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An all-movable rudder designed by thermo-elastic topology optimization and manufactured by additive manufacturing

机译：由热弹性拓扑优化和添加剂制造制造的全动舵

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摘要

In high-speed vehicles, rudders often endure both aerodynamic pressure and thermal loads. The innovative design of rudders is of great importance for the performance of the whole vehicle. In this work, thermo-elastic topology optimization is adopted to design a typical all-movable rudder structure. The compliance of the rudder skin is considered to be a new objective and the moment of inertia of the rudder is constrained during optimization to ensure its fast response to instructions of the control system. Then sensitivity analysis of the structural compliance and the moment of inertia is carried out. Optimization results show that thermal load has a great effect on the optimized configuration and minimizing the compliance of the rudder skin gives much better design than minimizing the global compliance. Subsequently, an engineering-oriented post-processing is conducted to make the optimized design suitable for additive manufacturing. An appropriate printing direction is selected based on the layout of the optimized ribs and certain ribs are reshaped with fillets to make the rudder free of internal support structures. Besides, according to a secondary topology optimization of the ribs and the stress distribution, a set of powder-discharge holes are properly opened on the ribs so that all cavities within the rudder are connected and the metal powder inside the rudder can be discharged with little effort after manufacturing. Finally, the optimized design is successfully printed using Selective Laser Melting, demonstrating the proposed post-processing is effective for additive manufacturing. (C) 2020 Elsevier Ltd. All rights reserved.
机译：在高速车辆中，舵手通常耐受空气动力学和热负荷。舵手的创新设计对于整车的性能非常重要。在这项工作中，采用了热弹性拓扑优化来设计典型的全动舵结构。舵皮的顺应性被认为是一个新的目标，并且在优化期间，舵的惯性矩受到约束，以确保其快速响应控制系统的指令。然后进行结构依从性和惯性矩的敏感性分析。优化结果表明，热负荷对优化配置具有很大的效果，最大限度地减少舵皮的符合性比最小化全球合规性更好的设计。随后，进行了以工程化的后处理进行，以使优化的设计适用于添加剂制造。基于优化肋的布局选择适当的打印方向，并且某些肋用圆角重新装入，以使舵不会没有内部支撑结构。此外，根据肋和应力分布的二级拓扑优化，一组粉末排出孔在肋上适当地打开，使得舵内的所有空腔连接，舵内的金属粉末可以用很少的方式排出制造后的努力。最后，使用选择性激光熔化成功打印了优化的设计，证明了所提出的后处理对于加性制造是有效的。 （c）2020 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Computers & Structures》 |2021年第1期|106405.1-106405.12|共12页
  • 作者

    Song Longlong; Gao Tong; Tang Lei; Du Xinxin; Zhu Jihong; Lin Ye; Shi Guanghui; Liu Hui; Zhou Guannan; Zhang Weihong;

  • 作者单位

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China;

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China|Northwestern Polytech Univ Inst Intelligence Mat & Struct Unmanned Syst Technol Xian 710072 Peoples R China;

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China;

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China;

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China|Northwestern Polytech Univ Inst Intelligence Mat & Struct Unmanned Syst Technol Xian 710072 Peoples R China;

    Beijing Aerosp Technol Inst Beijing 100074 Peoples R China;

    Beijing Aerosp Technol Inst Beijing 100074 Peoples R China;

    AECC Shenyang Liming Aeroengine Corp Ltd Shenyang 110043 Peoples R China;

    AECC Shenyang Liming Aeroengine Corp Ltd Shenyang 110043 Peoples R China;

    Northwestern Polytech Univ State IJR Ctr Aerosp Design & Addit Mfg Sch Mech Engn Xian Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Topology optimization; Thermo-elastic; Rudder; Moment of inertia; Additive manufacturing;

    机译：拓扑优化;热弹性;方向舵;惯性矩;添加剂制造;

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