• Title/Summary/Keyword: Side Impact Dummy

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Damage of Car Body and Passenger at Impact Contact (충돌 접촉에 있어서의 차체와 승객의 손상)

  • Han, Moon-Sik;Cho, Jae-Ung
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.20 no.3
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    • pp.280-283
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    • 2011
  • This study investigates the durability of car body and the safety of passenger inside car body in the case of the impact contact at passenger and car body. In case of front impact contact, maximum von Mises equivalent stress and principal stress become 3240.7MPa and 1634MPa respectively at the rear part of car body and the neck of dummy. And maximum total deformation occurred with 14.145mm at the hand of dummy. In case of side impact contact, maximum von Mises equivalent stress and principal stress become 7687.9MPa and 1690.7MPa respectively at the front part of car body and the lap of dummy. And maximum total deformation occurred with 16.414 mm at the foot of dummy. In case of rear impact contact, maximum von Mises equivalent stress and principal stress become 2366.6MPa and 1447MPa respectively at the front part of car body and the neck of dummy. And maximum total deformation occurred with 7.548mm at the rear part of car body. As the maximum von-Mises stress at side impact is shown with more than 700MPa as over two times at front or rear impact the danger of car body is increased. The great possibility of damage is shown at neck and hand of dummy with more than total displacement of 10mm.

Effect of Changing the Side Impact Dummy from EuroSID-1 to EuroSID-2 in the KNCAP Side Impact Evaluation (EuroSID-1에서 EuroSID-2로의 인체모형 변경이 KNCAP 측면충돌안전성 평가에 미치는 영향 연구)

  • Lim, Jae-Moon;Jung, Geun-Seup
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.5
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    • pp.125-132
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    • 2007
  • In order to provide consumers with safety informations of vehicles according to the Korean New Car Assessment Program(KNCAP), the evaluation results and the star ratings of 21 vehicles for the side impact tests have been reported since 2003. Now, the KNCAP considers changing the side impact dummy from EuroSID-1 to EuroSID-2 near future. The rib deflection of EuroSID-2 is 20-30% higher than that of EuroSID-1 because of the removal of "Flat Tops" effect. In this study, the effect of changing the side impact dummy from EuroSID-1 to EuroSID-2 in the KNCAP side impact evaluation is estimated through the previous KNCAP evaluation results. The results show that the decrease of the star ratings would be one star($\bigstar$) approximately.

Development of Side Impact Crash Simulation Methodology and Its Applications (측면충돌모의시험 방법 개발과 응용)

  • 하영호
    • Transactions of the Korean Society of Automotive Engineers
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    • v.8 no.1
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    • pp.101-109
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    • 2000
  • Occupant protection in the side impact of a car became one of the most important issues of car crashworthiness due to high injury level in a side impact crash. An accurate simulation of the side impact crash is an essential tool for the reduction of development time and cost for side impact safety system. This paper describes a new test methodology that can accurately generate the crash pulses of a vehicle and a door in a very cost-effective manner, and then evaluates the injury values of the dummy for the various sled pulses. This test methodology is simple and easy to approach because the door velocity is controlled by the hydraulic actuator and brake and the seat velocity is only adjusted by the friction force of the hydraulic brake. The superiority of the proposed test methodology is proven by the evaluation of dummy's injury values according to the change of the pressure of the hydraulic brake and by the application as a tool for the development of side airbag.

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A study on development of the pole side impact sled test using WorldSID (WorldSID를 이용한 기둥측면 충돌 슬레드 시험 개발 방법 연구)

  • Oh, Hyungjooon;Kim, Seungki;Lim, Kyungho
    • Journal of Auto-vehicle Safety Association
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    • v.5 no.2
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    • pp.5-10
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    • 2013
  • The pole side crash caused fatal injury by comparison with other crash impact mode such as frontal and rear crash. EuroNCAP proposed the pole side crash test using WorldSID(World Side Impact Dummy). The objective of this study is to develop the pole side impact sled test using dummy rib deflection between crash and sled test. In the pursuit of this purpose, we fabricated new pole side sled buck and test preliminary pole sled using ES-2re. Through this, we found the sled acceleration pulse scale. Hardness and thickness of the EPP affects the rib deflection. We conducted the pole sled test using WorldSID based on the preliminary results. As a result, rib deflection was shown to correlate well between crash test and pole side sled test.

Simulation Analysis for Comparison of WorldSID and ES-2re Dummy in Pole Side Impact Test Methods (기둥측면충돌시험법에서 WorldSID와 ES-2re 더미 안전성에 대한 해석적 연구)

  • Youn, Y.H;Han, W.;Choi, M.;Lee, E.;Kim, D.
    • Journal of Auto-vehicle Safety Association
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    • v.4 no.2
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    • pp.27-31
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    • 2012
  • In Korea, side impact type accidents are one of the main cause of fatality. MLTM and KATRI established sie impact regulation as well as NCAP type assessments to protect occupants. Recently, WP29 formed a informal group to study a possible harmonization of pole side impact test methods with WorldSID as a GTR. In this paper, two different dummies, ES-2 and WorldSID were evaluated with three different types of pole side impact test methods.

Construction and Evaluation of Scaled Korean Side Impact Dummies

  • Kim, Seong-Jin;Kwon Son;Park, Kyung-Hyun
    • Journal of Mechanical Science and Technology
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    • v.17 no.12
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    • pp.1894-1903
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    • 2003
  • It is necessary to have a dummy that describes the anthropometry of a victim with accuracy. This study presents three scaled side impact dummies constructed for the use of MADYMO. They represent five, fifty and ninety-five percentile Korean males ranged from the age of 25 through 39. Thirty-five anthropometric data were used to scale input files required for MADYSCALE. Geometries, inertia, joints and other parameters for dummies were scaled based on the configurations of EuroSID-1. This study proposes the lateral impact response requirements for head, thorax and pelvis of Korean side impact dummies. A lateral drop impact test was conducted for the head at the height of 200 mm. Lateral pendulum impact tests were also carried out for thorax and pelvis at three specific impact velocities. All these test results were obtained from simulation based on MADYMO. All the procedures of the three tests followed the requirement of ISO/TR 9790.

Injury Optimization Study of WorldSID and EuroSID2re under Pendulum Loadings (진자시험을 통한 EuroSID2 및 WorldSID 더미의 상해 최적화 연구)

  • K.S. Choi;K.S. Jeong;K.C. Kim;B.R. Ham
    • Journal of Auto-vehicle Safety Association
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    • v.6 no.1
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    • pp.41-47
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    • 2014
  • A new dummy has improved biofidelity from Fair to Good compare with EuroSID2re which is currently used for regulation tests and NCAP tests. Some instrumentation of each body region has been changed to measure the assessment of injury risk. The objective of this study is to find out the injury characteristic of each dummy and to calculate the relation between external force and injury for each dummy with pendulum tests. Finally, this study suggests the optimized external force to meet consumer tests. A new dummy named WorldSID for side impact will be introduced into EuroNCAP tests after 2015. Korea government is also planning to adopt WorldSID at KNCAP tests from 2017 and Global Technical Regulation (GTR) will also adopt WorldSID to oblique side pole crash.

The Study on control factor of WorldSID 50%ile dummy injury through AE-MDB side crash test (AE-MDB 측면 충돌 시험 시 WorldSID 50%ile dummy 상해치에 대한 제어인자 연구)

  • Hongyul Sun;Pyokyong Han;Jaesu Kim;Kiseok Kim;Ilsung Yoon
    • Journal of Auto-vehicle Safety Association
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    • v.6 no.1
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    • pp.5-9
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    • 2014
  • Over the past ten years, since the introduction of the side crash test regulation in Europe, much research work has been performed internationally to develop new and modified test procedures to improve the level of occupant protection offered by vehicles in side crash test. This research has been co-ordinated and finally contributed to development of an AE-MDB(Advanced European Moving Deformable Barrier) and WorldSID (Worldwide Side Impact Dummy). EuroNCAP(European New Car Assessment Program) has the plan to conduct AE-MDB side crash test using WorldSID from 2015 by replacing Progressive MDB and EuroSID II. Automobile manufacturers need to respond to these changes closely. This paper is to find dominant control factor and analyze it of WorldSID 50%ile dummy injury through AE-MDB side crash test by predicting best and worst condition. And control factors will be validated within EuroNCAP regulations. This paper is analyzed by DFSS(Design for six sigma) which contains 5 control factors and is evaluated by ANOVA with the data as a result of LS-DYNA analysis correlated with crash pulse from 50 kph AE-MDB side crash test using WorldSID 50%ile dummy.

Evaluation of EuroSID-2 & WorldSID in Pole Side Impact (기둥측면충돌시험에서 EuroSID-2와 WorldSID 인체모형 평가에 관한 연구)

  • Kim, Dea Up;Woo, Chang Gi
    • Journal of Auto-vehicle Safety Association
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    • v.7 no.1
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    • pp.40-44
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    • 2015
  • In recent years, WorldSID dummy has been continuously developed and investigated to be a better represent biolfidelic ATD as well as a device for replacement of the current existing EuroSID-2. In Korea, the side impact accident is one of the major severe accidents in terms of numbers of accidents and fatality. Since 2003, 50kph 90degree side crash test has been initiated as a safety standard with EuroSID-1 at the first stage and also same time 55kph impact speed test has been conducted as a part of KNCAP program. Currently only EuroSID-2 is accepted as a regulatory tool for vehicle certification and KNCAP. In order to make use of WorldSID of KNCAP in the distant futuer the tests with WorldSID is conducted experimentally.

Simulation Analysis and Comparison of New Frontal Impact Tests (신 정면 충돌 시험의 시뮬레이션 비교 분석)

  • Jung, Kyungjin;Youn, Younghan;Park, Jiyang;Kim, Dongseup;Oh, Myoungjin;Kwak, Youngchan;Son, Changki;Shin, Jaekon;Lee, Eundok;Kwon, Hae Boung
    • Journal of Auto-vehicle Safety Association
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    • v.9 no.2
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    • pp.20-25
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    • 2017
  • KNCAP is a program to evaluate the automobile safety, providing consumer vehicle safety assessment results. The safety evaluation tests are Frontal Impact, Offset Frontal Crash, Side Crash, Side Pole Crash, Rear Impact. This is the study of the offset frontal impact safety evaluation. Currently, IIHS is performing a small overlap test. NHTSA plans to implement the oblique moving deformable barrier test. Euro-NCAP plans to implement a mobile frontal impact test. Simulation is used to compare occupant behavior and injury. We have investigated whether the introduction of the test at KNCAP is necessary. The dummy model used in the simulation was the 50th percentile male Hybrid III dummy.