We present a growth model for special Cosserat rods that allows for induced rotation of cross-sections. The growth law considers two controls, one for lengthwise growth and another for rotations. This is explored in greater detail for straight rods with helical and hemitropic material symmetries by introduction of symmetry-preserving growth to account for the microstructure. The example of a guided-guided rod possessing a chiral microstructure is considered to study its deformation due to growth. We show the occurrence of growth-induced out-of-plane buckling in such rods.

中文翻译：

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手性杆的屈曲归因于轴向和旋转的耦合增长

我们提出了一种特殊的Cosserat杆的生长模型，该模型允许引起横截面的旋转。增长定律考虑两个控制，一个控制纵向增长，另一个控制轮换。对于具有螺旋形和半球形材料对称性的直杆，通过引入保持对称性的生长来解决微观结构，对此进行了更详细的探讨。具有手性微观结构的导向杆的例子被认为是研究由于生长引起的变形的例子。我们显示在这种杆中出现了增长引起的面外屈曲。