Biaxial Deformation Experiments Over Multiple Strain Regimes

2009 ◽  
pp. 65-65-27
Author(s):  
MP Miller ◽  
DL McDowell
Keyword(s):  
Biaxial Deformation

Comparison of Substructures Between Uniaxial and Biaxial Deformation in 1100-0 Aluminum

1981 ◽  
Vol 39 ◽  
pp. 52-53
Author(s):  
D. L. Rohr ◽  
S. S. Hecker
Keyword(s):  
Plastic Strain ◽  
Cell Walls ◽  
Room Temperature ◽  
Mechanical Response ◽  
Biaxial Tension ◽  
Initial Deformation ◽  
Uniaxial Deformation ◽  
Biaxial Deformation ◽  
Stress States ◽  
Comprehensive Study

As part of a comprehensive study of microstructural and mechanical response of metals to uniaxial and biaxial deformations, the development of substructure in 1100 A1 has been studied over a range of plastic strain for two stress states.Specimens of 1100 aluminum annealed at 350 C were tested in uniaxial (UT) and balanced biaxial tension (BBT) at room temperature to different strain levels. The biaxial specimens were produced by the in-plane punch stretching technique. Areas of known strain levels were prepared for TEM by lapping followed by jet electropolishing. All specimens were examined in a JEOL 200B run at 150 and 200 kV within 24 to 36 hours after testing.The development of the substructure with deformation is shown in Fig. 1 for both stress states. Initial deformation produces dislocation tangles, which form cell walls by 10% uniaxial deformation, and start to recover to form subgrains by 25%. The results of several hundred measurements of cell/subgrain sizes by a linear intercept technique are presented in Table I.

scholarly journals Damage Evaluation for Perforated Sheets under Biaxial Deformation.

2002 ◽  
Vol 68 (667) ◽  
pp. 428-433 ◽  
Author(s):  
Shigeru NAGAKI ◽  
Katsutoshi SUMIYOSHI ◽  
Katsuyuki ABE
Keyword(s):  
Damage Evaluation ◽  
Biaxial Deformation ◽  
Perforated Sheets

Biaxial deformation and experimental study of PET at conditions applicable to stretch blow molding

2011 ◽  
Vol 52 (3) ◽  
pp. 671-688 ◽  
Author(s):  
G.H. Menary ◽  
C.W. Tan ◽  
E.M.A. Harkin-Jones ◽  
C.G. Armstrong ◽  
P.J. Martin
Keyword(s):  
Experimental Study ◽  
Blow Molding ◽  
Biaxial Deformation ◽  
Stretch Blow Molding

scholarly journals Molecular Simulation and Theoretical Analysis of Slide-Ring Gels under Biaxial Deformation

Gels ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 129
Author(s):  
Kotaro Tanahashi ◽  
Tsuyoshi Koga
Keyword(s):  
Theoretical Analysis ◽  
Molecular Mechanism ◽  
Elastic Properties ◽  
Mechanical Characteristics ◽  
Slip Model ◽  
Biaxial Deformation ◽  
New Type ◽  
Cross Links ◽  
Nonlinear Stretching ◽  
Stretching Effect

Slide-ring (SR) gels, a new type of gels that have cross-links moving along the chains, are known to have unique mechanical characteristics. In the case of biaxial deformations, it has been experimentally shown that the stress–strain (S–S) relationships of SR gels can be well described by the neo-Hookean (NH) model. This behavior is quite different from that of conventional chemical gels, where the S–S curves deviate from the NH model. To understand the molecular mechanism of such peculiar elastic properties of SR gels, we studied the effects of movable cross-links by using molecular simulations and theoretical analysis. We calculate the S–S relationships in biaxial deformation for two types of models: slip model, where the cross-links can slide along chains representing SR gels, and non-slip model, which corresponds to conventional chemical gels. In the theoretical analysis, we calculate the S–S relationships by using the models with the Gaussian and the Langevin chains to investigate the nonlinear stretching effect of the chain in the slip and non-slip models. As a result, we found that the peculiar elastic behaviors of SR gels in biaxial deformations are well explained by the effect of movable cross-links suppressing the nonlinear stretching of the chain.

Biaxial Deformation of a Polymer Network Measured via Deuteron Quadrupolar Interactions

2003 ◽  
Vol 36 (3) ◽  
pp. 724-735 ◽  
Author(s):  
P. T. Callaghan ◽  
E. T. Samulski
Keyword(s):  
Polymer Network ◽  
Biaxial Deformation
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