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Dynamic analysis of open cracked laminated composite beams

机译:开裂层合复合梁的动力分析

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摘要

Composite beams of various orientations with fiber reinforced plastics find increasing application in structures nowadays, for their light weight, high strength and stiffness, and high damping characteristics. Determination of the dynamic characteristics of cracked laminated composite beams (CLCB) is essential not only in the design stage but also in the performance of the structure system, since the presence of cracks, with various types of fiber orientation, and boundary fixations of the beams has a dominant effect on the dynamic nature of the system. In the present paper, the dynamic characteristics laminated composite beams (LCB) with various fiber orientations and different boundary fixations have been presented and discussed in the absence and presence of cracks. A mathematical model is developed, and experimental analysis is utilized to study the effects of different crack depths and locations, boundary conditions, and various code numbers of laminates on the dynamic characteristics of CLCB. The analysis shows good agreement between experimental and theoretical results.
机译:如今,具有不同方向的纤维增强塑料复合梁因其轻巧,高强度和刚度以及高阻尼特性而在结构中得到越来越多的应用。确定开裂的层压复合梁(CLCB)的动力特性不仅在设计阶段,而且在结构系统的性能中都是至关重要的,因为存在裂缝,各种类型的纤维取向以及梁的边界固定对系统的动态特性起主要作用。在本文中,在不存在和存在裂缝的情况下,已经提出并讨论了具有各种纤维取向和不同边界固定的动态特性的层压复合梁(LCB)。建立了数学模型,并利用实验分析研究了不同裂纹深度和位置,边界条件以及层压板的各种代号对CLCB动力学特性的影响。分析表明,实验结果与理论结果吻合良好。

著录项

  • 来源
    《Composite Structures》 |1995年第4期|p.3-11|共9页
  • 作者

    S. M. Ghoneam;

  • 作者单位

    Department of Production Engineering & Mechanical Design, Faculty of Engineering, Menoufia University, Shebin-El-Kom, Egypt;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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