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OPAX

 
独特的LMS Test.Lab OPAX方法是一种快速、基于工况数据的传递路径分析方法,以一种非常有效和可靠的途径解决振动噪声问题。作为LMS具有突破性进展的解决方案,其精度与常规的TPA方法相当,同时效率可与传统的工况路径分析方法相媲美。然而,工况传递路径方法经常无法准确识别振动根源,找到NVH问题的补救措施。LMS Test.Lab OPAX解决方案则能够清晰分离载荷与传递路径,从而准确洞察振动及声能量从激励源,通过一组结构传播和空气传播的传递路径,最终到达响应位置的整个过程。可以确保工程师花费比以前更少的测试时间来准确地识别问题的根源。
 

OPAX LR 01.jpg独特的LMS Test.Lab OPAX方法是一种快速、基于工况数据的传递路径分析方法,以一种非常有效和可靠的途径解决振动噪声问题。作为LMS具有突破性进展的解决方案,其精度与常规的TPA方法相当,同时效率可与传统的工况路径分析方法相媲美。然而,工况传递路径方法经常无法准确识别振动根源,找到NVH问题的补救措施。LMS Test.Lab OPAX解决方案则能够清晰分离载荷与传递路径,从而准确洞察振动及声能量从激励源,通过一组结构传播和空气传播的传递路径,最终到达响应位置的整个过程。可以确保工程师花费比以前更少的测试时间来准确地识别问题的根源。该解决方案支持稳态和加速或减速等各种工况下的贡献量分析。可以对结构声载荷和空气声载荷同时进行识别,也可以分别进行识别,采用少量附加的参考点可以确保载荷识别的可靠性。

LMS Test.Lab OPAX解决方案有着与其他基于LMS Test.Lab TPA解决方案同样便捷的工作流程。在工程中的每一环节都能给出清楚的用户反馈。其TPA激励源-传递路径-响应的模型可以以非常灵活的方式建立起来,在分析中,不同工况下,不同的数据组能够方便地进行相互比较。工作载荷能够采用单自由度模型或者等带宽模型进行准确识别。用户可以通过将系统的某些真实物理特性添加到模型中,进一步增加数据的可信度。

在整个应用过程中,数据显示的方式会针对具体的数据分析需要自动转换为相应的布局。



特点
  • 便捷的激励源-传递路径-响应建模和数据管理
  • 单自由度和等带宽参数模型的载荷预测
  • 通过附加参考点可以获得更高分析精度,并可对丢失的路径进行补偿
  • 灵活的数据显示布局和贡献量分析(4维显示)

优点
  • 最少的试验,具有最高的精度
  • 易用高效
  • 与实际物理过程相关的模型
  • 增强工程洞察力



    Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges. 

    LMS helps KIA Motors to quickly and efficiently improve its cabin noise levels using

    KIA-Motors LMS OPAX.jpgBecause of its versatility in a wide range of applications, conventional transfer path analysis (TPA) is one of the most widely used methods for studying NVH problems in automotive, aerospace and manufacturing industries. In this approach, the way vibrations and radiated noise travel from source to receiver – through structural connections such as engine mounts, for example, as well as airborne sound reaching passenger ears – is represented with noise transfer functions (NTFs), a precise ratio of output at the receiver to input loads and forces for each vibration path. 


    Next generation Transfer Path Analysis to pinpoint noise and vibration problem sources

    Integral Shaker LR.jpgWhen new products are developed, one of the constraints manufacturers run into is the difficulty to gain a fast understanding of weak points in the design. Extensive development consultancy experience has allowed LMS Engineering Services to develop analysis methods to overcome this constraint. Advances in testing and simulation technology, for example, made it possible to overcome the constraints of Transfer Path Analysis (TPA) method and allowed LMS to create techniques that can be applied throughout the development process.




    手册
    下载 the LMS Test.Lab Transfer Path Analysis 传递路径分析手册

    图片

    OPAX LR 02.jpg OPAX LR 03.jpg OPAX LR 04.jpg
    LMS Test Lab OPAX可同时分析空气和结构贡献量。 通过矢量的贡献量分析,用户能够比较不同路径的相对贡献量。 对每个贡献量结果即时、完整的可视化显示。




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