# 螺栓连接计算案例和kisssoft校核 一

#### 1 计算输入

一液压油缸，油压 P=1.6Mpa，D=160mm，壁厚 S=10 mm 求设计上盖的螺栓连接数量和分布直径，如图所示。

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/iUoimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/iUoimage.png)

#### 2 手工螺栓选型

使用工程力学基本原理计算方法步骤如下：

<span style="background-color: rgb(255, 255, 255);">1.</span>计算螺栓工作的载荷 F1，暂取螺栓数量 z=8，则每个螺栓承受的平均轴向工作载荷为

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/T9pimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/T9pimage.png)

2\. 计算螺栓总的拉伸载荷 F，对于压力容器取残余预紧力 F2=1.8\* F1，则

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/hmVimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/hmVimage.png)

3.求螺栓直径。选取螺栓材料性能等级为 4.8 级，取安全系数 n=3，则螺栓的许用应力为

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/hvpimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/hvpimage.png)

按照强度公式计算螺栓的小径

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/8nkimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/8nkimage.png)

查表 M16 螺栓小径 13.835，因此选用螺栓为 M16

4.设计螺栓分布圆直径 D1。以油缸外径，留出 2 倍螺栓六方长度 e 即可。

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/UoKimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/UoKimage.png)

螺栓间距验证，小于 7 倍螺栓直径。

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/elpimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/elpimage.png)

#### 3 Kisssoft 计算校核

#####  3.1 Kisssoft 螺栓连接的计算逻辑

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/0IRimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/0IRimage.png)

#####  3.2 kisssoft 负载选项卡

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/b6oimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/b6oimage.png)

##### 3.3 Kisssoft 螺栓/螺母型号定义

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/FTCimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/FTCimage.png)

##### 3.4 Kisssoft被夹紧零件参数定义

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/X6Cimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/X6Cimage.png)

##### 3.5 Kisssoft 螺栓装配条件定义

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/MSKimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/MSKimage.png)

#### 4 Kisssoft 计算结果和报告

##### 4.1 Kisssoft 计算报告 - 根据最小所需装配预紧力 F<sub>M min</sub>的计算结果：

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/k4Wimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/k4Wimage.png)

##### 4.2 Kisssoft 计算报告 - 根据装配过程中产生的最大预紧力F<sub>M max</sub>的计算结果：

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/diFimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/diFimage.png)

##### 4.3 Kisssoft 计算报告 - 安全系数校核

- 根据装配过程中产生的预紧力F<sub>M max </sub>校核 螺栓的屈服 / 疲劳， 和 被连接表面的接触应力 安全系数
- 根据装配过程中产生的预紧力F<sub>M min </sub>校核 被连接件的滑动安全系数

[![image.png](https://ecar.officesimple.net/uploads/images/gallery/2026-01/scaled-1680-/ZUbimage.png)](https://ecar.officesimple.net/uploads/images/gallery/2026-01/ZUbimage.png)

##### 4.4 Kisssoft 完整校核报告

[kisssoft螺栓计算案例1.M40](https://ecar.officesimple.net/attachments/2)

[kisssoft螺栓计算案例报告 (一).pdf](https://ecar.officesimple.net/attachments/1)