考虑损伤发展的钢材混合强化本构模型
|
摘要
为了更准确地模拟往复荷载作用下金属材料的劣化,在大变形弹塑性理论及损伤力学理论的基础上,采用双线性混合强化模型及Lemaitre损伤模型建立了可考虑损伤发展的混合强化弹塑性本构模型.提出了利用单轴拉伸材料常数计算损伤材料参数的近似方法.利用有限元程序ANSYS的用户可编程特性,将所编制的材料模型子程序嵌入ANSYS程序,对文献中的厚铝环拉压试验及工字钢构件滞回性能试验进行了有限元模拟,计算所得的荷载位移曲线及裂纹萌生寿命均与试验结果吻合较好.
For more accurately simulating the metallic material degradation induced by cyclic load,elasto-plastic material model considering damage evolution and mixed hardening is presented based on the large strain elasto-plastic theory and the damage mechanics theory.Bi-linear mixed hardening model and Lemaitre's damage model are adopted.Making use of the material properties from tensile experiment,an approximation method for calculating the damage material parameters is presented.Using the user programmable features(UPFs) of ANSYS program,the material routine is developed and incorporated into ANSYS program.The hysteretic tests of a thick ring and steel members are simulated using the material model.The hysteretic curve and the crack initiation life from FE(finite element) analysis agree well with the results from the tests.
For more accurately simulating the metallic material degradation induced by cyclic load,elasto-plastic material model considering damage evolution and mixed hardening is presented based on the large strain elasto-plastic theory and the damage mechanics theory.Bi-linear mixed hardening model and Lemaitre's damage model are adopted.Making use of the material properties from tensile experiment,an approximation method for calculating the damage material parameters is presented.Using the user programmable features(UPFs) of ANSYS program,the material routine is developed and incorporated into ANSYS program.The hysteretic tests of a thick ring and steel members are simulated using the material model.The hysteretic curve and the crack initiation life from FE(finite element) analysis agree well with the results from the tests.
引文
[1]贾明明,张素梅.采用抑制屈曲支撑的钢框架结构性能分析[J].东南大学学报:自然科学版,2007,37(6):1041-1047.Jia Mingming,Zhang Sumei.Performance of steelframe installed with buckling-restrained braces[J].Journal of Southeast University:Natural Science Edi-tion,2007,37(6):1041-1047.(in Chinese)
[2]张耀春,于海丰,张文元,等.焊接工字形钢支撑等幅轴向反复循环荷载下低周疲劳性能试验[J].东南大学学报:自然科学版,2009,39(3):525-530.Zhang Yaochun,Yu Haifeng,Zhang Wenyuan,et al.Experimental study on low-cycle fatigue behavior ofwelded I-section steel bracing members under constantamplitude reversed cyclic axial loading[J].Journal ofSoutheast University:Natural Science Edition,2009,39(3):525-530.(in Chinese)
[3]di Sarno L,Elnashai A S.Bracing systems for seismicretrofitting of steel frames[J].Journal of Construction-al Steel Research,2009,65(2):452-465.
[4]Asgarian B,Moradi S.Seismic response of steel bracedframes with shape memory alloy braces[J].Journal ofConstructional Steel Research,2011,67(1):65-74.
[5]宋振森,顾强,苏明周.考虑混合强化和弹塑性损伤的有限元模型[J].西安交通大学学报,2000,34(11):95-98.Song Zhensen,Gu Qiang,Su Mingzhou.Large deflec-tion finite element method model based on damage theo-ry&mixed hardening[J].Journal of Xi'an Jiaotong U-niversity,2000,34(11):95-98.(in Chinese)
[6]陈荣毅.高层钢结构巨型结构体系的地震反应损伤累积研究[D].上海:同济大学土木工程学院,2000.
[7]连尉安.焊接工字形钢支撑低周疲劳性能及其应用研究[D].哈尔滨:哈尔滨工业大学土木工程学院,2006.
[8]Shen Zuyan,Wu Aihui.Seismic analysis of steel struc-tures considering damage cumulation[J].Frontiers ofArchitecture and Civil Engineering in China,2007,1(1):1-11.
[9]ANSYS,Inc.Guide to ANSYS user programmable fea-tures[M].Canonsburg,USA:ANSYS,Inc,2004.
[10]Alfano G,Rosati L.A general approach to the evalua-tion of consistent tangent operators for rate-independentelastoplasticity[J].Computer Methods in Applied Me-chanics and Engineering,1998,167(1/2):75-89.
[11]ANSYS,Inc.Theory reference[M].Canonsburg,USA:ANSYS,Inc,2004.
[12]郭力,李兆霞,陈志文.面向结构状态评估的多尺度损伤模型[J].东南大学学报:自然科学版,2010,40(5):1047-1051.Guo Li,Li Zhaoxia,Chen Zhiwen.Structural state as-sessment oriented multi-scale damage model[J].Jour-nal of Southeast University:Natural Science Edition,2010,40(5):1047-1051.(in Chinese)
[13]Lemaitre J.损伤力学教程[M].倪金刚,陶春虎,译.北京:科学出版社,1996:1-258.
[14]Lemaitre J,Sermage J P.One damage law for differ-ent mechanisms[J].Computational Mechanics,1997,20(1/2):84-88.
[15]Jiang M W.A damaged evolution model for strain fa-tigue of ductile metals[J].Engineering Fracture Me-chanics,1995,52(6):971-975.
[16]Owen D R J,Prakash A,Zienkiewicz O C.Finite ele-ment analysis of non-linear composite materials by useof overlay systems[J].Computers and Structures,1974,4(6):1251-1267.
[2]张耀春,于海丰,张文元,等.焊接工字形钢支撑等幅轴向反复循环荷载下低周疲劳性能试验[J].东南大学学报:自然科学版,2009,39(3):525-530.Zhang Yaochun,Yu Haifeng,Zhang Wenyuan,et al.Experimental study on low-cycle fatigue behavior ofwelded I-section steel bracing members under constantamplitude reversed cyclic axial loading[J].Journal ofSoutheast University:Natural Science Edition,2009,39(3):525-530.(in Chinese)
[3]di Sarno L,Elnashai A S.Bracing systems for seismicretrofitting of steel frames[J].Journal of Construction-al Steel Research,2009,65(2):452-465.
[4]Asgarian B,Moradi S.Seismic response of steel bracedframes with shape memory alloy braces[J].Journal ofConstructional Steel Research,2011,67(1):65-74.
[5]宋振森,顾强,苏明周.考虑混合强化和弹塑性损伤的有限元模型[J].西安交通大学学报,2000,34(11):95-98.Song Zhensen,Gu Qiang,Su Mingzhou.Large deflec-tion finite element method model based on damage theo-ry&mixed hardening[J].Journal of Xi'an Jiaotong U-niversity,2000,34(11):95-98.(in Chinese)
[6]陈荣毅.高层钢结构巨型结构体系的地震反应损伤累积研究[D].上海:同济大学土木工程学院,2000.
[7]连尉安.焊接工字形钢支撑低周疲劳性能及其应用研究[D].哈尔滨:哈尔滨工业大学土木工程学院,2006.
[8]Shen Zuyan,Wu Aihui.Seismic analysis of steel struc-tures considering damage cumulation[J].Frontiers ofArchitecture and Civil Engineering in China,2007,1(1):1-11.
[9]ANSYS,Inc.Guide to ANSYS user programmable fea-tures[M].Canonsburg,USA:ANSYS,Inc,2004.
[10]Alfano G,Rosati L.A general approach to the evalua-tion of consistent tangent operators for rate-independentelastoplasticity[J].Computer Methods in Applied Me-chanics and Engineering,1998,167(1/2):75-89.
[11]ANSYS,Inc.Theory reference[M].Canonsburg,USA:ANSYS,Inc,2004.
[12]郭力,李兆霞,陈志文.面向结构状态评估的多尺度损伤模型[J].东南大学学报:自然科学版,2010,40(5):1047-1051.Guo Li,Li Zhaoxia,Chen Zhiwen.Structural state as-sessment oriented multi-scale damage model[J].Jour-nal of Southeast University:Natural Science Edition,2010,40(5):1047-1051.(in Chinese)
[13]Lemaitre J.损伤力学教程[M].倪金刚,陶春虎,译.北京:科学出版社,1996:1-258.
[14]Lemaitre J,Sermage J P.One damage law for differ-ent mechanisms[J].Computational Mechanics,1997,20(1/2):84-88.
[15]Jiang M W.A damaged evolution model for strain fa-tigue of ductile metals[J].Engineering Fracture Me-chanics,1995,52(6):971-975.
[16]Owen D R J,Prakash A,Zienkiewicz O C.Finite ele-ment analysis of non-linear composite materials by useof overlay systems[J].Computers and Structures,1974,4(6):1251-1267.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心