分析了正交叠层机织布整体穿刺工艺机织布与钢针的相互作用，提出并建立了纤维的弯曲伸长及伸长断裂模式，讨论了影响纤维弯曲伸长的结构参数。通过理论分析和试验结果说明，绕针弯曲伸长断裂是Z向钢针直径和Z向距比值X的函数，为减少整体穿刺的纤维伸长断裂应选取较小的X比值。

The paper analyzes the interaction between woven fabric and needle in the integrated piercing process of orthogonal laminated woven fabrics, proposes and establishes fiber bending elongation and elongation breakage model, and talks over the structure parameters influencing fiber bending elongation. Through theory analysis and testing result analysis, the paper indicates that breakage caused by bending and elongation around needles is a function of the ratio X between diameter of needle in Z direction and needles distance in Z direction, and suggests that smaller X value be chosen in order to reduce fiber elongation breakage of the integrated piercing.