This paper is devoted to modeling the properties of composite materials and reinforced composite beams. Mathematical relations describing the nonlinear elastic three-point bending of isotropic and reinforced beams with account of different strength and stiffness behavior in tension and compression are obtained. An algorithm for numerical solution of corresponding boundary-value problems is proposed and implemented. Results of numerical analysis were compared to acquired data for polymer matrix and structural carbon fiber reinforced plastics.
The paper presents the results of a study on the breakdown by a free-falling load of composite materials with an ice matrix and various fillers. Samples from materials reinforced with sawdust, cellulose materials, basalt roving and needle-punched materials from cottonine and basalt were studied. The dependence of the nature of the destruction of ICM on the type of reinforcing materials in the ice matrix is revealed. The materials with the best indicators of impact resistance are determined.
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