...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>SAE International Journal of Materials and Manufacturing >Simulation and Optimization of an Aluminum-Intensive Body-on-Frame Vehicle for Improved Fuel Economy and Enhanced Crashworthiness - Front Impacts
【24h】

Simulation and Optimization of an Aluminum-Intensive Body-on-Frame Vehicle for Improved Fuel Economy and Enhanced Crashworthiness - Front Impacts

机译：铝制高强度车上车身的仿真和优化，以改善燃油经济性和提高耐撞性-正面影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Motivated by a combination of increasing consumer demand for fuel efficient vehicles, more stringent greenhouse gas, and anticipated future Corporate Average Fuel Economy (CAFE) standards, automotive manufacturers are working to innovate in all areas of vehicle design to improve fuel efficiency. In addition to improving aerodynamics, enhancing internal combustion engines and transmission technologies, and developing alternative fuel vehicles, reducing vehicle weight by using lighter materials and/or higher strength materials has been identified as one of the strategies in future vehicle development. Weight reduction in vehicle components, subsystems and systems not only reduces the energy needed to overcome inertia forces but also triggers additional mass reduction elsewhere and enables mass reduction in full vehicle levels. Mass reduction can be achieved by removing materials that are not needed, substituting materials for those with lower density and/or higher strength, changing vehicle components and/or architectures to those require less material, or combinations of the above. New manufacturing and joining technologies and vehicle assembly processes as well as the associated simulation methodologies and tools also need to be developed in order to shift from current steel-intensive vehicles to lighter-weight vehicles with dissimilar materials, such as new generation advanced high strength steels, aluminum, magnesium, and composites. In this paper, computer simulations and design optimizations conducted to develop an aluminum-intensive body-on-frame vehicle with improved fuel economy and enhanced crashworthiness are presented. The modeling of a body-on-frame vehicle is more difficult than that of a traditional unitized vehicle due to the challenges associated with components such as body mounts and ladder frame structures that are not part of unitized vehicle construction. In addition, material database and constitutive laws representing the mechanical properties of new high strength aluminum alloys and different joining methods utilized in the aluminum-intensive vehicle needed to be established. The models of the vehicle's aluminum-intensive bodies and cargo beds, high strength steel ladder frames, body mounts, and joining methods were developed based on material coupon and component tests. To minimize vehicle weight for improved fuel economy and to optimize the vehicle crash pulse and intrusion simultaneously for enhanced crashworthiness, design optimizations of geometry, shape, material, thickness, and joining method were conducted for major components in crash zones. Extensive full vehicle computer simulations with different frontal impact conditions and various vehicle configurations were performed during the design phase not only to enhance crash performance for federal safety regulations and internal requirements but also to meet manufacturing constraints.
机译：消费者对节油汽车的需求不断增长，温室气体排放更加严格以及预期的未来公司平均燃油经济性（CAFE）标准的共同作用，促使汽车制造商在车辆设计的所有领域进行创新，以提高燃油效率。除了改善空气动力学，增强内燃机和传动技术以及开发替代燃料车辆外，通过使用更轻的材料和/或更高强度的材料来减轻车辆的重量已被确定为未来车辆开发的策略之一。减轻车辆部件，子系统和系统的重量，不仅减少了克服惯性力所需的能量，而且还触发了其他地方的进一步质量减轻，并实现了整车水平的质量减轻。可以通过去除不需要的材料，将材料替换为密度较低和/或强度更高的材料，将车辆部件和/或结构更改为需要较少材料的材料或上述方法的组合来实现质量降低。还需要开发新的制造和连接技术，车辆装配过程以及相关的仿真方法和工具，以便从当前的钢铁密集型车辆转向使用异种材料的轻型车辆，例如新一代高级高强度钢。 ，铝，镁和复合材料。在本文中，介绍了计算机模拟和设计优化，以开发具有改善的燃油经济性和增强的耐撞性的铝制高强度框架车。由于与不属于联合车辆构造的一部分的诸如车身底座和梯子框架结构之类的部件相关联的挑战，因此与传统的联合车辆相比，框架上车辆的建模更加困难。另外，需要建立代表新的高强度铝合金的机械性能的材料数据库和本构定律，以及在铝密集型车辆中使用的不同连接方法。车辆的铝密集型车身和货舱，高强度钢梯架，车身安装件和连接方法的模型是基于材料试样和组件测试而开发的。为了最小化车辆重量以提高燃油经济性，并同时优化车辆碰撞脉冲和入侵以增强碰撞性能，对碰撞区域中的主要部件进行了几何形状，形状，材料，厚度和接合方法的设计优化。在设计阶段进行了具有不同正面碰撞条件和各种车辆配置的全面的整车计算机模拟，不仅提高了联邦安全法规和内部要求的碰撞性能，还满足了制造限制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号