این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Materials Forming، جلد ۱، شماره ۱، صفحات ۱۱-۲۳
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Cold work simulation of hole expansion process and its effect on crack closure
چکیده انگلیسی مقاله Using cold working fastener holes is a simple life enhancement procedure that strengthens metallic components by retarding crack growth around a hole. In the present paper, the residual stress field that is induced by the hole expansion process is obtained based on different material models namely elastic perfect plastic, isotropic hardening and kinematic hardening using three-dimensional finite element method. Moreover, crack closure analysis was performed following introduction of residual stress. The effect of modeling parameters such as percent of cold work, remote tensile stress and crack length is considered. Crack closure analysis indicates that the material model would affects normalized crack opening loads especially at low level of remote tensile stress where small scale yielding is dominant. Cold work simulation results indicate that the residual stress variation through the thickness is considerable. At low stress level, the effect of material behavior model is considerable and at high stress levels the crack opening load is dropped. Moreover, increasing the cold work interference percent results in a higher and deeper compressive residual stress.
کلیدواژه‌های انگلیسی مقاله material behavior,cold work,residual stress,finite elements
نویسندگان مقاله مهرداد آقایی خفری | aghaie khafri
khajenasir university of technology

محمد حسین gozin | mohamad hossen
khajenasir university of technology

نشانی اینترنتی http://ijmf.shirazu.ac.ir/article_2276_721f939c906b67f6e50f8f507290b2f0.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
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