Process-induced shape distortion is generated in curved composite parts. In the accompanying paper, the authors developed a fiber-optic monitoring method and confirmed that chemical cure shrinkage induces through-thickness shear deformation, which is the key deformation affecting final shape. The present paper first investigated the effects of thickness, flange length, and shape on internal states and process-induced deformation. Shear deformation was suppressed as the part thickness decreased and the flange length increased, resulting in larger spring-in. The shape effect was evaluated by comparing L- and U-shaped components. Larger warpage and spring-in were generated in the U-shaped part, indiacting that deformation in a U-shaped part is not a simple superposition of two L-shaped parts. Finally, a curved ply drop-off structure was investigated as a practical example. Internal strain was uniform in parts of different thickness, whereas residual deformation was non-uniform in the longitudinal direction due to mechanical coupling between the two parts.

在弯曲的复合零件中会产生过程引起的形状变形。在随附的论文中，作者开发了一种光纤监测方法，并证实了化学固化收缩会引起贯穿厚度的剪切变形，这是影响最终形状的关键变形。本文首先研究了厚度，凸缘长度和形状对内部状态和过程引起的变形的影响。随着零件厚度的减小和凸缘长度的增加，剪切变形得到了抑制，从而导致较大的弹入。通过比较L形和U形分量来评估形状效果。U形部件中会产生较大的翘曲和弹入，这表明U形部件中的变形不是两个L形部件的简单叠加。最后，研究了弯曲的帘布层脱落结构作为实例。在不同厚度的零件中，内部应变是均匀的，而由于两个零件之间的机械耦合，残余变形在纵向上是不均匀的。