Effect of Strain Rate and Temperature on Deformation Properties in Polypropylene.

Ariyama, Takashi; Yasunari, Mori; Kaneko, Kenji

doi:10.1299/kikaia.62.781

Cited by 1 publication

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“…It has been confirmed that constitutive relations based on the overstress model give good predictions on simple tensile, compressive, and torsional loading properties for many kinds of polymers 1,2,4,6,8 . log K is linear to the overstress X for polypropylene and is expressed in Eqn (5), where K 1 means a gradient and K 2 a section value cut by X-axis coordinate of the approximated line shown in Fig.…”

Section: Materials Constants Based On Overstress Constitutive Modelmentioning

confidence: 73%

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Inelastic Deformation Behaviour of Polypropylene in Large Strain Region and after Cyclic Preloadings

Kaneko

2008

DSJ

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Inelastic deformation behaviour of polypropylene in tensile large strain region and after axial pre-cyclings is investigated experimentally and analysed using the three-element model based on the overstress theory. In this experiment, cylindrical tubular specimen as well as solid bar specimen are used for torsional loading and volume change is measured to get the true stress-true strain curves. It is found that flow stress is almost constant in strain range of more than 0.1, Poissons ratio varies depending on strains and the viscosity does not change even after cyclic preloadings in tension, torsion, and compression. The quasi-static stress-strain curve g is represented as a function of temperature. Good agreement can be obtained between predicted results based on obtained constitutive equations having the first invariant of stress (static pressure) effect and the experimental results on both the flow stress and relaxation.

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Section: Materials Constants Based On Overstress Constitutive Modelmentioning

confidence: 73%

“…Many studies [1][2][3][4][5][6][7][8] were reported on deformation properties of PP in simple loading as tension, compression, and torsion, but in most of the reports, nominal stress-strain curves were obtained and Poisson ratio was assumed to be 0.5.…”

Section: Introductionmentioning

confidence: 99%

Inelastic Deformation Behaviour of Polypropylene in Large Strain Region and after Cyclic Preloadings

Kaneko

2008

DSJ

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Effect of Strain Rate and Temperature on Deformation Properties in Polypropylene.

Cited by 1 publication

References 0 publications

Inelastic Deformation Behaviour of Polypropylene in Large Strain Region and after Cyclic Preloadings

Inelastic Deformation Behaviour of Polypropylene in Large Strain Region and after Cyclic Preloadings

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