To make a significant contribution to the fundamental understanding of how the internal tissue structure of the Elymus culm is related to the culm stiffness and flexibility with respect to its section height, the present work uses state-of-the-art methods such as three‐-/two-point bending experiments, histological investigations, and numerical optimisation/identification modelling. The combination of these methods generates a knowledge that is needed, to adequately model the degree of bending and associated drag forces in hydrodynamic models used to predict wave loads on landward lying coastal protection structures. In addition, it is possible to predict the likely plant culm stresses that will ultimately lead to plant breakage and removal, and thus to a temporary reduction in coastal protection. The results of this study show that knowledge of the geometric cross sectional information (cross sectional area and area moment of inertia) is indispensable for an adequate description of the mechanical behaviour of the grass culm. Especially the area moment of inertia was often overestimated in previous studies. It also becomes clear that the histological plant characteristics in the form of tissue compositions explain the differences in stiffness and thus in bending behaviour that exist between the different stem sections (bottom, middle, top). The methodology presented here, combining experimental investigations and numerical methods, has the potential to make a significant contribution to the elucidation of plant load transfer and wave-vegetation interaction in the future.

为对Elymus的内部组织结构的基本理解做出重大贡献茎秆的截面高度与茎秆的刚度和柔韧性有关，目前的工作采用了最新的方法，例如三点/两点弯曲实验，组织学研究以及数值优化/识别模型。这些方法的结合产生了必要的知识，以便在流体动力学模型中充分建模弯曲程度和相关的阻力，该流体力学模型用于预测陆上躺着的海岸保护结构上的波浪荷载。此外，有可能预测可能导致最终导致植物破碎和清除并因此导致海岸保护的暂时减少的植物茎秆胁迫。这项研究的结果表明，几何横截面信息（横截面积和惯性矩面积）的知识对于充分描述草的力学行为必不可少。特别是在以前的研究中，区域惯性矩常常被高估。同样清楚的是，组织组成形式的组织学植物特征解释了不同茎段（底部，中间，顶部）之间存在的刚度差异以及弯曲行为差异。这里介绍的方法，结合实验研究和数值方法，有可能为将来阐明植物负荷转移和波浪-植被相互作用做出重大贡献。特别是在以前的研究中，区域惯性矩常常被高估。同样清楚的是，组织组成形式的组织学植物特征解释了不同茎段（底部，中间，顶部）之间存在的刚度差异以及弯曲行为差异。这里介绍的方法，结合实验研究和数值方法，有可能在将来为阐明植物负荷转移和波浪-植被相互作用做出重大贡献。特别是在以前的研究中，区域惯性矩常常被高估。同样清楚的是，组织组成形式的组织学植物特征解释了不同茎段（底部，中间，顶部）之间存在的刚度差异以及弯曲行为差异。这里介绍的方法，结合实验研究和数值方法，有可能在将来为阐明植物负荷转移和波浪-植被相互作用做出重大贡献。中间，顶部）。这里介绍的方法，结合实验研究和数值方法，有可能在将来为阐明植物负荷转移和波浪-植被相互作用做出重大贡献。中间，顶部）。这里介绍的方法，结合实验研究和数值方法，有可能在将来为阐明植物负荷转移和波浪-植被相互作用做出重大贡献。