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최기현(Choi, Ki hyun),조의찬(Cho, Eui Chan),정재혁(Cheong, Jae Hyuk),최지환(Choi, Ji whan) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
The door impact beam is produced with composite materials that have an equal or greater impact performance against steel by using an integral molding process. Integrally molding process is a method for molding different materials at one time without the adhesive material and economical method that don’t need for a separate assembly process than other production method. Door impact beam is applied to the G-ROD and GMT for weight reduction and produced by applying the steel part for stiffness reinforcement.
김곤(Kon Kim),조의찬(Euichan Cho),장기수(Gisoo jang),오치성(Chisung Oh),천경섭(KyungsubChun) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Door biw is difficult & complex parts in a consisting of 8 items. and All part have s direct impact on the sealing performance. The number of sub parts means that function and performace may very depending on the tolerance if each parts and a combination made in consideration of the design tolerance condition and validation. This paper introduces a methodology for veifiying trying to actually produce these parts looking for a combnation of the worst conditions through tolerance analysis
이상현(Lee, Sang hyun),조의찬(Cho, Eui Chan),김진호(Kim, Jin Ho),최재훈(Choi, Jae Hoon),육민숙(Yuk, Min sook),구자성(Koo , Ja Sung),오종철(Oh,Jong Cheol),변성근(Byun, Seong guen) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
The door latch is difficult & complex parts in a consisting of 48 sub parts part and have a direct impact on the safety of the passenger. The lot number of sub parts means that function and performance may vary depending on the tolerance of each parts, and thus a combination made in consideration of the design tolerance condition and validation. This paper introduces a methodology for verifying trying to actually produce these parts looking for a combination of the worst conditions through tolerance analysis.
플래그 타입 아웃사이드 미러 도어 판넬 강성 구조 최적화
임화수(Lim Hwa Su),조의찬(Cho Ui Chan),전원석(Jeon Won Suk),허수영(Heo Su Young),신영철(Shin, Young Chul) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
The guide of design & evaluation is proposed about O/S mirror mtg structure , which is a evaluation method based on the measuring of deformation . As a result of the anlalysis, this paper propose the design guide with DR PNL structure and layouts.
박완수(Wansu Park),조의찬(Eui Chan Cho),전원석(Won Seok Jun),홍은표(Eun Pyo Hong),조한신(Han Shin Cho),이명렬(Myoung Ryoul Lee),최은호(Eun Ho Choi) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
A new point of view in interior trim is weight reduction. We developed a new door trim material to reduce the gravity. A Light wood-fiber material can reduce the weight( 40 % ↓) with 1.1~1.2T (down from 2.5T). But we should modify the stiffness for structure. First of all, we consider which structure is the best for quality/cost and weight. We analyze the structure for noise and stiffness. Whats more, optimize the process and reduce the increased cost.
동특성을 고려한 도어 인너판넬 강건구조 및 시험법 연구
이종원(Lee, Jong Won),조의찬(Jo, Eui Chan),전원석(Jun, Won Suk),조경호(Cho, Kyoung Ho),최기현(Choi, Ki Hyun),변민형(Byun, Min Hyung) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Many kind of vibration can be delivered to user as a type of noise which is caused by external factor or vibration of automobile parts itself. And those noises can be amplified when forced frequency and natural frequency matched. We call this phenomenon “Resonance” and this is an important phenomenon that we have to escape or make it smaller. To reduce vibration and noise, escaping match of frequency has a limit because of many reasons. In this study, we are going to focus on how to make the amplified noise smaller. So far, during development of car, what we measure to know stiffness of door inner panel is static stiffness only. But static stiffness can’t represent vibration characteristic of door inner panel. So we need to add the concept of dynamic stiffness into development process to reduce noise. To find optimal design method which can make noise smaller we did modal test and analysis.
박완수(Wansu Park),조의찬(Eui Chan Cho),백승현(Seung-hyun Baek),조한신(Han Shin Cho),최석규(Seok kyu Choi),김종대(Jong dae Kim) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
A new point of view in interior trim is weight reduction. We developed a new door trim material to reduce the gravity. A Light wood-fiber material can reduce the weight( 40 % ↓) with 1.1~1.2T (down from 2.5T). We mass-produced the Light wood-fiber door trim in All new K7 project with 3,000won/kg cost increasing. So, we contrive the new types of 1 step covered light-fiber door trim using that’s ventilation property and reduce the cost. First of all, we consider how to reduce the process of the covering of the wood-fiber. And describe the method to secure the quality and cost.
김대철(Daechul Kim),조의찬(Euichan Cho),전원석(Wonseok Jun),백승현(Seunghyun Back),김용태(Yongtae Kim) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
A new point of view in door belt molding is variable shape, which is a new method based on press or mold and extrusion. This paper aims to make 1-piece belt molding with variable shape which has small angle of corner unless any other problems of glass moving ability for C project car.