Computer simulation and sled test validation of a powerbase wheelchair and occupant subjected to frontal crash conditions.
Computer simulation and sled test validation of a powerbase wheelchair and occupant subjected to frontal crash conditions.
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DOI：
10.1109/86.769414
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发表时间：
1999-06-01
期刊：
影响因子：
--
通讯作者：
Digges, K
中科院分区：
文献类型：
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作者：
Bertocci, G E;Szobota, S;Digges, K
美国残疾人法案(ADA)导致越来越多的轮椅使用者寻求交通服务。这些人中的许多人无法转乘车辆，而需要坐在轮椅上旅行。不幸的是，轮椅的设计通常不具有与机动车座椅相同的乘员保护功能，坐在轮椅上的乘员在撞车时受伤的风险可能更高。为了研究碰撞水平力对轮椅及其乘员的影响，使用计算机建模来模拟碰撞条件是有用的。本研究使用动态集中质量碰撞模拟器，结合雪橇碰撞试验，开发了一个安全的商用动力基础和受约束乘员在20g/30英里/小时的正面机动车碰撞下的模型。将模拟生成的轮椅运动学、乘员加速度、绑扎力和乘员约束力的时程曲线与雪橇碰撞试验进行比较，以验证模型的有效性。将该模型的验证工作与ISO/SAE代理轮椅模型的验证结果进行了比较，发现该验证结果可接受。该轮椅-乘员仿真模型可用于研究轮椅碰撞响应或评价各种因素对乘员碰撞安全性的影响。
The Americans with Disabilities Act (ADA) has led to an increased number of wheelchair users seeking transportation services. Many of these individuals are unable to transfer to a vehicle and are instead required to travel seated in their wheelchairs. Unfortunately, wheelchairs are not typically designed with the same occupant protection features as motor vehicle seats, and wheelchair seated occupants may be at higher risk for injury in a crash. To study the effects of crash level forces on wheelchairs and their occupants, it is useful to simulate crash conditions using computer modeling. This study has used a dynamic lumped mass crash simulator, in combination with sled impact testing, to develop a model of a secured commercial powerbase and restrained occupant subjected to a 20 g/30 mph frontal motor vehicle crash. Time histories profiles of simulation-generated wheelchair kinematics, occupant accelerations, tiedown forces and occupant restraint forces were compared to sled impact testing for model validation. Validation efforts for this model were compared to validation results found acceptable for the ISO/SAE surrogate wheelchair model. This wheelchair-occupant simulation model can be used to investigate wheelchair crash response or to evaluate the influence of various factors on occupant crash safety.