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Altair > 实例探究 > 通过联合仿真优化制动系统性能:Ankers 的案例研究
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Optimizing Brake System Performance through Co-simulation: A Case Study by Ankers

技术
  • 传感器 - 红外传感器
  • 传感器 - 热导传感器
适用行业
  • 汽车
  • 设备与机械
适用功能
  • 产品研发
用例
  • 虚拟原型与产品测试
  • 虚拟现实
服务
  • 系统集成
挑战
Ankers 是一家为汽车原始设备制造商和一级供应商提供仿真、设计和开发服务的公司,面临着确定制动盘和制动片的热影响对车辆制动距离的挑战。车辆减速时制动器产生的摩擦热会对制动系统产生各种负面影响,包括制动盘热裂纹、过早磨损或制动失效,以及由于高温下摩擦系数变化而导致制动距离增加。目标是通过理解和减轻这些影响来优化系统行为。面临的挑战是通过联合仿真表明在考虑热效应时仿真结果会更加准确,并向现有和未来的汽车客户展示公司的联合仿真能力。
关于客户
Ankers 是一家通过提供模拟、设计和开发服务来支持客户开发新产品的公司。该公司专注于从头开始开发特种汽车,包括为多家欧洲和中国汽车原始设备制造商和一级供应商开发电动汽车和内燃机汽车、一次性超级汽车和赛车。 Ankers 的工程师致力于走在技术的最前沿,并正在使用最先进的工具和开发方法。他们选择的工具集之一是 Altair 的 HyperWorks 套件,Ankers 的仿真团队自 2014 年成立以来一直在使用该套件。这些工具已用于众多仿真和开发项目,其中包括结构分析和优化任务。
解决方案
Ankers 使用联合仿真方法,应用 HyperWorks 套件的多体动力学工具 MotionView 和使用一维方法模拟和优化多学科系统的解决方案 SolidThinking Activate。本研究中使用的模型是整车模型和制动系统模型,包括制动盘和制动片。这两种模型都是在 MotionView 中创建的,使用了该软件通过其车辆库提供的各种系统模板。为了考虑制动过程中能量转换引起的热影响,多体系统与 Activate 进行了联合仿真。这使得工程师能够研究盘垫接触引起的温度对制动距离的影响。联合仿真模型是在 MotionView(多体系统加高级驱动程序)和solidThinking Activate(摩擦热相关模型)中建立的。
运营影响
  • The results received from the co-simulation showed an increased braking distance caused by a reduction of the friction co-efficient when the braking pad's temperature increased. The results were compared and validated with results from an existing complex model taken from literature. The good results Ankers received with this study proved that Ankers is prepared to include co-simulation into their service portfolio. The study also shows that solidThinking Activate offers a perfect addition to multibody systems, providing the possibility to include block diagram models to complete the overall system in a very easy manner, that makes it look “natural”. In this way the engineers can stay within their familiar simulation environment while contributing to the system approach.
数量效益
  • The co-simulation results were more accurate than those received from a multibody simulation only.
  • When the temperature is taken into consideration, the example model showed that the vehicle would stop after 54m; without considering the effect the increased temperature has on the system, the simulation model resulted in a stop after 50m.
  • Four meters difference in stopping distance can make a significant difference when developing a brake system.

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