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arXiv 2009.02037cond-mat.soft
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手征杆轴向和转动耦合增长的屈曲

Buckling of chiral rods due to coupled axial and rotational growth

Satya Prakash Pradhan, Prashant Saxena

摘要:

我们提出了一个特殊的Cosserat杆,允许诱导旋转的横截面的增长模型。生长定律考虑两个控制,一个用于纵向生长,另一个用于旋转。这是探索更详细的直杆与螺旋和各向异性材料的对称性,通过引入一个对称性保持增长占微观结构。具有手性微结构的引导引导杆的例子被认为是研究其变形由于增长。我们发现在这样的杆生长诱导的平面外屈曲的发生。

英文摘要:

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 other for rotations. This is explored in greater detail for straight rods with helical and hemitropic material symmetries by introduction of a 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.

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