叶片电化学加工过程多场耦合仿真  

Multi-physics Coupling Simulation of ECM Processes for Compressor Blade

作　　者：陈远龙[1] 方明[1] 裴迪[1] 常伟杰[1] Chen Yuanlong Fang Ming Pei Di Chang Weijie(Hefei University of Technology, Hefei, 23000)

机构地区：[1]合肥工业大学,合肥230009

出　　处：《中国机械工程》2016年第22期3087-3092,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51075111);中央高校基本科研业务费专项资金资助项目(JZ2013HGCH0004;JZ2015HGQC0206)

摘　　要：针对叶片电化学加工过程难以预测、实验参数修正周期长的问题,建立与温度相关的叶片多场耦合仿真模型,基于COMSOL Multiphysics平台对叶片电化学加工过程进行多场耦合仿真,仿真分析了不同加工电压和不同进液流量对法向平衡间隙的影响。结果表明:加工电压越大,间隙也相应增大,且间隙分布越不均匀;进液流量越大,间隙分布越均匀。采用其中一组仿真参数进行工艺实验,仿真与实验的对比结果表明,叶片轮廓曲率变化缓慢处的仿真结果和实验结果比较贴合,而轮廓曲率变化较快处的仿真值与实验值差别相对较大,但两者的变化趋势相同。A temperature dependent multi-physics coupling model was developed to predict ECM process and shorten the period for modifying machining parameters.Based on COMSOL multiphysics software,ECM processes for compressor blades were simulated and influences of the applied potential and the inlet mass flow on the normal equilibrium gap were analyzed.The simulation results indicate that with the applied potential increasing,the gap is increasing and the distribution of gap is less and less uniformity.However,with the inlet mass flow increasing,the distribution of gap tends to uniformity.The ECM experiments were carried out according to a set of simulation parameters.Comparisons between simulation and experimental results indicate that the errors are small when the blade profile curvature changes slowly and the errors are relatively large,but variation trend of the gap is same when the blade profile curvature changes fast.

关 键 词：叶片 电化学加工 多物理场 耦合仿真 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]