Development and validation of a computer crash simulation model of an occupied adult manual wheelchair subjected to a frontal impact
Development and validation of a computer crash simulation model of an occupied adult manual wheelchair subjected to a frontal impact
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DOI：
10.1016/j.medengphy.2009.01.008
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发表时间：
2010-04-01
影响因子：
2.2
通讯作者：
Bertocci, G.
中科院分区：
文献类型：
--
作者：
Dsouza, R.;Bertocci, G.
轮椅主要是为移动而设计的，并不一定是为了用作机动车辆座椅。然而，许多轮椅作为无法转移到汽车座椅上的个人的汽车座椅。对轮椅进行雪橇测试，在一定程度上确定了用作机动车座椅的轮椅的耐撞性。计算机模拟为雪橇测试提供了一种补充方法，以评估轮椅在碰撞条件下的反应和负载。在这项研究中，建立了一个非线性、动态的计算机模型，并对轮椅和乘员进行了正面碰撞试验(ANSI/RESNA WC19)进行了验证。该模拟模型是利用两次正面碰撞20g/48公里/小时雪橇试验的数据开发的，其中包括相同的成人手动轮椅，用4点倾倒固定，由第50百分位成年男性拟人化测试装置(ATD)占据，用3点乘员约束系统约束。此外，通过对轮椅和乘员运动学的直观比较，以及对结果测量的统计评估，根据雪橇数据验证了该模型。所有的统计评估都在验收标准之内，表明该模型对雪橇试验的高度预测性。这一模型为制定耐撞性轮椅设计指南以及开发交通安全轮椅技术提供了一个有用的工具。爱思唯尔有限公司代表IPEM出版
Wheelchairs are primarily designed for mobility and are not necessarily intended for use as motor vehicle seats. However, many wheelchairs serve as vehicle seats for individuals unable to transfer to a vehicle seat. Subjecting wheelchairs to sled testing, in part establishes the crashworthiness of wheelchairs used as motor vehicle seats. Computer simulations provide a supplemental approach for sled testing, to assess wheelchair response and loading under crash conditions. In this study a nonlinear, dynamic, computer model was developed and validated to simulate a wheelchair and occupant subjected to a frontal impact test (ANSI/RESNA WC19). This simulation model was developed utilizing data from two frontal impact 20g/48 km/h sled tests, which consisted of identical, adult manual wheelchairs secured with 4-point tiedowns, occupied with a 50th percentile adult male anthropomorphic test device (ATD), restrained with a 3-point occupant restraint system. Additionally, the model was validated against sled data using visual comparisons of wheelchair and occupant kinematics, along with statistical assessments of outcome measures. All statistical evaluations were found to be within the acceptance criteria, indicating the model's high predictability of the sled tests. This model provides a useful tool for the development of crashworthy wheelchair design guidelines, as well as the development of transit-safe wheelchair technologies. Published by Elsevier Ltd on behalf of IPEM