| Optimization Design |
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| Optimum design for bearing parts of radiation well horizontal drilling rig based on DOE and finite element simulation |
| SUN Shi-feng1, GAO Chang-qing1, YANG Bo1, XU Zheng-he2 |
1.School of Mechanical Engineering, University of Jinan, Jinan 250022, China
2.School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China |
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Abstract In order to improve the safety and stability of bearing parts of radiation well horizontal drilling rig, the design of experiment (DOE) and finite element simulation technology were used to optimize the bearing parts. Orthogonal test method and ANSYS Workbench finite element statics simulation were used to optimize the layout of reinforcing ribs of the bearing system consisting of rotary platform, vertical bracket and transverse bracket. In this way, the optimal layout of reinforcing ribs for the bearing system was obtained. On this basis, the response surface optimization method based on the DOE was used to optimize the platform thickness, rib height and rib thickness of rotary platform, which further reduced the maximum equivalent stress, maximum deformation and mass of the rotary platform, and improved the safety and stability of the bearing system. The results showed that the optimal layout of reinforing ribs for the bearing system was as follow: the rotary platform used a vertical and horizontal rib, the vertical support used an X-shaped rib, and the horizontal support used a V-shaped rib. The optimal parameter combination of the rotary platform was that: the platform thickness was 11.2 mm, the height rib was 31.9 mm, and the rib thickness was 12.3 mm. Through the integration of DOE and finite element simulation technology, the optimization design of bearing parts of horizontal drilling rig is carried out, which provides a reference for the design of the solid prototype of horizontal drilling rig.
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Received: 03 June 2019
Published: 28 December 2019
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基于试验设计与有限元仿真的辐射井水平钻机承载部件优化设计
为了提升辐射井水平钻机承载部件的安全性与稳定性，运用试验设计（design of experiment，DOE）与有限元仿真技术对承载部件进行优化设计。通过正交试验法结合ANSYS Workbench有限元静力学仿真对由回转平台、立支架及横支架组成的承载系统的加强筋板布置形式进行优化设计，获得承载系统加强筋板的最优布局类型。在此基础上，运用基于试验设计的响应面优化法对回转平台的台面厚度、筋板高度及筋板厚度进行优化设计，进一步减小回转平台的最大等效应力、最大变形及质量，提升承载系统的安全性与稳定性。结果表明承载系统加强筋板的最优布局类型为：回转平台采用纵横筋板，立支架采用X形筋板，横支架采用V形筋板；回转平台的最优参数组合为：台面厚度为11.2 mm，筋板高度为31.9 mm，筋板厚度为12.3 mm。集成运用试验设计与有限元仿真技术对水平钻机承载部件进行优化设计的方法可为水平钻机实体样机设计提供一定的参考。
关键词：
水平钻机,
试验设计,
响应面优化法,
优化设计
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