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The influence of waviness λ0 and orientation angle θ on the statistical average microscopic stretch of the fibers. (a) The microscopic stretch of matrix phase (solid line) and collagen fibers (symbols) with waviness λ0 = 1.5, 1.6, 1.7 and 1.8, and orientation angle θ= 0°, while the uniform-field prediction (dashed line) is independent of the waviness; (b) The microscopic stretch of collagen fibers with orientation angle θ= 0°, 10° and 20°, and waviness λ0 =1.6.
