کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
801203 | 1467819 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of localized strain on fracture of high-strength structural steel with varying stress stiffness
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of localized strain on fracture of high-strength structural steel with varying stress stiffness Effect of localized strain on fracture of high-strength structural steel with varying stress stiffness](/preview/png/801203.png)
چکیده انگلیسی
The paper studies the mechanical properties and configuration of plastic zones in notched high-strength structural steel under tension. Quantitative analysis of the plastic zones is made by constructing strain intensity distribution patterns with the use of the television-optical measuring complex TOMSC. Fracture associated with plastic flow is analyzed by comparing fractographs and distributions of strain characteristics. It is found that the fracture originates in a region with maximum strain intensity. It is shown that the mechanisms of plastic flow in high-strength steel specimens with Î < 1.58 and Î > 4.65, where Î is the index of initial stress stiffness, differ considerably. It is demonstrated that the high-strength steel specimens are fractured by quasibrittle mechanisms; however, ductile micromechanisms through pore nucleation and growth remain operative at all stages of fracture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physical Mesomechanics - Volume 13, Issues 3â4, MayâAugust 2010, Pages 173-177
Journal: Physical Mesomechanics - Volume 13, Issues 3â4, MayâAugust 2010, Pages 173-177
نویسندگان
L.S. Derevyagina, V.E. Panin, A.I. Gordienko,