> For the complete documentation index, see [llms.txt](https://manual-1-3.karamba3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual-1-3.karamba3d.com/chinese_1_3_3/3-in-depth-component-reference/3.3-cross-section/3.3.5-beam-joint-agent.md).

# 3.3.5: 梁-连接件 (Beam-Joint Agent) 🔷

![图3.3.5.1：使用“（梁-连接件）”运算器基于几何关系定义铰链的三种不同但等效的可能性](/files/-M9XuSuAhaxXmuCDW_WP)

**“Beam-Joint Agent（梁-连接件）”**根据几何关系在梁上创建铰链。图3.37显示了定义连接件的三种不同但等效的可能性。通过在**“AtElemsIds（元素标识符）”**输入端口处提供元素标识符列表可以设置连接件的元素或元素组的位置。构建模型后，如满足以下条件之一，梁连接件就会在模型中运行并放置铰链：

* 元素标识符上的节点连接到其标识符在**“ToElemIds（至元素标识符）”**输入中列出的元素。
* 元素标识符上的节点连接到**“ToNodeInd（至节点标识符）”**输入中列出的具有编号的节点。
* 元素标识符上的节点位于**“ToGeom（至几何项）”**中提供的其中一个几何项目上。可以是点、曲线、平面、边界表示或是网格。两个在空间中接触的几何项的公差由模型中的**“LDist（极限距离）”**来定义（请参见[3.1.1](/chinese_1_3_3/3-in-depth-component-reference/3.1-model/3.1.1-assemble-model.md)）。

这意味着**“Ct”**、**“Cr”**和**“Dofs”**的含义与第[3.3.6](/chinese_1_3_3/3-in-depth-component-reference/3.3-cross-section/3.3.6-beam-joints.md)节中介绍的**“Beam-Joints（梁-连接）”**运算器中的含义相似。


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# Agent Instructions
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