Research on compressional behavior of fiber assembly:1.characterization of compression characteristic curves and extraction of eigenvalues

The compressional behavior of five fiber assemblies was investigated,i.e.wool,cashmere,acrylic,goose down and kapok.Through one-way compressing the fibers,the compression characteristic curves were characterized and the eigenvalues were extracted.There were evident differences for the compressive curves,compressing stress and strain curves,modulus curves of five fiber assemblies.This is attributed to the fiber morphological structures.The compression process could be divided into three areas: linear area,transition area(or slipping area) and linear strengthening area for modulus.