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基于ADAMS与ISIGHT的压气机VSV调节机构运动学优化设计
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摘要
VSV调节机构是提高航空发动机压气机喘振裕度的重要机构,该机构在结构上需要满足各转速下静子叶片不同调节角度的气动要求。基于ADAMS和ISIGHT联合优化的方法.对多级扭力杆式VSV调节机构的结构尺寸进行了优化设计。首先基于机构运动规律和建模仿真策略在ADAMS中建立了该调节机构的简化运动学模型,并针对该模型进行了全参数化。以静叶调节规律为目标,结构设计边界为约束,在ISIGHT中调用ADAMS模型进行了运动学分析优化,得到了调节机构各杆件的尺寸参数,其运动学结果满足气动调节精度要求。
VSV system is an important component for improving the surge margin of the aero-engine compressor.The basic structural requirement for this system is to satisfy the various vane angles with different rotor speed.A Kinematic optimization of the multi-stage VSV system is conducted based on joint simulation of ADAMS and ISIGHT.First a simplified kinematic model is built up based on the motions and modeling strategy,then the model is parameterized.The optimization is realized by integrating the ADAMS model in ISIGHT with vane adjusting angel as its target and structure design boundaries as its constraints.The structure dimensions are obtained and the kinematic result shows it could satisfy the vane angle adjustment accuracy.
引文
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