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首页> 外文期刊>Journal of aerospace engineering >Investigation on the Effect of Spring-In Distortion on Strength of a Bimaterial Beam
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Investigation on the Effect of Spring-In Distortion on Strength of a Bimaterial Beam

机译：弹簧变形对双材料梁强度影响的研究

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摘要

The relatively low fabrication precision of CFRP (carbon fiber-reinforced plastics) is an obstacle to the bimaterial specimens' repeatability and reproducibility. A solution could be found by fabricating certain metallic specimens to fit the CFRP in order to obtain the exact experimental states of the bimaterial beam and accomplish the repeatability and reproducibility of the composite tests. The paper investigates the effect of spring-in distortion on a bimaterial beam's ultimate tensile strength by the designed experiments. Typical assembling process of the bimaterial beam containing spring-in distortion is analyzed. Bimaterial specimens are designed to represent the typical spring-in distortion. Tension tests are carried out based on available standards to determine the CFRP's behaviors in the numerical model. Correlation analysis between the real assembling state and the experimental assembling state is conducted in detail. Based on the verified numerical model of the experimental bimaterial beam, the numerical model of the real bimaterial beam is constructed. The effect of spring-in distortion on a bimaterial beam's ultimate tensile strength is obtained. The reported work presents a solution of fabricating certain metallic specimens to obtain the exact states of the bimaterial beam containing spring-in distortion. It will enhance the understanding of the composite components' assembly and help to systematically improve the composites' assembling efficiency in the civil aircraft industry. (C) 2015 American Society of Civil Engineers.
机译：CFRP（碳纤维增强塑料）的制造精度相对较低，这是双材料样品可重复性和可重复性的障碍。通过制造某些适合CFRP的金属试样可以找到解决方案，以获得双材料梁的精确实验状态并实现复合测试的可重复性和可重复性。本文通过设计实验研究了弹性变形对双材料梁极限抗拉强度的影响。分析了包含弹性变形的双材料梁的典型组装过程。双材料样本旨在代表典型的弹入变形。根据可用的标准进行拉伸测试，以确定数值模型中CFRP的行为。详细地进行了实际组装状态与实验组装状态之间的相关性分析。在验证的双材料梁实验数值模型的基础上，构建了实际双材料梁的数值模型。获得了弹性变形对双材料梁的极限抗拉强度的影响。报道的工作提出了一种制造某些金属试样的解决方案，以获得包含弹性变形的双材料梁的精确状态。它将增强对复合材料组件组装的理解，并有助于系统地提高民用飞机行业中复合材料的组装效率。 （C）2015年美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2016年第3期|04015069.1-04015069.8|共8页
  • 作者

    Wang Hua;

  • 作者单位

    Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Mfg Thin Walled Struct, Shanghai 200240, Peoples R China|Shanghai Jiao Tong Univ, Sch Mech Engn, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Civil aircraft; Assembly; Bimaterial beam; Spring-in distortion;

    机译：民用飞机;装配;双材料梁;弹入变形;

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