基于增材制造的30CrMnSiA高速风洞试验模型设计及流固耦合分析研究

Application of additive manufacturing to 30CrMnSiA high speed wind tunnel test model design and fluid-structure interaction analysis

增材制造技术可针对任意复杂形状的零件进行加工,制造周期和成本较低,具有传统机械切削加工所不具备的独特优势,在风洞试验模型制造中具有广泛的应用前景。针对高速风洞模型加工中常用的30CrMnSiA材料,开展了金属粉末制备、检测及材料试件的制造研究,在此基础上,利用测试件数据作为材料性能输入参数,结合增材制造工艺,设计了机翼为中空结构的AgardB模型,利用Ansys有限元分析软件,进行了该模型流固耦合仿真分析,并开展了优化设计,结果表明,中空机翼的模型结构能够满足高速风洞试验要求。

Additive manufacturing technology can be processed in any complex shape parts.The short manufacturing cycle and low cost are its unique advantages compared to the traditional machining,and thus it has wide application prospects in the wind tunnel test model manufacture.In view of the material 30 CrMnSiA commonly used in the high speed wind tunnel model processing,the metal powder preparation,detection and material specimen manufacture are studied.On this basis,with test piece data as a yardstick for material performance,an AgardB model with hollow airfoil is designed based on the additive manufacturing process.Moreover,fluid-structure interaction analysis is conducted for the model using Ansys and the optimal design is carried out.The results indicate that the model structure can meet the requirement of high-speed wind tunnel testing.