Zahra Rezaye Soltanabadi - Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
Ali Asghar Asgharian Jeddi - Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
Hadi Dabiryan - Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.

Considering the importance of straight-line model in fabric cells to model their mechanical properties, straight-line models have been developed to fulfill the geometry of plain, rib ۱×۱, and interlock weft knitted fabrics in ۲D and ۳D states. To verify the generated models, these fabrics were produced in three densities. The loop lengths of the produced fabrics were precisely measured and compared with the loop lengths calculated by models. The results showed that the straight-line model is capable of predicting the loop length of these fabrics.

plain weft-knitted fabric, rib ۱×۱, interlock, straight-line model, loop length