AN EFFECT OF A VOLUME FRACTION AND COMPONENTS ARRANGEMENT IN A COMPOSITE MATERIAL ON THE FORCE APPLIED IN COMPRESSION TEST

摘要

Theoretical assessment and experimental determination of forces used informing composite materials with different volume fraction and various geometrical arrangement of components in the input material subjected to compression test have been made. Results of physical modelling of an upsetting process using model materials (modelling paste) and metals (Pb1 lead and A0 aluminium) have been presented. The samples under test had concentric arrangement of layers (hard core-soft coating) or a parallel arrangement (hard inner layers - soft outer layers). Comparison of upsetting forces determined analytically and experimentally for the complex materials was carried out. It has been proved that in the formulas describing the force used in the process of forming materials characterised by different properties it is necessary to take into account volume fraction and arrangement of components of a composite material.