| 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 |
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| 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 |
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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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