Damage Mechanics of Ferrite Ductile Iron under Uniaxial Stress

钢铁研究学报(英文版), 2003, 10(3): 41-45.

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1.Hebei University of Technology, Tianjin 300132, China

2.Hebei University of Technology, Tianjin 300132, China

3.Xi′an Jiaotong University, Xi′an 710049, China

4.Hebei University of Technology, Tianjin 300132, China

5.Hebei University of Technology, Tianjin 300132, China

基金项目: The authors are grateful to the the Education Committee of Hebei for the financial support(B2003102)

Damage Mechanics of Ferrite Ductile Iron under Uniaxial Stress

Keywords： nodular cast iron

According to the principle of damage mechanics, the damage characteristics of ferrite nodular cast iron under uniaxial stress were studied by measuring electric resistance. The results show that the damage in nodular cast iron occurs when the applied stress is more than a certain extent, and the damage variable increases with stress. The evolutional law of damage variable as a function of stress was obtained. The damage threshold of nodular cast iron increases with nodularity, but it is below the yield strength, which provides reference significance to the design of machinery structure and the choice of materials. The critical damage variable is not related to the nodularity, which is about 0.060-0.068.

参考文献

[1]	Jean Lemaitre .A Continuous Damage Mechanics Model forDuctile Fracture[J].ASME Journal of Engineering Materials and Technology,1985,107(01):83-89.
[2]	Shen Zhen .Damage Mechanics and Its Application to Compos-ite Materials[J].力学进展,1985,15(02):147-161.
[3]	Zhang Wo-hua;Valliappan S .Continuous Damage MechanicsTheory and Application[J].International Journal of Damage Mechanics,1998,7(07):274-297.
[4]	Shi Ming-ze;Lin Zhao-xiang;Lu Xi-ru.Measurement ofDamage Factor Dc of Brittle Materials[J].Physicochemical and Engineering Aspects,1990(04):37-38.
[5]	H. E. Fang;C. L. Chow;F. Yang .A Method of Damage Mechanics Analysis for Solder Material[J].Key engineering materials,1998(1):367-374.
[6]	Lu Yun-bing .Mechanical Behaviours of Carbon Steel WhenDamaged[J].Journal of Huazhong Institute,1985,36(06):113-118.
[7]	Y. L. Bai;M. F. Xia;F. J. Ke .Dynamic Function of Damage and Its Implications[J].Key engineering materials,1998(1):411-420.
[8]	Jean Lemaitre;Jacques Dufailly .Damage Mechanics[J].Engineering Fracture Mechanics,1987(28):643-661.
[9]	Jean Lemaitre.Damage Modelling for Prediction of Plastic orCreep Fatigue-Failure in Structures[J].Journal of Solid Mechanics,1981(04):512-525.
[10]	Qian Zhi-ping.Deformation and Fracture of Materials[M].上海:同济大学出版社,1989
[11]	Jiang Ming-wen.Measurement of Critical Damage Factor Dcof Materials at Fatigue[J].Physicochemical and Engineering Aspects,1990(02):40-41.

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Damage Mechanics of Ferrite Ductile Iron under Uniaxial Stress

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