Zhu H X, Melrose J R
Polymer and Colloids Group, Cavendish Laboratory, Cambridge University, Madingley Road, Cambridge, CB3 0HE, UK.
J Theor Biol. 2003 Mar 7;221(1):89-101. doi: 10.1006/jtbi.2003.3173.
The mechanics analysis of plant or vegetable tissue under a compressive stress has been developed based on large deformation elasticity theory. The tissue was treated as a lattice of regular perfect three-dimensional hexagonal cells. The cell walls were assumed to be impermeable under the time-scale of the loading. The cell walls of plants and vegetables are polymeric composite materials, consisting of a relatively amorphous matrix and a highly structured network of microfibrils embedded in the cell wall matrix. The micromechanical features of the individual cells have been related to the macroscopic properties of the whole tissue. The effects of microfibrillar stiffening factors k(1) and k(2), the cell wall matrix property alpha and the initial cell expansion ratio nu(i) on the compressive behaviour of a plant or vegetable tissue have been investigated. The predicted results have also been related to some experimental evidence.
基于大变形弹性理论，对植物或蔬菜组织在压缩应力下的力学分析已经展开。该组织被视为由规则完美的三维六边形细胞组成的晶格结构。在加载的时间尺度下，细胞壁被假定为不可渗透。植物和蔬菜的细胞壁是聚合物复合材料，由相对无定形的基质和嵌入细胞壁基质中的高度结构化微纤丝网络组成。单个细胞的微观力学特征与整个组织的宏观性质相关。研究了微纤丝增强因子k(1)和k(2)、细胞壁基质性质α以及初始细胞膨胀率ν(i)对植物或蔬菜组织压缩行为的影响。预测结果也与一些实验证据相关。
