Crash Performance Evaluation of Hydro-formed DP-steel Tubes Considering Welding Heat Effects, Formability and Spring-back

2007 ◽  
Author(s):  
Kyung-Hwan Chung ◽  
Junehyung Kim ◽  
Wonoh Lee ◽  
Ji-Ho Lim ◽  
Chongmin Kim ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Spring Back ◽  
Steel Tubes ◽  
Dp Steel ◽  
Heat Effects ◽  
Crash Performance

scholarly journals Numerical Evaluation of Hydro-Formed DP-Steel Tubes on Crash-Performance with Welding Heat Effects

2012 ◽  
Vol 53 (5) ◽  
pp. 812-819 ◽  
Author(s):  
Junehyung Kim ◽  
Kyung-Hwan Chung ◽  
Wonoh Lee ◽  
Daeyong Kim
Keyword(s):  
Numerical Evaluation ◽  
Steel Tubes ◽  
Dp Steel ◽  
Heat Effects ◽  
Crash Performance

Computer Simulation of Hot Stamping Process of DP Steel Car Bumper Chain Based on Dynaform

2012 ◽  
Vol 178-181 ◽  
pp. 2877-2880
Author(s):  
Han Wu Liu ◽  
Zhao Hui Liu ◽  
Hui Xiao Li ◽  
Shao Bo Ping
Keyword(s):  
Metal Forming ◽  
Steel Plate ◽  
Hot Stamping ◽  
High Strength ◽  
Spring Back ◽  
Temperature Field Distribution ◽  
Dp Steel ◽  
Performance Requirements ◽  
Stamping Process ◽  
Duplex Steel

Owing to the advantages of weight loss and security, duplex steel plate has been the priority for the saloon car body instead of ordinary one among a majority of engine factories. While there are undesirable phenomena because of its high strength at normal temperature, such as its formability is worsened dramatically, and failure and fracture always occur in the stamping. So hot stamping process must be adopted to make the formability available. Based on the Bumper chain of Beijing Hyundai Reina and taken DP600 high strength steel as research object, this paper analyzes the distributions of stress, strain and thickness changes during the process of sheet metal forming by using eta/DYNAFORM software, simulates the spring-back quantity after hot stamping forming, and the numerical simulation of the temperature field distribution with time during stamping process was done. The result shows that duplex steel plate can meet the performance requirements of automotive chain forming, which offers theory basis for the production of such parts.

Crash performance evaluation of a new movable median guardrail on highways

2019 ◽  
Vol 182 ◽  
pp. 459-472 ◽  
Author(s):  
Jian Yang ◽  
Guoji Xu ◽  
C.S. Cai ◽  
A. Kareem
Keyword(s):  
Performance Evaluation ◽  
Crash Performance

Pyrolytic carbon filaments and associated catalytic particles formed in steel tubes

1984 ◽  
Vol 42 ◽  
pp. 662-663
Author(s):  
Y. L. Chen ◽  
J. R. Bradley
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Catalyst Particle ◽  
Pyrolytic Carbon ◽  
Plain Carbon Steel ◽  
304 Stainless Steel ◽  
Hydrocarbon Gases ◽  
Steel Tubes ◽  
Filamentous Carbon ◽  
Carbon Filaments

Considerable effort has been directed toward an improved understanding of the production of the strong and stiff ∼ 1-20 μm diameter pyrolytic carbon fibers of the type reported by Koyama and, more recently, by Tibbetts. These macroscopic fibers are produced when pyrolytic carbon filaments (∼ 0.1 μm or less in diameter) are thickened by deposition of carbon during thermal decomposition of hydrocarbon gases. Each such precursor filament normally lengthens in association with an attached catalyst particle. The subject of filamentous carbon formation and much of the work on characterization of the catalyst particles have been reviewed thoroughly by Baker and Harris. However, identification of the catalyst particles remains a problem of continuing interest. The purpose of this work was to characterize the microstructure of the pyrolytic carbon filaments and the catalyst particles formed inside stainless steel and plain carbon steel tubes. For the present study, natural gas (∼; 97 % methane) was passed through type 304 stainless steel and SAE 1020 plain carbon steel tubes at 1240°K.

Fine Particle Mass Monitoring with Low-Cost Sensors: Corrections and Long-Term Performance Evaluation

2019 ◽  
Author(s):  
Carl Malings ◽  
Rebecca Tanzer ◽  
Aliaksei Hauryliuk ◽  
Provat K. Saha ◽  
Allen L. Robinson ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Fine Particle ◽  
Low Cost ◽  
Particle Mass ◽  
Long Term Performance ◽  
Term Performance
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