轨道车辆创新安全系统：案例研究
技术
- 功能应用 - 运输管理系统 (TMS)
- 传感器 - 自动驾驶传感器
适用行业
- 汽车
- 运输
适用功能
- 物流运输
- 产品研发
用例
- 现场人员安全管理
- 公共交通管理
服务
- 系统集成
- 测试与认证
关于客户
Sharma & Associates (SA) 是一家为铁路行业提供工程解决方案的公司。他们专注于铁路机械和基础设施工程，以及汽车和消费电子行业的机械工程项目。自 1995 年以来，SA 为其客户提供安全、有效和高效的解决方案，其中包括联邦铁路管理局 (FRA)、美国铁路协会 (AAR)、铁路和运输机构、轨道车辆制造商和轨道车辆零部件制造商。 SA 还与美国交通部下属的国家运输局 (VOLPE) 合作，帮助运输界预测新出现的技术、运营和体制问题。
挑战
火车相撞虽然并不常见，但可能会造成毁灭性的影响，尤其是对经常不受保护的铁路工程师而言。前轨道车的内部设计可以承受中度到重度的冲击，但工程师控制台实际上没有受到保护，使工程师很容易受到可能危及生命的冲击伤害。 Sharma & Associates (SA) 是一家铁路行业工程解决方案提供商，发起了创建工程师保护系统 (EPS) 概念的研究。然而，SA 不熟悉必要的安全要求、可用系统或影响环境的整体性能调整，因此需要合作伙伴帮助开发新系统。 EPS 必须满足特定标准：它不能由工程师触发，也不能干扰工程师离开控制车。
解决方案
SA 为该项目寻求了 Altair ProductDesign 的帮助。 Altair 的第一个任务是使用 HyperWorks 预处理器 HyperMesh 创建标准铁路运营商车厢内部的精确有限元 (FE) 模型。然后，他们将一个人体模型引入环境中，并将其放置在面向控制面板的工程师座位上。 Altair 的碰撞专家尝试了多种安全气囊类型、尺寸、位置和流量，并开发了一种新型可变形护膝以吸收碰撞过程中的冲击力。该团队开发的 EPS 系统将汽车乘客式安全气囊系统与可压碎的膝垫相结合，将伤害降至最低，同时满足未系安全带乘员的分隔、出口和功能要求。开发工作在系统和子系统级别使用分析建模，并结合使用 HyperWorks 的 RADIOSS 求解器进行的一系列准静态和动态雪橇测试，来开发和演示系统级性能。
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