摘要
使用Simufact Additive软件建立TC4锥形管的有限元模型,通过工艺仿真进行参数对比试验,最终选择激光功率310W、扫描速度1000mm/s、层厚0.05mm。通过查看应力场、形变量结果辅助设计环节进行结构优化,在更换支撑方案后,建造环节的总形变量降至0.16mm,降低了71%。在全流程仿真下,热处理、线切割、支撑打磨阶段使变形量达到1.07mm。对BCC点阵的胞元结构进行优化,并以迭代前后的杨氏模量为评估指标,通过均质化有限元法进行预测。结果表明:加强后胞元的杨氏模量由405.4MPa提升至434.9MPa,同时由于强化点与零件无接触,所以未增加后处理难度。
Using Simufact Additive software to establish the finite element model of the TC4 conical tube,the parameter comparison test through process simulation,and finally choose the laser power 310W,scanning speed 1000mm/s,layer thickness 0.05mm.By viewing the stress field and deformation variable results to assist in designing the link for structural optimization,after the replacement of the support scheme,the total deformation variable of the construction link decreased to 0.16mm,a 71% reduction.Under the full process simulation,the heat treatment,wire cutting,and support grinding stages brought the deformation up to 1.07mm.The cellular element structure of the BCC dot matrix was optimized and predicted by the homogenized finite element method using Young’s modulus before and after the iteration as an evaluation index.The results show that the Young’s modulus of the strengthened cell element is increased from 405.4MPa to 434.9MPa,while the difficulty of post-processing is not increased due to the fact that the strengthened points have no contact with the part.
作者
温钟淳
关峰
李明
毕婧涵
谢洪志
王正
WEN Zhongchun;GUAN Feng;LI Ming;BI Jinghan;XIE Hongzhi;WANG Zheng(Shenyang Aircraft Corporation,Shenyang 110850,Liaoning,China)
