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论文摘要

奥氏体不锈钢00Cr17Ni14Mo2断裂力学参量的有限元计算和实验验证

The Calculation of Properties of Fracture and Experimental Certification for 00Cr17Ni14Mo2

作者:曾祥国(四川大学 建筑与环境学院,四川 成都 610065);王清远(四川大学 建筑与环境学院,四川 成都 610065);郑恒伟(重庆大学 资源与环境科学学院,重庆 400044)

Author:(School of Architecture and Environment,Sichuan Univ., Chengdu 610065, China);(School of Architecture and Environment,Sichuan Univ., Chengdu 610065, China);(College of Resource & Environmental Science, Chonging Univ., Chongqing 400044,China)

收稿日期:2005-09-26          年卷(期)页码:2006,38(2):19-23

期刊名称:工程科学与技术

Journal Name:Advanced Engineering Sciences

关键字:00Cr17Ni14Mo2;J积分;能量释放率;虚拟裂纹闭合法;有限元法

Key words:00Cr17Ni14Mo2; J -integral; energy release rate; virtual crack close technique; finite element method

基金项目:四川大学“985”科技创新平台引进人才资助项目;国家自然科学基金资助项目(10372119)

中文摘要

奥氏体不锈钢00Cr17Ni14Mo2由于具有优越的综合机械性能而被用于制造重要零部件。为了使奥氏体不锈钢00Cr17Ni14Mo2零部件能安全工作,用MTS高级材料实验机在应变控制条件下获得奥氏体不锈钢00Cr17Ni14Mo2的单向拉伸应力应变曲线和常规的机械性能参数;用三点弯曲试件测定了00Cr17Ni14Mo2的J积分。基于虚拟裂纹闭合法和Rice的J积分法,利用ANSYS有限元商业软件对三点弯曲试件进行了有限元分析计算,获得了相应载荷下的能量释放率G和J积分。并将计算结果与实验值进行了比较。理论计算与实验结果的比较表明:理论计算与实验结果相当吻合,该方法可用于奥氏体不锈钢构件断裂力学参量的数值分析和计算。

英文摘要

The strain stress curve and the J -integral were carried out using MTS machine for 00Cr17Ni14Mo2. Energy release rates G and the J -integral were evaluated based on the virtual crack closure technique and the method for Rice's J -integral. We also get G and J -integral by using the software of Ansys with the same force. Then comparing the solution of caculation with the value of experimental, which shows that they are in good agreement.

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