中文说明：
梁可视为平面应力状态，先按图示尺寸划分为均匀的三角形网格，共有8×10＝80个单元，5×ll＝55个节点，坐标轴以及单元与节点的编号如图。将均布载荷分配到各相应节点上，把有约束的节点5l、52、53、54、55视作固定铰链，建立如图所示的离散化计算模型。
English Description：
The beam can be regarded as a plane stress state. Firstly, it is divided into uniform triangular meshes according to the dimensions shown in the figure, with a total of 8 × 10 = 80 units, 5 × Ll = 55 nodes. The coordinate axis and the number of units and nodes are shown in the figure. The uniformly distributed load is distributed to each corresponding node, the constrained nodes 5L, 52, 53, 54 and 55 are regarded as fixed hinges, and the discrete calculation model shown in the figure is established