﻿ 一种启闭绞车的静力学仿真分析

# 一种启闭绞车的静力学仿真分析Statics Simulation Analysis of a Type Hoist Winch

Abstract: A type hoist is made up of a frame, a drum and a drive device. In order to analyze the statics per-formance of the hoist winch, working conditions of the hoist winch are combed and two typical critical working conditions are summed up in this article. Finite Element Method (FEM) is used to analyze the hoist winch strength and stiffness. The results showed that the hoist winch structure strength and static stiffness meet the requirement. The analysis method in this article is of refer-ence value to winch calculation in a certain extent.

1. 引言

2. 工况分析

3. 结构有限元分析

3.1. 材料定义

3.2. 计算模型离散化

3.3. 约束和载荷

Table 1. Two typical working conditions

Figure 1. Finite Element Model of hoist winch

Figure 2. FEM Meshing of hoist winch

$\sigma =\frac{2{T}_{\mathrm{max}}\mathrm{exp}\left(-\mu \theta \right)}{Dt} =4.460\mathrm{exp}\left(-\mu \theta \right)$ (1)

$f=2T\cdot \mathrm{exp}\left(-\mu \theta \right)\mu /D=34.878\mathrm{exp}\left(-\mu \theta \right)$ (2)

μ为钢丝绳与卷筒之间摩擦系数，为0.115；为钢丝绳各点的旋转角度加载时选用柱坐标系，坐标轴y向表示θ角。加载如图3所示 [3] [4] 。

3.4. 有限元计算

$\left[K\right]\left\{\sigma \right\}=\left[F\right]$ (3)

$\left\{\sigma \right\}$ ——节点位移列阵；

$\left[F\right]$ ——节点载荷列阵。

(4)

(5)

4. 计算结果及分析

4.1. 绞车强度分析

Figure 3. Loading sketch of assembling for frame and drum

Figure 4. Overall stress nephogram

Figure 5. Drum stress nephogram

Figure 6. Frame stress nephogram

2种工况下绞车的强度和刚度均满足要求。计算结果汇总如表2所示。

4.2. 绞车变形分析

Table 2. Finite Element analysis results

Figure 7. Drum deformation nephogram under working conditions 1

Figure 8. Drum deformation nephogram under working conditions 2

5. 结论

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