Experimental and numerical analysis concerning the behaviour of OL50 steel grade specimens coated with polyurea layer under dynamics loadings

被引：6

作者：

Bucur, Florina ^{[1
]}

Trana, Eugen ^{[1
]}

Rotariu, Adrian ^{[1
]}

Gavrus, Adinel ^{[2
]}

Barbu, Cristian ^{[1
]}

Guines, Dominique ^{[2
]}

机构：

[1] Mil Tech Acad, Bucharest 050141, Romania

[2] UEB, LGCGM EA INSA Rennes 3913, 20 Av Buttes Coesmes, F-35708 Rennes, France

来源：

DYMAT 2015 - 11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING | 2015年 / 94卷

关键词：

NECK RETARDATION;

D O I：

10.1051/epjconf/20159404044

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study refers to an experimental and numerical evaluation of a polyurea coating layer influence on the dynamic behaviour of OL50 specimens. Mechanical quasi-static and dynamic tensile tests were performed in axial loading conditions, for 2 mm steel plate specimens. Several metallic specimens have been previously coated with 1.5 mm and 3 mm respectively thickness polyurea layer and tested in traction. The findings results indicate that the presence of polyurea changes the loading pattern of metallic material in the necking area. In terms of polyurea coated metal specimens fracture, there was clearly observed a change of fracture limit. One possible explanation of this phenomenon is the modification of triaxiality state in the necking zone, fact proven by the numerical simulations. Test results indicate that the presence of polyurea layer delays the necking onset phenomenon which precedes the OL50 metallic specimen fracture.

引用

页数：6

共 17 条

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