【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。更多还原

【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.更多还原