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首页> 外文会议>ASME international design engineering technical conferences and computers and information in engineering conference 2011.;vol. 2 pt. A. >APPLICATION OF THE COMPLEX VARIABLE SEMI-ANALYTIC METHOD TO THE INVERSE DETERMINATION OF UNKNOWN MATERIAL PROPERTIES
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APPLICATION OF THE COMPLEX VARIABLE SEMI-ANALYTIC METHOD TO THE INVERSE DETERMINATION OF UNKNOWN MATERIAL PROPERTIES

机译：复杂变量半解析法在未知材料特性反演中的应用

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摘要

There are various engineering applications where it is desired to determine material properties. For example, properties are needed in the development of new functional and composite materials, in non-destructive testing for quality control in manufacturing, and for real-time structural health monitoring. Often it is not possible to measure these properties directly without damaging the samples. However, many properties can be determined inversely using measurements of the sample response to a loading of some type. In this paper, we demonstrate the inverse determination of spatially varying material properties using simulated measurements, finite element modeling, and numerical optimization methods. We consider problems in both heat conduction and linear elasticity. We consider cases where measurements on the interior and boundary are used. The accuracy and efficiency of the inversely determined solution is improved by using accurate sensitivity information provided by the Complex Variable Semi-Analytic Method. The sensitivities also give guidance as to where measurements should be taken on the structure to obtain accurate estimations of the material properties.
机译：需要确定材料特性的各种工程应用。例如，在开发新的功能和复合材料，进行无损检测以进行制造中的质量控制以及进行实时结构健康监控时，需要具有特性。通常不可能在不损坏样品的情况下直接测量这些性能。但是，可以使用对某种类型负载的样品响应测量来反过来确定许多属性。在本文中，我们演示了使用模拟测量，有限元建模和数值优化方法对空间变化的材料特性进行逆确定的方法。我们考虑导热和线性弹性方面的问题。我们考虑使用内部和边界测量的情况。通过使用复杂变量半解析方法提供的准确的灵敏度信息，可以提高反求解的准确性和效率。敏感性还为应该在结构上进行哪些测量以获得材料特性的准确估计提供了指导。

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