Abstract A new generation of fluid pressure forming technology has been developed for the three typical structures of tubes, sheets, and shells, and hard-to-deform material components that are urgently needed for aerospace, aircraft, automobile, and high-speed train industries. In this paper, an overall review is introduced on the state of the art in fundamentals and processes for lower-pressure hydroforming of tubular components, double-sided pressure hydroforming of sheet components, die-less hydroforming of ellipsoidal shells, and dual hardening hot medium forming of hard-to-deform materials. Particular attention is paid to deformation behaviour, stress state adjustment, defect prevention, and typical applications. In addition, future development directions of fluid pressure forming technology are discussed, including hyper lower-loading forming for ultra-large non-uniform components, precision forming for intermetallic compound and high-entropy alloy components, intelligent process and equipment, and precise finite element simulation of inhomogeneous and strong anisotropic thin shells.

中文翻译：

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复杂薄壁构件流体压力成形技术的基础和工艺

摘要 针对航空航天、飞机、汽车、高铁等行业急需的管、板、壳三种典型结构和难变形材料部件，开发了新一代流体压力成型技术。 . 在本文中，对管状部件低压液压成形、片材部件双面加压液压成形、椭球壳无模具液压成形和双硬化热介质的基本原理和工艺进行了全面回顾。难变形材料的成型。特别注意变形行为、应力状态调整、缺陷预防和典型应用。此外，讨论了流体压力成型技术的未来发展方向，