This paper reports the development of an improved particle model to simulate cloth mechanical behavior. A particle model of square meshes, which is close to the orthotropic structure of woven fabric, is used to represent the cloth. Besides the separation, bending and shearing springs, a twist spring is added to the particle model to simulate the tension/compression, bending, shearing and twisting behavior of fabric. Moreover, the stress-strain relationships of various types of deformations are redefined according to fundamental mechanical models. Experiments of the heart-loop test are carried out to illustrate the problems in the old model and then to validate the improved model. The comparisons between the heart-loops generated by the improved model and the corresponding actual experimental results verify that the model is capable of simulating cloth mechanical behavior with satisfactory accuracy. The anisotropy of woven fabric is shown by different heart-loops formed by the specimens of different directions, and furthermore is illustrated by the distributions of various inner stresses.
By: Xiaoqun Dai, Yi. Li and Xin Zhang Institute of Textiles and Clothing, Hong Kong Polytechnic Univer
Submit Date: 6/7/2010 18:00