Biomechanical Engineering of Textiles and Clothing by Yan Li, D X-Q Dai

By Yan Li, D X-Q Dai

Biomechanical engineering permits wearers to accomplish the top point of convenience, healthy and interplay from their garments because it is designed with the mechanics of the physique in brain. this permits items to be constructed which are in particular designed for the mechanics in their finish function (e.g. activities bra) in addition to the standard stream of the physique. this is often the 1st e-book to systematically describe the suggestions of biomechanical engineering rules, tools, computing device simulation, measurements and functions. Biomechanical engineering of textiles and garments addresses problems with designing and generating textiles and garments for max interplay and phone with the physique. It covers the basic theories, ideas and versions at the back of layout and engineering for the human body's biomechanics, touch difficulties coming up among textiles/clothing and the physique and the mechanics of fibres, yarns, textiles and garments. fabric homes are mentioned with regards to mechanical functionality. it's also insurance of the garments Biomechanical Engineering method built on the Hong Kong Polytechnic college and its linked types and databases. The publication concludes with useful examples of garments functions to demonstrate easy methods to perform biomechanical engineering layout for particular functions.

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Here, EC, E1 and E2 denote the Young’s moduli of the fiber, and the two components respectively. 11(b) show the isostress model, which has the same structure as the isostrain model but is subjected to a stress normal to the fiber direction. In this case, the behavior of the composite system is given by taking the weighted-mean strain with the same stress on each component. 11 Structural models of fiber. s s (c) Micellar model Fiber mechanics 31 where ⊥ indicates that the modulus is measured normal to the axial direction.

Carnaby21 modified van Wyk’s equation by replacing the bulk volume V by the compressible volume Vc, that is Vc = V − Vm, where Vm is the volume of the fiber mass. A better fit to the experimental data could then be obtained. Stearn22 modified van Wyk’s approach by taking into account the change in fiber orientation during compression of the fiber mass. Komori and Makishima23 made the fiber mass compression problem more general by introducing the fiber orientation function. Lee and Lee24 derived the initial compressional behavior of fiber mass in terms of the packing density and a direction density function of the constituent fibers.

Textile fibers are either staple or filament length. Staple fibers range from 2 to 46 cm; filament fibers are of infinite length. All natural fibers except silk are of staple length. Silk and manufactured fibers may be staple or filament fibers. Fiber crimp Crimp refers to waves, bends, twists or curls along the fiber length. It is expressed as crimps per unit length. Some natural fibers are linear, others form two-dimensional or three-dimensional crimps as shown in Fig. 2. Crimped fibers tend to have higher elongation than linear fibers.

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