№4 (51), 2019. ТECHNOLOGY OF MACHINE BUILDING

A.N. Muranov, I.A. Alexandrov

Sensitivity of dimensionally stable composite laminates CLTE to the deviations of reinforcement angles

The design features of multilayer composite plates with biaxial thermal stability (with a minimum coefficient of linear thermal expansion) are considered. A typical medium-modular CFRP with a reinforcement structure [+45/–45] was investigated in the framework of the classical theory of laminated plates. It is shown that the well-known solution with angles [+45/–45], providing biaxial thermal stability, is high sensitivity to deviations of the angle of reinforcement, which inevitably arise in real technological processes.

Keywords: composite material, laminate, coefficient of linear thermal expansion, dimension thermostability, solution instability.

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