• 제목/요약/키워드: Car crash

검색결과 205건 처리시간 0.027초

자동차 충돌 해석을 위한 접착부 해석 모델 개발 (Adhesive Bonding Model Development for Car Crash Analysis)

  • 최영수;김종곤;이세헌;이희범;장인성;문용규;김인준
    • 대한용접접합학회:학술대회논문집
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    • 대한용접접합학회 2006년 추계학술발표대회 개요집
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    • pp.45-47
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    • 2006
  • Lightweight design, safety, vibration, energy absorption capability can no longer achieve without adhesive bond joint. Base on those concepts and cost reduction, adhesive bond FEM model development has been done. The FEM analysis and experiments were conducted in this study. Crash condition is 143 Kg Hammer weight and unit meter Height. and then These test results were used to develop resonable FEM model. To estimate which FEM model is resonable, compare hybrid joint specimen experiment results with FEM analysis results. Conclusively this study achieves optimization bonding model related crash and adhesive bond jointed hat profile crash characters.

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실험계획법을 이용한 구조물의 최적설계 (Optimal Design for a Structure Using Design of Experiment)

  • 고성호;한석영;최형연
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2001년도 춘계학술대회 논문집(한국공작기계학회)
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    • pp.34-39
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    • 2001
  • The median barrier is one of the roadside hardware to prevent severe human and property damage from highway traffic accidents. The foreign standard of concrete median barrier was introduced and implemented without modification fitting to domestic vehicle and highway condition. In a car accident, median barrier doesn't protect vehicle effectively, especially for heavy vehicle such as bus and heavy truck. The purpose of this study is to develop the optimal performance design of concrete median barrier using the design of experiment with crash simulation analysis which is done by Pam-Crash that is one of the commercial crash simulation software. As a result of this study, an optimal design of concrete median barrier is obtained considering von Mises stress, volume and COG acceleration of truck.

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철도차량의 Crashworthiness에 관한 실험 및 해석적 연구 (An Experimental and FEA on Crashworthiness of Rolling Stock)

  • 박경환;이정수;이장욱;박근수
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 춘계학술대회 논문집
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    • pp.2040-2045
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    • 2008
  • The priority of Crashworthiness concept for rolling stock is progressively increasing to reduce the damage of drivers and passengers as well as the car. For the first step of this research, the analysis of the crash elements have been performed. Also the longitudinal collapse force and mode is important point for whole carbody structure to guarantee the lower force at end part rather than the main passenger area. The carbody quasi-static collapse analysis and real test has been performed in the research. The crash elements FEA and test has been performed as well. After the initial Analysis and test, the correlation analysis between the FEA and test has been performed by FEA tunning. All this result will be used for real crashworthiness design for carbody structure.

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차량 시뮬레이션과 경로 라이브러리에 기반한 차량 애니메이션 저작도구 (Vehicle Animation Making Tools based on Simulation and Trajectory Library)

  • 정진욱;강다은;권태수
    • 한국컴퓨터그래픽스학회논문지
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    • 제23권5호
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    • pp.57-66
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    • 2017
  • 본 연구는 물리 기반의 자동차 애니에이션 기술을 연구하였으며, 일반인도 손쉽게 차량 애니에이션을 제작할 수 있도록 직관적인 저작도구를 제안하였다. 사용자가 직접 차량의 이동 경로 및 속도를 지정하면, 이동 경로의 방향적 특성에 기반한 시뮬레이션 구간 분할과 피드백 기반 주행 경로 탐색 기법을 통해 기존 연구보다 빠르고 정확한 주행 시뮬레이션을 수행하도록 하였다. 결과적으로 차선 변경 및 추월을 포함한 단순 주행 애니메이션뿐만 아니라 기존 관련 연구에는 없었던 차량 충돌 애니메이션 또한 제작할 수 있다. 아울러 차체 모델을 실제 차량과 유사하게 설계하였기 때문에, 제동 시 차량이 미세하게 혼들리는 현상이나 추돌 시 차량이 찌그러지는 현상 등 실제에 가까운 차량의 웅직임을 묘사할 수 있다.

차대차 추돌사고 재현시험을 통한 경추염좌 상해 위험도 연구 (Whiplash Injury Case Studies through Low Speed Rear-end Crash Tests)

  • 임남경;심상우;정현철
    • 한국자동차공학회논문집
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    • 제24권4호
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    • pp.432-438
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    • 2016
  • Whiplash injuries in low-speed rear-end collisions are the most common injuries and has been a social issue in insurance industry, such as excessive medical claim costs along with exaggerated injuries of victims and treatments from hospitals. According to the Korea Insurance Development Institute reports, the number of claims by rear-end collision was approximately 703,000, which accounts for 53.6 % of the total car-to-car collisions in 2014. Part of the neck injury claims in the Korea car insurance was approximately 28.3 %. Furthermore, approximately 98.4% of the injured persons in rear-end collisions sustained minor injuries under AIS2. In order to improve this situation as well as find out the severity of neck injuries from rear-end collision, the Korea Automobile Insurance Repair Research and Training Center conducted car-to-car rear-end crash tests that striking vehicles(SUV) collided into different sizes of struck-vehicles(small, middle, and large sedan) at the impact speeds of 8 km/h ~ 16 km/h. In order to analyze the whiplash injury, the BioRID-II was seated in each struck-vehicles, and the neck injury criteria(NIC), head contact time, maximum vehicle accelerations, and mean vehicle accelerations were calculated from values from the accelerations of the dummy and the struck-vehicles.

승용차 시트프레임의 강도해석 (The Strength Analysis of Passenger Car Seat Frame)

  • 임종명;장인식
    • 한국자동차공학회논문집
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    • 제11권6호
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    • pp.205-212
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    • 2003
  • This paper may provide a basic design data for the safer car seat mechanism and the quality of the material used by finding out the passenger's dynamic behavior when protected by seat belt during collision. A computer simulation with finite element method is used to accomplish this objective. At first, a detailed geometric model of the seat is constructed using CAD program. The formation of a finite element from a geometric data of the seat is carried out using Hyper-Mesh that is the commercial software for mesh generation and post processing. In addition to seat modeling, the finite element model of seat belt and dummy is formed using the same software. Rear impact analysis is accomplished using Pam-Crash with crash pulse. The part of the recliner and right frame is under big stress in rear crash analysis because the acceleration force is exerted on the back of the seat by dummy. The stress condition of the part of the bracket is checked as well because it is considered as an important variable on the seat design. Front impact model which including dummy and seal belt is analyzed. A Part of anchor buckle of seat frame has high stress distribution because of retraction force due to forward motion of dummy at the moment of collision. On the basis of the analysis result, remodeling and reanalysis works had been repeatedly done until a satisfactory result is obtained.

박판성형가공을 고려한 자동차 충돌해석 (Crash Analysis of the ULSAB-AVC Model with Considering Forming Effects)

  • 허훈;윤종헌;바오이동;김세호;박성호
    • 소성∙가공
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    • 제15권8호
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    • pp.556-561
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    • 2006
  • Most of auto-body members are composed of stamping parts. These parts have the non-uniform thickness and plastic work hardening distribution during the forming process. This paper is concerned with the side impact analysis of the ULSAB-AVC model according to the US-SINCAP in order to compare the crashworthiness between the model with and without considering the forming effect. The forming effect is ca]ciliated by one-step forming analysis for several members. The crashworthiness is investigated by comparing the deformed shape of the cabin room the energy absorption characteristics and the intrusion velocity of a car. The result of the crash analysis demonstrates that the crash mode, the load-carrying capacity and energy absorption can be affected by the forming effect. It is noted that the design of an autobody should be carried out considering the forming effect for accurate assessment of crashworthiness.

시뮬레이션 기법을 이용한 차량내 전동휠체어 탑승자의 전방 충돌시 안전에 관한 연구 (The Safety Assessment of Wheelchair Occupants in Road Passenger Vehicles with the Frontal Crash: a Computer Simulation)

  • 이영신;이기두;임현균
    • 대한기계학회논문집A
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    • 제29권11호
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    • pp.1518-1526
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    • 2005
  • With increasing need of transportation services for people with disabilities and the aged, wheelchairs are used as their assistive devices to participate in daily and recreational activities and as seats of motor vehicle. However, as wheelchairs are primarily designed fer mobility assistive devices, not for vehicle seats, wheelchair users may experience serious injury when they meet car crashes. To date, neither engineering guidance for a wheelchair mounting system on the vehicle floor nor safety assessment analysis by a car crash has been studied for the domestic users. In this paper, in accordance with the ANSVRESNA WC-19, a fixed vehicle mounted wheelchair occupant restraint system (FWORS), wheelchair integrated restraint system (WIRS), and wheelchair integrated x-bend restraint system (WIXRS) subjected to frontal impact (20 g, 48 U) were analyzed using compute. simulations for domestic users. We present surrogate wheelchair occupant safety by head injury criteria (HIC), motion criteria (MC), and combined injury criteria (CIC).

차량 추락 및 전복 사고 대처를 위한 인명구조 시스템 설계 및 구현 (Design and implementation of a lifesaving system for handling a car crash and rollover)

  • 김찬구;김용주;문은광;임아영;권순량
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2016년도 추계학술대회
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    • pp.622-625
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    • 2016
  • 우리나라는 삼면이 바다로 구성되어 있고 산악지형이 65% 이상이며 강수량이 높은 편이다. 따라서 차량 전복 및 추락 사고가 빈번히 일어나고 있어 이에 대비한 인명구조시스템 개발이 시급히 요구되고 있다. 본 논문에서는 차량 전복 및 추락사고 대처용 인명구조 시스템을 설계 및 구현하고 시험을 통해 기능을 검증하였다.

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승용차용 프론트 사이드 조립체의 박판 두께 조정에 따른 붕괴모드 제어에 관한 역설계적 유한요소 층돌해석 (Crash FE Analysis of Front Side Assembly of Passenger Cars for Management of Collapse Shape Via Variation of Thickness with Reverse Engineering)

  • 김용우;김정호
    • 한국자동차공학회논문집
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    • 제16권2호
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    • pp.106-113
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    • 2008
  • The goal of crashworthiness is an optimized vehicle structure that can absorb the crash energy by controlled vehicle deformations while maintaining adequate space so that the residual crash energy can be managed by the restraint systems to minimize crash loads transfer to the vehicle occupants. Front side assembly is one of the most important energy absorbing components in relating to the crashworthiness design of vehicle. The structure and shape of the front side assemblies are different depending on auto-makers and size of vehicles. Thus, it is not easy to grab an insight on designer's intention when you glance at a new front side member without experiences. In this paper, we have performed the explicit nonlinear dynamic finite element analysis on the front side assembly of a passenger car to investigate the effect of thickness distribution of the front side assembly on the collapse shape, which is important in the aspect of controlling deformation to maintain adequate space, from the viewpoint of reverse engineering. To do this, we have performed crash FE analysis for the assembly by varying the thickness distribution of the assembly.