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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part D. Journal of Automobile Engineering >Development of a consistent continuum of the dimensional parameters of a vehicle for optimization and simulation
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Development of a consistent continuum of the dimensional parameters of a vehicle for optimization and simulation

机译：为优化和仿真开发车辆尺寸参数的连续连续体

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摘要

Parametric vehicle modeling permits rapid iteration and optimization of vehicles in the conceptual design phase. A significant portion of vehicle design can be optimized parametrically without knowing specific details based on computer-aided design. Many overall characteristics of a vehicle such as the curb mass, the location of the center of gravity, the key dimensions, the occupant packaging, and the cargo volume can be assessed and improved at the parametric level. Targets for the vehicle such as the 0-60 mile/h acceleration time, the stopping distance, the fuel economy, the low-speed turn radius and aspects of the vehicle dynamics and handling can also be determined to a high level of confidence. In developing the vehicle's dimensions for a parametric model it is recommended that a vehicle is built up using an 'inside-out' approach centered on effective knowledge-based occupant packaging. This work develops a continuum of the dimensional parameters which tie the vehicle's internal and external dimensions together; it employs a combination of industry standard dimensions and component dimensions defined by the present authors, which make up the outside dimensions of the overall vehicle. In order to develop and optimize models for a desired vehicle type and size class, a knowledge base of typical values for the key dimensional parameters of a vehicle was compiled using a combination of data sources and field measurements. These values provide a useful starting point for the vehicle design and optimization process. They also increase optimization effectiveness, reducing the likelihood of local minima and maxima, and ensure that optimization begins within a valid design space.
机译：参数化车辆建模允许在概念设计阶段快速迭代和优化车辆。可以基于计算机辅助设计在不知道具体细节的情况下对车辆设计的重要部分进行参数优化。车辆的许多总体特征，例如路缘质量，重心位置，关键尺寸，乘员包装和货物体积，都可以在参数级别上进行评估和改进。车辆的目标，例如0-60英里/小时的加速时间，停车距离，燃油经济性，低速转弯半径以及车辆动力学和操控性等方面也可以确定为高度可信。在为参数模型开发车辆尺寸时，建议使用以有效的基于知识的乘员包装为中心的“由内而外”的方法来制造车辆。这项工作开发了一系列尺寸参数，这些尺寸参数将车辆的内部和外部尺寸联系在一起。它采用了本作者定义的行业标准尺寸和组件尺寸的组合，构成了整车的外部尺寸。为了开发和优化用于所需车辆类型和尺寸类别的模型，使用数据源和现场测量值的组合来编译车辆关键尺寸参数的典型值知识库。这些值为车辆设计和优化过程提供了有用的起点。它们还提高了优化效率，减少了局部最小值和最大值的可能性，并确保优化在有效的设计空间内开始。

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