三维四向C/C复合材料高温氧化环境强度预测
|
摘要
在细观尺度下,基于逐渐损伤理论,建立了一种三维四向C/C复合材料高温强度预测模型。模型考虑了纤维束挤压后的截面形状、单胞的周期性以及纤维束和基体的脱黏等因素,引入考虑温度的三维Hashin失效准则进行单元的失效判定,预测了三维四向C/C复合材料室温和有防氧化保护700℃的拉伸强度。为了将模型发展到高温氧化环境,建立了考虑氧化速率的纤维束高温氧化环境力学性能退化模型,结合纤维束和单向板力学性能等价性原理,实现了无防氧化保护下三维四向C/C复合材料700℃拉伸强度的预测。研究了切边加工对三维四向复合材料强度的影响,建立了考虑切边宽度的切边三维四向复合材料强度预测模型,预测了有、无防氧化保护切边宽度为18mm的三维四向C/C复合材料拉伸强度。结果表明:对非切边试验件在室温、有防氧化涂层700℃和无防氧化涂层700℃的预测误差分别为5.51%、7.20%和7.13%,拉伸过程的应力-应变曲线与试验结果吻合度较好;对切边试验件在室温和有防氧化涂层700℃的预测误差分别为0.88%和4.53%。多种类的算例表明预测模型合理、可靠。
Based on progressive damage method,a kind of high temperature strength prediction model of 3-D four directional C/C composites was established on microscopic scale.The section shape of fiber bundle after extrusion,periodicity of unit cell,and fiber bundles debonding were taken into account in the model.The 3-D Hashin failure criterion considering temperature was introduced to determine the elements failure.And then the tensile strength prediction of 3-D four directional C/C composites at room temperature and700℃ under oxidation protection was achieved.In order to introduce the model in high temperature oxidation environment,the mechanical property degradation model of fiber bundles was established in consideration of oxidation rate.The mechanical properties equivalence of fiber bundles and unidirectional plates was proposed.The tensile strength of 3-D four directional C/C composites without oxidation protection was predicted.Trimming process influence on the strength of 3-D four directional composites was investigated,and the strength prediction model of trimming 3-D four directional composites considering trimming width was established.The tensile strength of trimming 3-D four directional C/C composites with and without oxidation protection 18 mm width was predicted.Results show that the prediction errors are 5.51%,7.20% and 7.13% for non-trimming specimens at room temperature,700℃ with anti-oxidation coating and 700℃ without anti-oxidation coating.The stressstrain curve of tensile process for prediction is quite in accord with experiment.The prediction errors are 0.88%and 4.53%for trimming specimens at room temperature,700℃ with anti-oxidation coating.Several kinds of examples show that the prediction model is reasonable and reliable.
Based on progressive damage method,a kind of high temperature strength prediction model of 3-D four directional C/C composites was established on microscopic scale.The section shape of fiber bundle after extrusion,periodicity of unit cell,and fiber bundles debonding were taken into account in the model.The 3-D Hashin failure criterion considering temperature was introduced to determine the elements failure.And then the tensile strength prediction of 3-D four directional C/C composites at room temperature and700℃ under oxidation protection was achieved.In order to introduce the model in high temperature oxidation environment,the mechanical property degradation model of fiber bundles was established in consideration of oxidation rate.The mechanical properties equivalence of fiber bundles and unidirectional plates was proposed.The tensile strength of 3-D four directional C/C composites without oxidation protection was predicted.Trimming process influence on the strength of 3-D four directional composites was investigated,and the strength prediction model of trimming 3-D four directional composites considering trimming width was established.The tensile strength of trimming 3-D four directional C/C composites with and without oxidation protection 18 mm width was predicted.Results show that the prediction errors are 5.51%,7.20% and 7.13% for non-trimming specimens at room temperature,700℃ with anti-oxidation coating and 700℃ without anti-oxidation coating.The stressstrain curve of tensile process for prediction is quite in accord with experiment.The prediction errors are 0.88%and 4.53%for trimming specimens at room temperature,700℃ with anti-oxidation coating.Several kinds of examples show that the prediction model is reasonable and reliable.
引文
[1]李贺军.碳/碳复合材料[J].新型碳材料,2001,16(2):70-80.LI Hejun.C/C composites[J].New Carbon Materials,2001,16(2):79-80.(in Chinese)
[2]李爱军,李贺军,李克智,等.C/C复合材料CVI工艺人工神经网络建模[J].中国科学:E辑,2003,33(3):209-216.LI Aijun,LI Hejun,LI Kezhi,et al.Artificial neural network modeling for C/C composite CVI process[J].Science in China:Series E,2003,33(3):209-216.(in Chinese)
[3]高燕,宋怀河,陈晓红.C/C复合材料的研究进展[J].材料导报,2002,16(7):44-47.GAO Yan,SONG Huaihe,CHEN Xiaohong.Progress in research on C/C composites[J].Materials Review,2002,16(7):44-47.(in Chinese)
[4]郭正,赵稼祥.C/C复合材料的研究与发展[J].宇航材料工艺,1995,25(5):1-7.GUO Zheng,ZHAO Jiaxiang.Research and development of C/C composite materials[J].Aerospace Materials and Technology,1995,25(5):1-7.(in Chinese)
[5]李崇俊,马伯信,金志浩,等.C/C复合材料的新发展[J].材料科学与工程学报,2000,18(3):135-140.LI Chongjun,MA Boxin,JIN Zhihao,et al.Recent developments of C/C composites[J].Materials Science and Engineering,2000,18(3):135-140.(in Chinese)
[6]李贺军,罗瑞盈,杨峥.C/C复合材料在航空领域的应用研究现状[J].材料工程,1997,25(8):8-10.LI Hejun,LUO Ruiying,YANG Zheng.The status and future on research and application about C/C composites in the aeronautical area[J].Journal of Materials Engineering,1997,25(8):8-10.(in Chinese)
[7]董孚允,王春敏,董娟.三维纺织复合材料的发展和应用[J].纤维复合材料,2001,18(3):37-40.DONG Fuyun,WANG Chunmin,DONG Juan.Development and application of 3Dtextile composites[J].Fiber Composites,2001,18(3):37-40.(in Chinese)
[8]朱元林.C/C复合材料疲劳寿命预测与分析方法研究[D].南京:南京航空航天大学,2012.ZHU Yuanlin.Research on prediction of damage failure and fatigue life C/C composites[D].Nanjng:Nanjing University of Aeronautics and Astronautics,2012.(in Chinese)
[9]宋健,温卫东.考虑温度环境下树脂基复合材料力学性能及模型研究[J].航空动力学报,2016,31(1):31-39.SONG Jian,WEN Weidong.Study on mechanical properties of resin composites and models considering temperature environment[J].Journal of Aerospace Power,2016,31(1):31-39.(in Chinese)
[10]杨尊社,卢刚认,曲德全,等.C/C复合材料的磷酸盐与硼系涂料的防氧化研究[J].材料保护,2001,34(3):12-13.YANG Zunshe,LU Gangren,QU Dequan,et al.Anti-oxidation of phosphate and boron contained coatings for C/Ccomposite brake material[J].Materials Protection,2001,34(3):12-13.(in Chinese)
[11]武保华,刘春立,张涛,等.碳/碳复合材料超高温力学性能测试研究[J].宇航材料工艺,2001,31(6):67-72.WU Baohua,LIU Chunli,ZHANG Tao,et al.Research on mechanical properties test of C/C composites at ultra high temperature[J].Aerospace Materials and Technology,2001,31(6):67-72.(in Chinese)
[12]LAN Fengtao,LI Kezhi,LI Hejun,et al.High-temperature property of carbon/carbon composite joints bonded with ternary Ti-Si-C compound[J].Journal of Alloys and Compounds,2009,480(2):747-749.
[13]陈波,温卫东,崔海涛,等.三维四向C/C复合材料高温氧化环境力学试验[J].航空动力学报,2018,33(8):1916-1922.CHEN Bo,WEN Weidong,CUI Haitao,et al.Test on mechanics of three dimensional four directional C/C composites at elevated temperature and oxidation environment[J].Journal of Aerospace Power,2018,33(8):1916-1922.(in Chinese)
[14]孙慧玉.三维编织复合材料拉伸性能研究[J].南京航空航天大学学报,1995,27(6):721-725.SUN Huiyu.Research on tensile properties of 3-D braided composite materials[J].Journal of Nanjing University of Aeronautics and Astronautics,1995,27(6):721-725.(in Chinese)
[15]魏丽梅.切边对三维编织复合材料力学性能的影响[D].天津:天津工业大学,2005.
[16]CHEN L,TAO X M,CHOY C L.On the microstructure of three-dimensional braided performs[J].Composites Science and Technology,1999,59(3):391-404.
[17]XIA Z,ZHANG Y,ELLYIN F.A unified periodical boundary conditions for representative volume elements of composites and applications[J].International Journal of Solids and Structures,2003,40(8):1907-1921.
[18]张超,许希武,毛春见.三维编织复合材料渐进损伤模拟及强度预测[J].复合材料学报,2011,28(2):222-230.ZHANG Chao,XU Xiwu,MAO Chunjian.Progressive damage simulation and strength prediction of 3Dbraided composites[J].Acta Materiae Compositae Sinica,2011,28(2):222-230.(in Chinese)
[2]李爱军,李贺军,李克智,等.C/C复合材料CVI工艺人工神经网络建模[J].中国科学:E辑,2003,33(3):209-216.LI Aijun,LI Hejun,LI Kezhi,et al.Artificial neural network modeling for C/C composite CVI process[J].Science in China:Series E,2003,33(3):209-216.(in Chinese)
[3]高燕,宋怀河,陈晓红.C/C复合材料的研究进展[J].材料导报,2002,16(7):44-47.GAO Yan,SONG Huaihe,CHEN Xiaohong.Progress in research on C/C composites[J].Materials Review,2002,16(7):44-47.(in Chinese)
[4]郭正,赵稼祥.C/C复合材料的研究与发展[J].宇航材料工艺,1995,25(5):1-7.GUO Zheng,ZHAO Jiaxiang.Research and development of C/C composite materials[J].Aerospace Materials and Technology,1995,25(5):1-7.(in Chinese)
[5]李崇俊,马伯信,金志浩,等.C/C复合材料的新发展[J].材料科学与工程学报,2000,18(3):135-140.LI Chongjun,MA Boxin,JIN Zhihao,et al.Recent developments of C/C composites[J].Materials Science and Engineering,2000,18(3):135-140.(in Chinese)
[6]李贺军,罗瑞盈,杨峥.C/C复合材料在航空领域的应用研究现状[J].材料工程,1997,25(8):8-10.LI Hejun,LUO Ruiying,YANG Zheng.The status and future on research and application about C/C composites in the aeronautical area[J].Journal of Materials Engineering,1997,25(8):8-10.(in Chinese)
[7]董孚允,王春敏,董娟.三维纺织复合材料的发展和应用[J].纤维复合材料,2001,18(3):37-40.DONG Fuyun,WANG Chunmin,DONG Juan.Development and application of 3Dtextile composites[J].Fiber Composites,2001,18(3):37-40.(in Chinese)
[8]朱元林.C/C复合材料疲劳寿命预测与分析方法研究[D].南京:南京航空航天大学,2012.ZHU Yuanlin.Research on prediction of damage failure and fatigue life C/C composites[D].Nanjng:Nanjing University of Aeronautics and Astronautics,2012.(in Chinese)
[9]宋健,温卫东.考虑温度环境下树脂基复合材料力学性能及模型研究[J].航空动力学报,2016,31(1):31-39.SONG Jian,WEN Weidong.Study on mechanical properties of resin composites and models considering temperature environment[J].Journal of Aerospace Power,2016,31(1):31-39.(in Chinese)
[10]杨尊社,卢刚认,曲德全,等.C/C复合材料的磷酸盐与硼系涂料的防氧化研究[J].材料保护,2001,34(3):12-13.YANG Zunshe,LU Gangren,QU Dequan,et al.Anti-oxidation of phosphate and boron contained coatings for C/Ccomposite brake material[J].Materials Protection,2001,34(3):12-13.(in Chinese)
[11]武保华,刘春立,张涛,等.碳/碳复合材料超高温力学性能测试研究[J].宇航材料工艺,2001,31(6):67-72.WU Baohua,LIU Chunli,ZHANG Tao,et al.Research on mechanical properties test of C/C composites at ultra high temperature[J].Aerospace Materials and Technology,2001,31(6):67-72.(in Chinese)
[12]LAN Fengtao,LI Kezhi,LI Hejun,et al.High-temperature property of carbon/carbon composite joints bonded with ternary Ti-Si-C compound[J].Journal of Alloys and Compounds,2009,480(2):747-749.
[13]陈波,温卫东,崔海涛,等.三维四向C/C复合材料高温氧化环境力学试验[J].航空动力学报,2018,33(8):1916-1922.CHEN Bo,WEN Weidong,CUI Haitao,et al.Test on mechanics of three dimensional four directional C/C composites at elevated temperature and oxidation environment[J].Journal of Aerospace Power,2018,33(8):1916-1922.(in Chinese)
[14]孙慧玉.三维编织复合材料拉伸性能研究[J].南京航空航天大学学报,1995,27(6):721-725.SUN Huiyu.Research on tensile properties of 3-D braided composite materials[J].Journal of Nanjing University of Aeronautics and Astronautics,1995,27(6):721-725.(in Chinese)
[15]魏丽梅.切边对三维编织复合材料力学性能的影响[D].天津:天津工业大学,2005.
[16]CHEN L,TAO X M,CHOY C L.On the microstructure of three-dimensional braided performs[J].Composites Science and Technology,1999,59(3):391-404.
[17]XIA Z,ZHANG Y,ELLYIN F.A unified periodical boundary conditions for representative volume elements of composites and applications[J].International Journal of Solids and Structures,2003,40(8):1907-1921.
[18]张超,许希武,毛春见.三维编织复合材料渐进损伤模拟及强度预测[J].复合材料学报,2011,28(2):222-230.ZHANG Chao,XU Xiwu,MAO Chunjian.Progressive damage simulation and strength prediction of 3Dbraided composites[J].Acta Materiae Compositae Sinica,2011,28(2):222-230.(in Chinese)