Multiaxial tube expansion test method for measurement of sheet metal deformation behavior under biaxial tension for a large strain range

2013 ◽  
Vol 45 ◽  
pp. 103-118 ◽  
Author(s):  
Toshihiko Kuwabara ◽  
Fuminori Sugawara
Keyword(s):  
Sheet Metal ◽  
Deformation Behavior ◽  
Biaxial Tension ◽  
Large Strain ◽  
Strain Range ◽  
Test Method ◽  
Expansion Test ◽  
Metal Deformation ◽  
Tube Expansion

Characterization of yield stress surface and strain-rate potential for tubular materials using multiaxial tube expansion test method

2020 ◽  
Vol 133 ◽  
pp. 102838
Author(s):  
Sobhan Alah Nazari Tiji ◽  
Taejoon Park ◽  
Amir Asgharzadeh ◽  
Hyunki Kim ◽  
Madhura Athale ◽  
...  
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Test Method ◽  
Expansion Test ◽  
Stress Surface ◽  
Tube Expansion

Stress Analysis of Sheet Metal Vibration Incremental Forming

2010 ◽  
Vol 154-155 ◽  
pp. 166-170
Author(s):  
Gai Pin Cai ◽  
Ning Yuan Zhu ◽  
Na Wen
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Low Frequency ◽  
Forming Process ◽  
Technical Parameters ◽  
Vibration Technique ◽  
Low Frequency Vibration ◽  
Metal Deformation ◽  
Angle Effect ◽  
Forming Angle

As a non-homogenous force stresses during incremental forming, sheet metal easily tended to instability, and some defects, such as deposition, wrinkle and fracture, would appear. If the vibration technique was combined the incremental forming process, its deformation mechanism would be different from that of the old process, and sheet metal deformation quality was also risen. Then some mechanical equations were built by force analyzed on element in local contact zone of die head forcing down. According to reasonable hypothesis and simplified, the equations were solved. Some stress-time curves of the element were obtained by given process parameters, vibrational parameters and time parameters. It is shown from analysis that stress variety of the element is closely related to amplitude, frequency and forming angle, effect of sheet metal vibration incremental forming with high frequency vibration is more superior than that of with low frequency vibration; only when vibrational parameters are reasonably matching technical parameters, the effective vibration incremental forming can be obtained.

Effect of the Friction Coefficient on Large Strain Extrusion Machining

2013 ◽  
Vol 273 ◽  
pp. 138-142 ◽  
Author(s):  
Ping Lin ◽  
Zi Chun Xie ◽  
Qing Li
Keyword(s):  
Finite Element ◽  
Friction Coefficient ◽  
Nanostructured Materials ◽  
Deformation Behavior ◽  
Large Strain ◽  
Effective Strain ◽  
Finite Element Simulations ◽  
Friction Coefficients ◽  
Simulation Results

The present study focused on the influence of the friction coefficient on the deformation behavior in large strain extrusion machining (LSEM). A series of simulation results of effective strain were obtained under different friction coefficients by conducting finite element simulations with a FEM code. The results show that LSEM can produce different effective strains by changing the friction coefficients, thus enabling the fabrication of bulk nanostructured materials. An analysis of the variation of effective strain through the chip demonstrated that the chip deformed much more inhomogeneously when the friction coefficient became larger. The obtained results can offer valuable guidelines for later LSEM studies.

Sign in / Sign up

Export Citation Format

Share Document