Development of Sub System Sled-Based Lateral Pole Impact Test

Gustavo Maturana･Alba Marquez･Jordi Vinas･Genis Mensa･Carles Vidal･Victor Garcia (Applus+ Idiada)

During the vehicle development, the full-scale testing is one of the most timing and resources consuming part of the process. A solution has been proposed where full-scale Lateral Pole tests can be simplified to subsystem sled tests, requiring less resources in terms of BiW while allowing to reproduce impact tests conditions, where vehicle deceleration and intrusion are applied in a controlled way to reproduce crash kinematics. This paper explores the development of this sub-system setup, which can be applied afterwards for restraint system development. It presents CAE activities, component characterisation tests, sub-system validation and methodology definition involved in the process.

A Comprehensive Approach to Hydrogen Vehicle Crash Testing Challenges

Victor Garcia Santamaria･Miguel Angel Gallego Ruiz･Genis Mensa Vendrell･Carles Vidal Aguado (Applus+ IDIADA)

Crash testing of hydrogen-powered vehicles presents unique challenges compared to its other clean alternatives such as electric vehicles. Main challenges in security and quality involve preventing and containing leaks, managing hydrogen's high flammability and flame invisibility. Crash safety regulations also present its own challenges, since it is required to be able to test at nominal tank pressure with hydrogen to fulfill them. This paper goes through all the challenges mentioned and how an experienced crash test laboratory faces them by developing new methodologies, procedures, protocols, and tools, and using possible alternative gases to prepare and test those vehicles.

Raising the bar for heavy quadricycles safety in urban mobility
-Structure and occupant protection assessment of a L7-e vehicle through Euro NCAP tailored crash test protocols-

Carles Vidal Aguado･Jordi Salvat Pamies･Emilia Romero Tienda･Genis Mensa Vendrell･Victor Garcia Santamaria (Applus+ IDIADA)

Euro NCAP 2014-2016 testing campaign results for heavy quadricycles revealed safety concerns. The EU-funded REFLECTIVE project aimed to enhance the safety perspective for this category vehicles by developing a safe, compact, zero-emission L7-electric vehicle for urban use and last-mile deliveries. This paper evaluates the vehicle's passive safety through various crash tests: subsystem test, frontal crash, frontal sled, and lateral crash. By implementing adequate restraint systems, validating deformation and occupant interaction through simulations, and employing appropriate design, the REFLECTIVE vehicle was successful in raising safety standards for heavy quadricycles after applying the Euro NCAP testing protocols for this type of vehicles.

Evaluation of ATD and Human Body Model Responses in Rear Impact Scenarios

Simona Roka･Pablo Lozano (IDIADA Spain)･XuFeng Li (IDIADA China)･Sergio Crespo (IDIADA Spain)

This study compares the BioRID II anthropomorphic test device and THUMS version 6.1 human body model in Euro NCAP Whiplash assessment conditions, addressing the critical issue of rear-impact collisions which represent 27.8% of passenger vehicle crashes. Using an open-source environment with VIRTUAL project components, the research analyzed head, T1, and pelvis excursions, along with moments, forces, and accelerations at key anatomical landmarks. Results revealed significant differences between ATD and HBM responses, while seat adjustments improved BioRID II's T1 acceleration. Biofidelity assessment showed favorable correlation at the cervical vertebrae level, validating both tools for whiplash injury evaluation.

前突時のシート位置による乗員下肢傷害の研究

根岸　俊充・糟谷　勇太・永野　翔悟・林　重希・今井　裕明・中根　裕司（トヨタ自動車）

各アセスメントによって多様な評価条件(速度，体格，着座位置)の導入が議論されている．本研究は，前突時にシート最後端位置での下肢傷害への影響調査を目的とした．下肢移動量増加に伴い足首が底屈側にロックしモーメントが発生する．ダミー足首は底屈側の人体忠実性に課題があり，下肢傷害の評価導入への課題を示した．

THUMSを用いた歩行者衝突における筋活性の影響調査

宮﨑　拓真・飯塚　洋二朗・高比良　与志樹・宮崎　浩・林　重希・今井　裕明・中根　裕司（トヨタ自動車）

日本の交通事故死者数における，歩行者の死者数は36%と高い．歩行者の死傷者低減のために，その傷害発生機序の解明が望まれる．本研究では，人体FEモデルTHUMSを用いて衝突前の歩行者の身構え動作が衝突中の挙動に与える影響を調査した．従前の研究で筋活性時のTHUMS体幹可動域を人に合わせた．筋活性の有無で異なる挙動を示した．