Strength of Materials

, Volume 22, Issue 2, pp 301–307 | Cite as

Deformation of composite beams under transverse impact loading

  • S. I. Snisarenko
Production Section


Results of experiments on determining the contact force with transverse impact on carbon-filled plastic beams are presented. The problem of transverse impact on beams is stated and solved based on the finite-element method using the Timoshenko shear theory. The Runge-Kutta-Felberg method is used for integrating the main equation of the finite-element method. Analysis of the results of experiments and calculations shows that the form, magnitude, and duration of the contact force of impact depend on elastic and strength characteristics of the contact surface and are determined by the spectrum of natural frequencies of vibrations. Maximum nonsteady deformations in bending and shear are realized for beams, the first natural frequencies of which are comparable with the impact pulse duration. The existence of time-intermediate peaks of nonsteady bending and shear deformations in various sections of the beam, as well as span-intermediate maxima of bending and shear deformations, makes it possible to state and solve the problem of optimizing the structure and form of composite beams in relation to the external nonsteady action.


Pulse Duration Contact Surface Contact Force Shear Deformation Strength Characteristic 
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Copyright information

© Plenum Publishing Corporation 1990

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  • S. I. Snisarenko

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