大型结构部件载荷标定试验方法研究

Study on Load Calibration Test for Large sized Structural Components

以飞机机翼等大型结构为例 ,探讨了大型结构部件载荷标定试验的力学模型。通过结构部件直接进行应变桥路传感器设计和标定、加载试验的现场实施以及对试验数据的分析处理、优化与检验、置信区间探讨 ,建立了以飞机机翼、尾翼等大型结构部件为例的载荷输入与应变输出关系方程 ,以此来获得载荷测量截面在实际工作过程中的载荷时间历程 ,为大型结构部件的寿命估算。

As an example of large sized structural component, the mechanical model of load calibration test of an airplane wing was analysed. The relationship between the load input and the strain output was experimentally investigated and its correlation was established through the multiple regression of test data, optimization and remarkable test, determination of confidence interval, and so on. The load time history of the measurement cross section of the airplane wing and tail in actual flying was obtained based on the tests. It offers references for distributed load calculation, life estimation, reliability based design, etc.