[1]崔耀东.履带起重机主臂风场流固耦合分析[J].起重运输机械,2021,(17):30-35.
 Analysis of fluid-structure coupling in wind field of main boom of crawler crane[J].,2021,(17):30-35.
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履带起重机主臂风场流固耦合分析()
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《起重运输机械》[ISSN:1001-0785/CN:11-1888/TN]

卷:
期数:
2021年17期
页码:
30-35
栏目:
分析研究
出版日期:
2021-09-30

文章信息/Info

Title:
Analysis of fluid-structure coupling in wind field of main boom of crawler crane
作者:
崔耀东
文献标志码:
A
摘要:
合理简化QUY220型履带起重机桁架臂主臂模型,建立主臂结构的流体风场模型和固体计算模型,选择78.16°变幅和吊载130.6吨工况进行分析,得到了流体风场主臂结构的表面压力和速度。利用Workbench将表面压力、速度等参数传递到固体计算模型中,实现主臂结构的单向流固耦合数值分析,提取位移,应力等参数,研究15.5,28.3,55 m/s的风载荷对主臂的影响。依据理论和起重机设计规范计算主臂表面的风压和流速,将计算结果与CFX模拟的结果进行比较,发现相对误差最大为0.019873,可用此方法来模拟桁架臂主臂不同风速下的风压,进行更准确的桁架臂主臂结构设计。起重机在不大于28.3 m/s风速下作业,由风速引起的位移占比较小,偏于安全。非工作状态下,随着风速增高由风速引起的位移在总位移中占比提升较快。风速引起的倾覆力矩逐渐增大。在设计桁架臂主臂时应该考虑顺风向风载荷对整机倾覆的影响以及横风向对主臂稳定性的影响。
Abstract:
Reasonably simplify the main boom model of the QUY220 crawler crane truss boom, establish the fluid wind field model the solid calculation model of the main boom structure, the 78.16° luffing the lifting load of 130.6 tons for analysis, obtain the main boom structure of the fluid wind field Surface pressure speed. Use Workbench to transfer surface pressure, velocity other parameters to the solid calculation model, realize the one-way fluid-solid coupling numerical analysis of the main boom structure, extract the displacement, stress other parameters, study the impact of wind loads of 15.5, 28.3, 55 m/s on the main body The influence of the arm. Calculate the wind pressure flow velocity on the main boom surface according to the theory crane design specifications, compare the calculation results with the CFX simulation results, find that the maximum relative error is 0.019873. This method can be used to simulate the wind pressure on the main boom of the truss boom at different wind speeds. Carry out more accurate truss boom main boom structure design. The crane operates at a wind speed not greater than 28.3 m/s, the displacement caused by the wind speed is relatively small, which is safe. In the non-working state, as the wind speed increases, the proportion of the displacement caused by the wind speed in the total displacement increases rapidly. The overturning moment caused by wind speed gradually increases. When designing the main boom of the truss boom, the influence of the downwind wind load on the overturning of the whole machine the influence of the cross wind direction on the stability of the main boom should be considered.
更新日期/Last Update: 2021-10-27
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