带筋薄壁筒形构件是高速飞行器等航天装备的主承力结构，决定着装备的整体性能。旋压成形是实现带筋薄壁筒体整体制造的一种有效方法，但存在充筋不足和筋部断裂等缺陷。本项目将超声能场引入旋压成形工艺，提出带筋薄壁构件超声辅助旋压成形工艺新方法，通过超声能场促进材料流动、增加内筋高度，实现带筋薄壁构件高精度整体制造。建立超声辅助旋压成形中铝合金材料本构关系与损伤预测模型，精确描述材料在循环加载和超声能场协同作用下的流动行为与损伤机制；构建带筋薄壁构件超声辅助旋压成形工艺仿真分析模型，揭示工艺参数对薄壁筒体变形与内筋填充的作用规律，提出铝合金带筋薄壁构件超声辅助旋压成形精度控制方法；开展超声辅助旋压成形工艺原型实验，实现高精度铝合金高筋薄壁构件制造。从材料特性、工艺建模与工艺实验三方面为铝合金带筋薄壁构件超声辅助旋压成形做出重要探索，为我国未来航空航天带筋轻量化构件高精度制造提供理论基础与技术支撑。

Thin-walled shell with inner ribs is the main load-carrying structure for aerospace products such as hypersonic aircraft, which decides the products overall performance. Spinning process is an effective method to realize the integrated manufacturing of shells and inner ribs. However, this process still has defects of insufficient filling and rib fracture. This project proposes a novel process to fabricate the thin-walled shell with inner ribs by introducing ultrasonic energy into spinning process based on the mechanism of material flow promotion by ultrasonic energy. Firstly, a material constitutive model and damage prediction model are established to describe the material flow behavior and damage mechanism under the synergistic effect of cyclic loading and ultrasonic energy. Secondly, a simulation model is further built for the ultrasonic-assisted spinning process. The influence of process parameters on the filling of shells and inner ribs of thin-walled components will be investigated and a control method for forming precision will be proposed. Finally, a series of experiments will be conducted based on ultrasonic-assisted spinning machine and a prototype of aluminum alloy thin-walled shell with inner ribs will be fabricated to demonstrate the feasibility of the novel process. This proposal will be a beneficial exploration for the fabrication of thin-walled shell with inner ribs based on the ultrasonic-assisted spinning process from the aspects of material, process and experiments. Besides, it provides a theoretical basis and technical support for high-precision manufacturing of lightweight components for aeronautics and astronautics application.