این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Materials Forming، جلد ۷، شماره ۱، صفحات ۲-۱۳
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Genetic Algorithm-based Optimization Procedures to Find the Constants of Johnson-Cook Constitutive Equation
چکیده انگلیسی مقاله Johnson-Cook constitutive equation is one of the most famous constitutive equations that have ever been developed to model the hot deformation flow curves of different materials. This equation is a predefined model in the traditional finite element codes to describe the material behavior in applications such as simulating the manufacturing processes. In this work, two different genetic algorithm-based (GA) optimization procedures, referred to as free and constrained optimization procedures, were proposed to find the constants of the Johnson-Cook constitutive equation. The proposed procedures were applied to fit the Johnson-Cook constitutive equation on the experimental flow curves of API X65 pipeline steel. According to the obtained constants, the modeling performances of the proposed procedures were compared with each other and with the modeling performance of the conventional procedure of finding the constants of the Johnson-Cook equation. Root mean square error (RMSE) criterion was used to asses and to compare the performances of the examined procedures. According to the obtained results, it was determined that the proposed free GA based optimization procedure with the RMSE value of 7.2 MPa had the best performance, while the performance of the conventional procedure was the worst.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله M. Rakhshkhorshid |
Department of Mechanical Engineering, Birjand University of Technology, POBOX 97175-569, Birjand, Iran

نشانی اینترنتی http://ijmf.shirazu.ac.ir/article_5633_78d0a7b1e7b860753c787c9f04b005f3.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/453/article-453-2407516.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات