PREDICTION OF THE REGIMES OF 3D-FORMING OF SHEET CLOTH-REINFORCED THERMOPLASTICS BY THE CHARACTERISTICS OF THE VISCOELASTIC PROPERTIES OF PREPREGS

摘要

It is shown that in the process of the 3D-forming of sheet, fabric-reinforced thermoplastics, the rheological properties of a material at the processing temperature are responsible for t he stressed-deformed state of the product and, consequently, for the quality of the products obtained. Th e prediction of the behavior of a material in a viscous-flowing state makes it possible to o ptimize the structure of the reinforced thermoplastics and the parameters of the process of pressin g to attain the needed deformation characteristics. The methods of determining the parameters of a power flow of the prepreg at the typical kinds of deformation are suggested.