基于有限元关键节点的大叶杨枝条运动的模拟

Computer Animation of Swaying Branch Based on Finite Element

为了真实模拟阔叶树在风中运动情况,重点研究了大叶杨枝条受风场作用。因为枝条是运动的主体。首先提出了关键节点的方法处理枝条。然后对节点段进行有限元建模和受力分析。给出并简化了梁元刚度矩阵。利用节点位移数据库,真实模拟枝条在风场中的运动姿态。

To realistically simulate the broad-leaved tree swaying in wind, the research of wind field in the branches is focused on, because the branch is the body of movement. Firstly the key node method for processing branch was put forward. Then the node finite element modeling and stress analysis given, and the beam element stiffness matrix simplified. Using key nodal displacement database, it is very easy to simulated the motion of bran- ches in the wind.