复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (6): 64-68.

• 基础研究 • 上一篇    下一篇

帽型复合材料梁的稳定性分析与固有频率计算

姜河, 郑波*   

  1. 海军工程大学理学院,武汉 430033
  • 收稿日期:2014-10-28 出版日期:2015-06-28 发布日期:2021-09-13
  • 通讯作者: 郑波(1965-),男,博士,副教授,主要从事计算固体力学等方面的研究。
  • 作者简介:姜河(1990-),男,硕士,主要研究方向为船用复合材料。

STABILITY ANALYSIS AND NATURAL FREQUENCY CALCULATION OF COMPOSITE CAP-BEAM

JIANG He, ZHENG Bo*   

  1. Faculty of Science, Naval University of Engineering, Wuhan 430033, China
  • Received:2014-10-28 Online:2015-06-28 Published:2021-09-13

摘要: 根据经典层合板理论,结合纯弯曲状态下内力与应变的关系,推导了帽型复合材料梁的等效弯曲刚度计算公式,并利用等效弯曲刚度进一步推出了该类型梁的轴向临界载荷与固有频率计算公式,最后用有限元法进行验证,为帽型及其他截面类型的复合材料梁在工程中的应用提供参考。

关键词: 帽型梁, 等效弯曲刚度, 轴向临界载荷, 固有频率

Abstract: According to the Classical Lamination Theory, this paper deduced the effective flexural rigidity of cap-beam with the relationship between the internal force and strain when the beam are under the pure bending state. Then, the effective flexural rigidity was used to deduce the axial critical load and the natural frequency of this beam. Finally, the finite element method was used to verify the formula, providing a reference for the application of the cap-type and other section types of composite beam in engineering.

Key words: cap-beam, effective flexural rigidity, axial critical load, natural frequency

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