The structure–mechanical relationship of palm vascular tissue

摘要: Abstract The structure–mechanical relationship of palm sheath is studied with numerical and experimental methods. cellular structure the vascular tissue rebuilt an image-based reconstruction method used to create finite element models. validity models firstly verified results from tensile tests. Then, cell walls inside each specific regions (fiber cap, vessel, xylem, etc.) are randomly removed obtain virtually imperfect structures. By comparing magnitudes performance degradation in different structures, influences region on overall mechanical performances discussed. longitudinal stiffness yield strength sensitive defects vessel regions. While transverse directions (including radial tangential directions), parenchymatous determines properties tissue. Moreover, hydraulic, dynamic response energy absorption behavior numerically explored. flexibility natural enhances its impact resistance. Under quasi-static compression, connecting fiber cap dissipate more energy. dominant role plastic dissipation under high-speed observed. And radially-arranged also allows improve hydraulic pressure.