GH3128蠕变损伤模型预测以及有限元模拟  

Creep damage model prediction and finite element simulation of GH3128

作　　者：康晓东 田子航 刘泳 张申 方龙飞 KANG Xiaodong;TIAN Zihang;LIU Yong;ZHANG Shen;FANG Longfei(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142 [2]中国科学院沈阳自动化研究所,辽宁沈阳110016

出　　处：《钢铁钒钛》2025年第1期165-169,共5页Iron Steel Vanadium Titanium

摘　　要：从蠕变损伤方程构建和有限元模拟两方面对GH3128合金在950℃条件下的高温蠕变行为进行分析。首先,结合K-R模型、Sinh模型及Liu-M模型进行蠕变损伤方程构建,继而对模型寿命预测和损伤行为进行对比分析,发现应力100、90 MPa和80 MPa下寿命预测相对误差最大仅为10.8%,累积相对误差Sinh模型最小为18.3%。而对损伤行为的对比发现Sinh模型和Liu-M模型较K-R模型损伤演化过程要缓和,有利于在有限元模拟时网格的划分,由此得出:对GH3128合金蠕变行为预测效果最好的是Sinh模型。最后,利用ABAQUS软件中Creep子程序接口,通过二次开发编写Sinh模型,有限元模拟的结果表明Sinh模型对GH3128合金蠕变行为分析较为准确和高效。Creep damage equation construction and finite element simulation were used to analyze the high temperature creep behavior of GH3128 alloy at 950℃.Firstly,the creep damage equation was constructed by combining the K-R model,the Sinh model and the Liu-M model.Then the life prediction and damage behavior of the model were compared and analyzed.It is found that the maximum relative error of life prediction under 100,90 MPa and 80 MPa is only 10.8%.The cumulative relative error of the Sinh model was the smallest with the value of 18.3%.The comparison of damage behaviors shows that the damage evolution processes of the Sinh model and the Liu-M model are slower than that of the K-R model,which is beneficial to the meshing in finite element simulation.Therefore,it is concluded that the Sinh model has the best prediction effect on the creep behavior of GH3128 alloy.Finally,the Creep subroutine interface in ABAQUS software was used to program the Sinh model through secondary development.The results of finite element simulation showed that the Sinh model was relatively accurate and efficient in analyzing the creep behavior of GH3128 alloy.

关 键 词：损伤模型 材料蠕变 二次开发 ABAQUS软件 

分 类 号：TF76[冶金工程—钢铁冶金] TG132.3[一般工业技术—材料科学与工程]