考虑温度影响的复合材料结构载荷测量方法

针对温度环境会影响应变法测量复合材料结构载荷精度的问题,提出了一种考虑温度影响的复合材料结构载荷测量方法。以某型飞机碳纤维复合材料平尾盒段结构剪力测量为例,首先,设计并完成了不同温度环境下的载荷校准试验;其次,采用多元线性回归法建立了常温下的复合材料结构载荷测量模型,并在不同温度条件下进行了载荷模型检验;最后,考虑温度影响对常温下的载荷模型进行了修正与验证。结果表明,文中方法具有可行性和较高的准确性。

A Load Measurement Method for Composite Structure Considering the Effect of Temperature

Aimed at the problem that temperature affects the load measurement accuracy of composite structure by the strain method, a load measurement method is proposed in consideration of the effect of temperature on composite structure. In this paper, taking shear force measurement of carbon fiber composite in horizontal tail box at a certain type of aircraft as an example, tests are to be made. Firstly, the load calibration tests under different temperature environments are designed and completed. Secondly, the multiple linear regression method is used to establish a load measurement model at room temperature, and the load model is checked under different temperature conditions. Finally, the load model at room temperature is modified and verified in consideration of the effect of temperature. The results show that the method in this paper is feasible and the result is accurate