毛有胜1 ,李桐1 ,贾文斌 1,2 ,李鑫1 ,刘飞龙 1 ,方磊1.GH4169合金多轴热机械粘塑性本构模型及验证[J].航空发动机,2024,50(3):160-168
GH4169合金多轴热机械粘塑性本构模型及验证
Multiaxial Thermo-mechanical Viscoplastic Constitutive Model and Verification of GH4169 Alloy
  
DOI:
中文关键词:  GH4169  多轴疲劳  热机械疲劳  Chaboche模型  Lemaitre损伤模型  临界面理论  粘塑性势函数修正系数
英文关键词:GH4196  multiaxial fatigue  thermo-mechanical fatigue  Chaboche model  Lemaitre damage model  critical plane theory  viscoplastic potential function correction coefficient
基金项目:中央高校基本科研业务费专项资金(1002/DLJ2102301)资助
作者单位
毛有胜1 ,李桐1 ,贾文斌 1,2 ,李鑫1 ,刘飞龙 1 ,方磊1 1.南京航空航天大学 能源与动力学院南京 210016 2.浙江大学 能源工程学院杭州 310027 
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中文摘要:
      为了更加精确地描述GH4169合金的多轴热机械力学行为,以Chaboche粘塑性本构模型为基础,引入了Lemaitre损伤模 型、基于临界面理论的非比例强化因子和粘塑性势函数修正系数,提出建立了一种适用于GH4169合金的多轴热机械疲劳粘塑性 本构模型,来描述材料的循环软化、非比例硬化和非玛辛效应,并给出了本构模型各参数的获取方法。采用此本构模型,对 GH4169合金的多轴和热机械力学行为进行了模拟研究,结果表明:在20 ℃时,分别对轴向加载、扭转加载、比例加载、45°非比例 加载以及90°非比例加载这5种加载条件下的第200次循环的迟滞回线进行模拟,轴向的应力峰谷值均与试验值结果吻合;在 650 ℃时,模拟比例加载、45°非比例加载和90°非比例加载这3种加载条件下的第200次循环的迟滞回线,结果与试验值基本吻合, 证明了建立的模型适用于高温条件;模拟300 ℃、550 ℃和650 ℃这3种温度下的单轴轴向加载和圆形路径加载的迟滞回线,结果 与试验值基本吻合;模拟同相位与反相位加载条件下的第200次循环迟滞回线,修正后的本构模型的模拟值与试验值吻合良好。
英文摘要:
      In order to describe the multiaxial thermo-mechanical behavior of GH4169 alloy more accurately, based on the Chaboche viscoplastic constitutive model, by introducing the Lemaitre damage model, the non-proportional strengthening factor based on critical plane theory, and the viscoplastic potential function correction coefficient, a multiaxial thermo-mechanical fatigue viscoplastic constitu? tive model suitable for GH4169 alloy was proposed to describe cyclic softening, non-proportional hardening, and non-Masing behavior of the material, and the method for obtaining the parameters of the constitutive model was provided. This constitutive model was used to simulate the multiaxial and thermo-mechanical behavior of GH4169 alloy. The results show that at 20 ℃, for the simulations of the hysteresis loops of the 200th cycle under five loading conditions (axial loading, torsional loading, proportional loading, 45 ° non- proportional loading, and 90 ° non-proportional loading), the results of the axial stress peaks and valleys are consistent with the experimental results; at 650 ℃, for the simulation of the hysteresis loops of the 200th cycle under three loading conditions (proportional loading, 45 ° non proportional loading, and 90 ° non proportional loading), the results are basically consistent with the experimental results, proving that the established model is suitable for high temperature conditions; for the simulations of the hysteresis loops of uniaxial axial loading and circular path loading at 300 ℃, 550 ℃, and 650 ℃, the results are basically consistent with the experimental values; for the simulations of the hysteresis loops of the 200th cycle under in-phase and antiphase loading conditions, the simulated values of the corrected constitutive model are in good agreement with the experimental values.
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