NiTi合金榫接结构微动疲劳研究及数值模拟
Investigation and numerical simulation on fretting fatigue of NiTi
-
摘要: 利用NiTi合金的独特性质,提出了将NiTi合金作为压气机榫接结构的材料.通过有限元软件MSC.Marc进行数值模拟,研究在低周、高低周复合载荷作用下NiTi合金抗微动疲劳特性,并提出利用节点的微动综合参数(FFD)值确定危险点,用名义应力法预测构件的微动疲劳寿命的方法.结果表明:提出的微动疲劳寿命预估方法是合理有效的,NiTi形状记忆合金的抗微动疲劳特性明显优于TC11等普通材料.Abstract: Based on the unique properties of NiTi shape memory alloys(SMA),a new type of dovetail joints was presented in this paper.Finite element analyses(FEA) were performed by using software MSC.Marc to research the fretting fatigue at low cycle fatigue(LCF) and low and high cycle combine fatigue(L-HCCF).Fretting fatigue life was predicted by using nominal stress method,whereby the initiating position of the crack was determined according to fretting fatigue damage(FFD) value.As a consequence,the method of predicting the fretting fatigue life is reasonable and valid,and fretting fatigue-resistance of NiTi-SMA is much better than traditional materials such as TC11.
-
[1] Cowles B.High cycle fatigue inaircraft gastur bines-anindustry perspective[J].Int ernat ionalJ ou rnalof Fract ure,1996,80:147-163. [2] 金家陵,王宏亮.NiTi合金耐磨性研究[J].金属学报,1988,24(1):66-69.JIN Jialing,WANG Hongliang.Wear resistance of NiTialloy[J].Act a Met allrugica Sinica,1998,24(1):66-69.(in Chinese) [3] 阎晓军,聂景旭,孙长任.用于高速转子振动主动控制的智能变刚度支承系统[J].航空动力学报,2000,15(1):63-66.YAN Xiaojun,NIE Jingxu,SUN Changren.Int elligent support system for passing through criticalspeed of high speed rotor by changing stiffness[J].Journal of Aerospace Power,2000,15(1):63-66.(in Chinese) [4] 王永善,贺志荣,王启,等.TiNi形状记忆合金性能及应用研究进展[J].热加工工艺,2009,38(20):18-21.W A NG Y ongshan,HE Zhirong,WA NG Q i,et al.Researchprogress onproperties and application of TiNishape memory alloys[J].Hot Working Technology,2009,38(20):18-21.(in Chinese) [5] D uerig T,Pelt on A,StockelD.Anoverviewo fnitinol medicalapplications[J].Materials Science&Engineering, 1999,A 273 275:149-160. [6] 王晓雪.NiT i合金微动疲劳寿命研究及其数值模拟[D].北京:北京航空航天大学,2007.WANG Xiaoxue.Investigationon fretting fatigue of NiTi and numericalsimulation[D].Beijing:Beijing U niversity of Aeronautics and Astronautics,2007.(in Chinese) [7] MS C Soft ware Corporat ion.MSC.Marc volume A:theory and user inf ormat ion[M].California:MSC Sof tware C orporation,2003. [8] 王心美.NiT i形状记忆合金疲劳断裂性能研究[D].西安:西北工业大学 ,2005.W A NG X inmei.Invest igat iononfat igue and f ract ure behavior of NiTishape memory alloys[D].Xian:Nort hwes ternPolyt echnicalU niversit y,2005.(inChinese) [9] 朱如鹏,潘升材,高德平.微动疲劳中的应力状态参数和微动磨损参数的研究[J].工程力学,1998,15(4):116-121.ZHU Ru peng,PA NS hengcai,GAO Deping.Anumerical study of stress state parameters and fretting wear parameter sin fretting fatigue[J].Engineering Mechanics,1998,15(4):116-121.(in Chinese) [10] 赵少汴.抗疲劳设计[M].北京:机械工业出版社,1994. [11] 王春明.高周、低周及高低周复合载荷作用下微动损伤的实验研究[D].南京:南京航空学院,1989.W A NG Ch unming.Ex periment alresearch ont he fretting damage under high and lowcycle load[D].Nanjing:Nanjing A eronaut icalInst it ut e,1989.(inChines e) [12] 朱如鹏,潘升材.高低周复合载荷作用下微动疲劳寿命预测研究[J].机械强度,1996,18(3):37-40.ZHU Rupeng,PAN Shengcai.Study of predictionof f retting fatigue life under high lowcycle complex loading[J].Journalof Mech anical Strength,1996,18(3):37-40.(in Chinese)
点击查看大图
计量
- 文章访问数: 1481
- HTML浏览量: 0
- PDF量: 409
- 被引次数: 0