Research of breakage of the chestnut tree branch on the planting of university campus is provided. Collapse is caused by a severe accidental wind gust. Due to collapse in the student environment, the investigation has additional methodical value for the teaching of FEA simulation. The model includes roots, trunk, branch, and conditional crown, where the trunk-branch junction is steady enough. The load-bearing system of tree is taken as an example of an effective bionic design. The branch has grown with the implementation of the idea of “equal-strength console”—the change of sections along the branch provides constant stress level and near uniform dispensation of their without stress concentrators. Static simulation of the tree loading is provided both in the linear formulation and in the geometrically nonlinear one. It is proved that in the trunk-branch junction area the stresses are twice lower than the branch itself, and it is not the place for fracture. For the given wind pressure, the work stress in the branch has exceeded twice the allowable level under bending with some torsion. In such construction (of the tree), the breakage could happen even in the perfect branch condition due to her severe overloading.

中文翻译：

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大学校园种植中生物力学结构超载的有限元模拟

提供了大学校园种植中板栗树枝断裂的研究。崩溃是由严重的意外阵风引起的。由于学生环境的崩溃，这项研究对于有限元分析的教学具有附加的方法性价值。该模型包括根，主干，分支和条件冠，其中主干-分支交界处足够稳定。以树木的承重系统为例，它是一种有效的仿生设计。分支随着“等强度控制台”概念的实施而增长—沿分支的截面变化提供了恒定的应力水平，并且没有应力集中器的情况下其分布几乎均匀。在线性公式和几何非线性公式中都提供了树负载的静态模拟。事实证明，在主干-分支交界处，应力比分支本身低两倍，并且它不是断裂的地方。对于给定的风压，在弯曲的情况下，分支中的工作应力已超过允许水平的两倍。在这种（树的）构造中，由于她的严重过载，即使在完美的分支条件下也可能发生破损。