The mechanical properties of jujube branches are the basis of designing and optimising the working parameters of pruning operations and branch crushing machinery. The mechanical properties of the cell wall of jujube branches were measured using a nanoindentation technique, and the representative volume element for characterising the microstructure of a jujube branch was established using a computed tomography (CT) X-ray technique. In addition, the macro equivalent mechanical properties of jujube branches were predicted using finite element analysis of the representative volume elements. The accuracy of the finite element simulation results was verified through a macro test. The results show that the estimated mechanical properties of jujube branches obtained by using the representative volume element were slightly higher than those obtained by the macroscopic methods but the prediction errors were

中文翻译：

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枣枝的显微结构和生物力学表征

枣树枝的力学性能是设计和优化修剪作业和树枝粉碎机械工作参数的基础。使用纳米压痕技术测量枣树枝细胞壁的机械性能，并使用计算机断层扫描 (CT) X 射线技术建立表征枣树枝微观结构的代表性体积元素。此外，使用代表性体积元素的有限元分析预测了枣树枝的宏观等效力学性能。通过宏观试验验证了有限元仿真结果的准确性。