Published: Jan. 1, 2024

Existing buckling and vibration analyses calculation formulae in the literature for composite columns/beams with partial interaction imperfection at their layers' interfaces are restricted to a limited number of constituting layers. The present study employs an Euler- Timoshenko/Engesser-hypothesis-based model formulate stability problems composed any layers, incorporating effect interfacial-bonding imperfection. As result, practical conversion coefficient is introduced terms some dimensionless group parameters, converting well-known classical Euler formula critical loads that multi-layer columns, interlayer bonding effects. A similar also introduced, enhancing Euler-Bernoulli beams N partially-interacting coefficients general nature developed "effective length" capture different end conditions. Next, established develop governing differential equations boundary conditions flexible shear deformable beams/columns included interfacial form interaction. Consequently, simple turning mentioned Euler-based imperfect into those based on Timoshenko/Engesser model. Comparative numerical results conducted discussed.

Language: Английский