[Image] Traditional continuous fiber reinforced composites (CFRCs) have long been limited in their impact resistance along the Z-axis, and additive manufacturing technology struggles to accurately replicate complex biological structures. In nature, the mantis shrimp’s dactyl club, with its unique sinusoidal fiber arrangement and gradient modulus distribution, exhibits impact strength far exceeding that of artificial materials. However, existing research often focuses on simplified unidirectional sinusoidal structures, neglecting the core value of amplitude gradient variations, and the main…