한 차체 필러 단면의 최적 설계
장효승,이상범,임홍재 대한기계학회 2020 大韓機械學會論文集A Vol.44 No.8
The design for the B-pillar sections of a small-sized passenger car was optimized based on the side impact test method specified by the Insurance Institute for Highway Safety (IIHS) to improve the performance of the vehicle's robustness against side impact. The section stiffnesses at eight specific locations for the side structure were set as design variables, and a sensitivity analysis was performed for the maximum intrusion of the B-pillar resulting from the side impact. Through this process, five design variables (three section shapes and two panel thicknesses) for optimizing side impact performance were determined. By applying the five determined design variables in the Box-Behnken experimental design method, the response surface function for the mass of the B-pillar was derived. The optimal design was determined by using the derived function, and the combination of the five design variables was found. Through optimization, the mass of the B-pillar was reduced by 3.1 % compared to the initial model, and the distance between the driver's centerline and the maximum intrusion position of the B-pillar was to be 0.87 mm, thereby improving the IIHS rating from poor for the initial model to marginal. 본 연구에서는 차량의 측면 충돌에 대한 성능 향상을 위해 IIHS에서 시행하는 측면 충돌 시험법을 기준으로 소형승용차의 B-필러 단면들에 대한 최적 설계를 수행하였다. 측면 구조에 대하여 8개소 특정 위치에서의 단면 굽힘 관성모멘트를 설계 변수로 설정한 후 측면 충돌에 따른 B-필러 최대 침입량에 대한 민감도 해석을 시행하였으며, 이를 통해 측면 충돌 성능 최적화를 위한 세 개의 단면 형상과 두 개의 패널 두께 등 5개의 설계 변수를 결정하였다. 선정된 5개의 설계 변수에 대해 Box-Behnken 실험계획법을 이용하여 B-필러의 질량에 대한 2차 반응 표면 함수를 도출하였다. 도출된 함수를 이용하여 최적 설계를 수행하였으며, 이를 통해 5개의 설계 변수 조합을 찾았다. 최적화를 통하여 B-필러의 질량은 초기 모델보다 3.1% 감소하였으며, 또한 운전석 중심선과 B-필러의 최대 침입 위치 사이의 거리는 0.87mm가 되어 IIHS 등급이 초기 모델의 poor 등급에서 marginal 등급으로 향상되었다.
새로운 한국 측면충돌 신차안전도 평가방법 변경에 따른 차체 거동에 관한 연구
김승진(Seungjin Kim),양희종(Heejong Yang),김인규(Inkyoo Kim),김용석(Yongsuk Kim) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
Recently occupant protection is becomes important of each country, the New Car Assessment Program tests are to be strengthened. Korea NCAP and Euro NCAP crash test of the enhanced regulation will apply in 2015. The weight of AEMDB is 350kg heavier and 200mm wider than the Progressive MDB. This paper is purposed to analyze dynamic body deformation comparison between Korea NCAP side crash test with progressive MDB and AE-MDB. Through this analyze try to find out the relationship between the vehicle deformation and Occupant Injury
AE-MDB 대응을 위한 Side Structure 민감도 분석 및 B-pillar 최적 설계
김승진(Seungjin Kim),양희종(Heejong Yang),박준성(Joonsung Park) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
This paper presents the optimization of B-pillar structure to meet the Euro NCAP side crash test with AE-MDB. To reduce the occupant injury, vehicle structure and restraint system should be optimized. In the side crash test, B-pillar is one of the main part of load path and main factor to increase the occupant injury. The objective of this paper is structure optimization of the B-pillar to archive high rating in the Euro NCAP side crash test with AE-MDB.
고강도 강판 ULSAB-AVC 모델과 일반강판 모델의 충돌성능 비교 평가
윤종헌(Jongheon Yoon),허훈(Hoon Huh),김세호(Seho Kim),김홍기(Hongkee Kim),박성호(Seungho Park) 한국자동차공학회 2006 한국 자동차공학회논문집 Vol.14 No.3
As the regulation and assessment program for safety of passengers become stringent, automakers are required to develop lighter and safer vehicles. In order to fulfill both requirements which conflict with each other, automobile and steel companies have proposed the application of AHSS(Advance High Strength Steel) such as DP, TRIP and martensite steel. ULSAB-AVC model is one of the most remarkable reactions to offer solutions with the use of steel for the challenge to improve simultaneously the fuel efficiency, passenger safety, vehicle performance and affordability. This paper is concerned with the crash analysis of ULSAB-AVC model according to the US-SINCAP in order to compare the effectiveness between the model with AHSS and that with conventional steels. The crashworthiness is investigated by comparing the deformed shape of the cabin room, the energy absorption characteristics and the intrusion velocity of a car.