scholarly journals Strength and Fracture Behaviour of Dual Phase Steel Dp450 in Static and Dynamic Conditions

2019 ◽  
Vol 21 (4) ◽  
pp. 63-68
Author(s):  
Sunil Kumar Meluru Ramesha ◽  
Eva Schmidova
Keyword(s):  
Plastic Strain ◽  
Energy Absorption ◽  
Dual Phase Steel ◽  
Dynamic Strength ◽  
Hardness Measurement ◽  
Dual Phase ◽  
Body Parts ◽  
Dynamic Conditions ◽  
Plastic Strain Energy ◽  
Pendulum Impact

In this work, strength and plastic deformation effect of the dual phase steel are analysed in the static and dynamic conditions. Since the dual phase steel is extensively used in the outer body parts of the automotive vehicles, its dynamic strength and plastic strain energy absorption during the crash are essential. Dynamic strength of the dual phase steel is examined using the pendulum impact hammer tester machine. Spread of the plastic strain during the crash is an important factor for the energy absorption to passive safety, which is examined using the local hardness measurement using the Vickers hardness and local indentation yield strength is calculated using cylindrical indenter and obtained force-depth results are analysed using the Hencky theory for the plane strain indentation. Further, tested samples are observed using scanning electron microscopy for the fracture response after the static and dynamic tests.

scholarly journals Visualization of Plastic Strain Distribution in a Dual-Phase Steel Using High-Precision Grid-Markers

2012 ◽  
Vol 98 ◽  
pp. 303-310 ◽  
Author(s):  
Hidekazu Minami ◽  
Hiroshi Ikeda ◽  
Tatsuya Morikawa ◽  
Kenji Higashida ◽  
Tsuyoshi Mayama ◽  
...  
Keyword(s):  
Plastic Strain ◽  
High Precision ◽  
Strain Distribution ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Plastic Strain Distribution

scholarly journals Local plastic strain evolution in a high strength dual-phase steel

2010 ◽  
Vol 527 (18-19) ◽  
pp. 5026-5032 ◽  
Author(s):  
H. Ghadbeigi ◽  
C. Pinna ◽  
S. Celotto ◽  
J.R. Yates
Keyword(s):  
Plastic Strain ◽  
Dual Phase Steel ◽  
High Strength ◽  
Dual Phase ◽  
Local Plastic ◽  
Strain Evolution ◽  
Local Plastic Strain

scholarly journals Prediction of the Plastic Strain Ratio Evolution of a Dual-phase Steel

2015 ◽  
Vol 24 (6) ◽  
pp. 395-399
Author(s):  
J. Ha ◽  
J.W. Lee ◽  
M. G. Lee ◽  
F. Barlat ◽  
J. H. Kim
Keyword(s):  
Plastic Strain ◽  
Dual Phase Steel ◽  
Strain Ratio ◽  
Dual Phase ◽  
Plastic Strain Ratio

Energy Absorption Characteristics of Dual Phase Steel Tubes Under Static and Dynamic Loading

Strain ◽  
2009 ◽  
Vol 47 ◽  
pp. e387-e401 ◽  
Author(s):  
R. Velmurugan ◽  
R. Muralikannan ◽  
S. K. Malhotra ◽  
V. Sudharsan
Keyword(s):  
Energy Absorption ◽  
Dynamic Loading ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Steel Tubes ◽  
Static And Dynamic Loading ◽  
Absorption Characteristics

Experimental Researches on Nonlinear Strain Paths Forming for Dual Phase Steel

2014 ◽  
Vol 1004-1005 ◽  
pp. 209-213
Author(s):  
Li Bo Pan ◽  
Hong Chuan Zhu ◽  
Ze Hong Lei ◽  
Zhi Jian Zhang
Keyword(s):  
Plastic Strain ◽  
Dual Phase Steel ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Strain Diagram ◽  
Dual Phase ◽  
Effective Plastic Strain ◽  
Nonlinear Strain ◽  
Precise Tool ◽  
Strain Paths

Strain paths during sheet metal forming are always complex and nonlinear. Forming limit diagram (FLD) is a common method to determine failure in the past decades. However, it is only suitable for linear strain path condition. Regarding dual phase steel DP780, a special experiment was designed and carried out on Zwick Cupping equipment to get nonlinear strain paths. And the strain status was analyzed in FLD. It was found that FLD cannot predict failure precisely in this case. A new approach proposed by Stoughton and Yoon which based on polar effective plastic strain was introduced to analyze this nonlinear strain paths condition, the result is in good agreement with experiment, which indicated that Polar Effective Plastic Strain Diagram was an effective and precise tool to determine failure especially for complex nonlinear strain paths forming.

Sign in / Sign up

Export Citation Format

Share Document