Altair > 实例探究 > MES 能源有限元分析：控制汽车内部噪声的解决方案

MES 能源有限元分析：控制汽车内部噪声的解决方案

技术

应用基础设施与中间件 - 中间件、SDK 和库
功能应用 - 制造执行系统 (MES)

适用行业

汽车
化学品

适用功能

产品研发

用例

预测性维护
车辆性能监测

服务

系统集成

关于客户

本案例研究中的客户是密歇根工程服务有限责任公司 (MES)，这是一家专门开发工程模拟商业软件和先进技术的研发公司。 MES 在国防和商业工业领域都有业务。通过其工程服务，MES 促进向客户进行高效的技术过渡。在这个特殊案例中，MES 正在与需要控制由于各种外部来源而在车辆内部产生的空气噪声的汽车公司合作。

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挑战

密歇根工程服务有限责任公司 (MES) 是一家专门从事商业软件和工程模拟先进技术的研发公司，面临着来自汽车公司的挑战。这些公司需要控制由于电机、发动机、变速箱和轮胎等外部来源而在车辆内部产生的空气噪声。目标是以最小的成本和重量损失实现最少的噪音。面临的挑战是，用于模拟高达 8KHz 至 10KHz（空气噪声的典型上限频率）的传统有限元分析 (FEA) 方法要么计算成本昂贵，要么由于建模所需的有限元尺寸较小而不可行车辆在如此高的频率下。

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解决方案

MES 使用能量有限元分析 (EFEA) 开发了一种解决方案。 EFEA 需要模型中较少数量的元素，因为新的主要变量基于结构振动和声场的能量。 EFEA 使用元素库（类似于 FEA）来对任何物理系统进行建模，并使用接头库（类似于统计能量分析中的耦合损耗因子）来表示系统中存在的功率传输机制。可以使用相同的工具（即 Altair HyperMesh™）并遵循与开发 FEA 模型类似的流程来开发 EFEA 模型。由于与 FEA 相比所需的元素少得多，因此可以快速评估替代设计以影响设计。

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运营影响

The implementation of the Energy Finite Element Analysis (EFEA) by MES has yielded successful results. The simulation results have been compared successfully to test data multiple times for production vehicles. This has allowed for the identification of the most effective utilization of treatment. The EFEA model, due to its significantly fewer required elements compared to the conventional Finite Element Analysis (FEA), has enabled rapid evaluation of alternative designs, thereby influencing the design process in a timely manner.

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