露天试车台在拉力载荷作用下的静态变形分析

Effect of Sunshine Radiation on Thermal Expansion and Cooling Shrinkage of Aero-engine Open-air Bench Model

随着航空发动机研制要求的不断提高,各种功能的露天试车台已经成为航空发动机整机试验体系中不可或缺的组成部分。在对露天台结构模型进行有效的简化基础上,利用ANSYS Workbench软件对其在不同拉力载荷作用下产生的静态变形量进行计算与分析,通过与实际测量数据进行对比验证,实现了单立柱悬臂式航空发动机露天试车台架测试性能分析与评估,同时研究了露天环境对其测量结果的影响规律,得到了250 kN载荷下模型静态变形校准量。结果表明:ANSYS Workbench计算静态变形整体平均误差为10.1%,发动机处考核点平均误差为5.16%,动架前端考核点平均误差为15.29%,动架后端考核点平均误差为9.85%,对比结果具有很好的吻合度,为露天试车台试验测试数据分析与校准提供了有力保障。

With the continuous improvement of aeroengine development requirements,outdoor test-bench with various functions has become an integral part of aeroengine testing system.Based on the effective simplification of the structure model of the exposed platform,the static deformation of the exposed platform under different tension loads was calculated and analyzed by using ANSYS Workbench software.Compared with the actual measurement data,performance and evaluation of the single-column cantilevered aeroengine outdoor test bench were conducted,and the outdoor environment was studied according to the influence of the measurement results,and the static deformation calibration of the model under the load of 250kN was obtained.Results show that the overall average error of the static deformation calculated by ANSYS Workbench was 10.1%,the average error of the assessment point at the engine was 5.16%,that at the front end of the moving frame was 15.29%,and that at the rear end of the moving frame was 9.85%.The comparison results have a good agreement,which provides a strong guarantee for the analysis and calibration of the test data of the open test bench.