25—ANALYSIS OF THE DRY-RELAXED KNITTED-LOOP CONFIGURATION: PART II: THREE-DIMENSIONAL ANALYSIS

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Abstract
The two-dimensional analysis of the dry-relaxed knitted loop given in Part I of this series is extended to three dimensions by considering the couples acting on the loop at the points of interlocking. The fabric dimensional parameters and the knitted-fabric cover are evaluated for the three-dimensional structure, and the conditions of jamming are investigated. The distribution of curvature and torsion along the loop indicates that very high torsional strains are induced in the arms of the loop. The order of magnitude of the applied forces and couples is evaluated, and the energy of the loop is obtained as a function of G/B, the ratio of the torsional rigidity of the yarn to its flexural rigidity. The significance of these results is discussed. Finally, there is a critical discussion of the assumptions made throughout the work.

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