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首页> 外文会议>Proceedings of the 1999 ASME design engineering technical conferences >Possible advantage of nonlinear over linear analyses for design
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Possible advantage of nonlinear over linear analyses for design

机译：非线性分析优于线性分析的设计优势

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Many metal stress-strain curves show "tiny" difference between linear approximationand real curves around yield strength. But actually it can be very large. It could produce smaller or much smaller stress when the real curves are applied in nonlinear stress analysis, comparing to linear one. The output difference is larger when product (e.g. plate) deflection is comparable to its thickness or bigger. The theoretical curves based on minimum guaranteed strength and elongation seem to be able to provide conservative design for both stress and deflection control, if they can accurately represent the real curves. Application of nonlinear analysis might have significant impact on product competitiveness. A lot more research is needed beyond this introductory report, including physical tests, to further explore the possibility and develop the methodology if possible, before any actual application for real product design can be started.
机译：许多金属应力-应变曲线显示线性近似与屈服强度附近的真实曲线之间存在“微小”差异。但是实际上它可能很大。与线性曲线相比，当将实际曲线应用于非线性应力分析时，它可能会产生较小或较小的应力。当产品（例如板）的挠度等于或大于其厚度时，输出差异会更大。如果能够精确表示真实曲线，则基于最小保证强度和伸长率的理论曲线似乎能够为应力和挠度控制提供保守的设计。非线性分析的应用可能会对产品竞争力产生重大影响。在此介绍性报告之外，还需要进行更多的研究，包括物理测试，以进一步探索可能性，并在可能的情况下开发方法，然后才可以开始实际产品设计的任何实际应用。

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