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Elastic Buckling Strength of Restrained Orthotropic Web Plates

机译：正交异性约束腹板的弹性屈曲强度

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摘要

In this paper, the buckling behavior of elastically restrained orthotropic web plates is investigated. In general, the pultruded FRP structural member is composed of flat plate elements and each plate element is elastically restrained against rotation by adjacent plate components. For finding the local buckling strength of composite flexural member considering the elastic restraint at the juncture of plate components, the orthotropic web plate is modeled as an elastically restrained orthotropic plate under linearly distributed in-plane forces. For the derivation of buckling equation, the power series solution technique is employed. For the plate having different mechanical properties, the parametric studies are conducted by varying the degree of restraint along the longitudinal edge under compression. By using the results obtained, simplified form of equation is also developed so that the practicing engineers can evaluate the buckling stress of such a plate for the preliminary design of FRP flexural members.
机译：本文研究了弹性约束正交异性腹板的屈曲行为。通常，拉挤的FRP结构构件由平板元件组成，并且每个板元件被相邻的板元件弹性地限制旋转。为了在考虑板构件交接处的弹性约束的情况下找到复合挠曲构件的局部屈曲强度，将正交异性腹板建模为线性约束平面内力作用下的弹性约束正交异性板。为了推导屈曲方程，采用了幂级数解技术。对于具有不同机械性能的钢板，可通过改变压缩状态下沿纵向边缘的约束程度来进行参数研究。通过使用获得的结果，还开发了简化的方程式，以便实践工程师可以评估这种板的屈曲应力，以进行FRP挠性构件的初步设计。

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