Plastic deformation analysis of PVC coated fabric with regular basket weave

To make understanding of the relationship of stress and time during plastic deformation,the single axial tensile creep tests of PVC coated fabric with regular basket weave were performed at warp and weft directions,and the plastic deformation of the specimen were measured after removing the load 1 year.Using multiple functions from the product of both stress difference power function and time power function,the experiment data were studied using multiple regression analysis.It was concluded that the model had better fitting results.At the same time,the instantaneous plastic deformation and delayed plastic deformation in the total plastic deformation were analyzed.It was showed that the instantaneous deformation was the main part of the plastic deformation,while the delayed plastic deformation was a minor one and,the delayed plastic deformation would become smaller and smaller with time.