کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7176408 | 1466711 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurement of the strength differential effect of DP980 steel sheet and experimental validation using pure bending test
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The strength differential effect (SDE), i.e., the difference between the flow stress of uniaxial tension and compression, of a dual-phase steel sheet with a tensile strength of 980â¯MPa (DP980) was measured using an in-plane uniaxial tension-compression test apparatus for sheet metals. The SDE data were obtained for a logarithmic total strain range of 0â¤|ε|â¤0.086 in both the rolling (RD) and transverse (TD) directions of the test material. It was observed that the magnitude of the compressive flow stress,ÏC, was consistently higher than that of the tensile flow stress, ÏT, for a strain range of |ε|>0.009 in both the RD and TD; the amount of SDE, defined as ÏCâÏT/ÏTÃ100 (%), at |ε|=0.086 was 5.2% in the RD and 6.2% in the TD. Moreover, in order to validate the SDE, a novel test apparatus for obtaining the pure bending moment M versus curvature κ (i.e., Mâκ) diagram was designed and manufactured. The obtained Mâκ curves were consistent with those based on the elastoplastic numerical analysis considering the SDE. Thus, the SDE of the test material is experimentally validated using the pure bending test.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 256, June 2018, Pages 247-253
Journal: Journal of Materials Processing Technology - Volume 256, June 2018, Pages 247-253
نویسندگان
Taiki Maeda, Nobuyasu Noma, Toshihiko Kuwabara, Frédéric Barlat, Yannis P. Korkolis,