一种基于应力控制的金属薄壳结构变形修复方法研究

研究了一种基于应力控制的金属薄壳结构变形修复方法，通过应用该方法成功实现了飞机整体油箱金属结构变形故障的修复。该方法在能量原理研究的基础上，通过研究变形修复中的结构内应力控制，在变形部位施加反向应力，使变形的金属薄壳结构恢复至原始形貌，从而达到修复变形的目的。整体油箱作为典型的金属薄壳结构，在修复过程中还需要保证气动外形、隐身功能等飞机特有的功能特性，因此，该变形修复过程需要多结构系统协调平衡、多领域综合优化。在修复飞机整体油箱这一典型金属薄壳结构变形故障的实践过程中，研究基于应力控制的金属薄壳结构变形修复方法，实现了对整体油箱金属薄壳结构的变形修复，对金属薄壳结构变形修复的研究具有重要的指导意义，为相关领域的变形修复提供了新的思路。

Study on a Method for Metal Thin-Shell Structure Deformation Repair Based on Stress Control

A metal thin-shell structure deformation repair method based on stress control is studied.By applying this method,the deformation fault of the metal structure of the aircraft integral fuel tank has been successfully repaired.Based on the theoretical study of energy principle,the method studies the internal structural stress control in the deformation repair,and applies the reverse stress to the deformed area,so that the deformed thin-shell structure of the integral fuel tank can be restored to its original shape,thereby achieving the purpose of repairing the deformation.As a typical metal thin-shell structure,the integral fuel tank also needs to ensure the unique functional characteristics of aircraft,such as aerodynamics and stealth.Therefore,the deformation repair process requires the coordination and balance of multiple structural systems and the comprehensive optimization in multiple fields.The deformation repair method of metal thin-shell structure based on stress control is studied in the practical process of repairing the typical metal thin-shell structure deformation failure of the aircraft integral fuel tank.The deformation repair of whole fuel tank metal thin-shell structure is realized.The research on the deformation repair of metal thin-shell structures has important guiding significance and provides new ideas for the deformation repair in related fields.