Stress- and strain-controlled cyclic deformation of polypropylene

Drozdov, Aleksey D.

doi:10.1016/j.commatsci.2012.02.035

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…Although ratcheting has been much investigated, its modelling remains a very difficult problem in mechanics of materials. There are several experimental and numerical studies that have been done on the ratcheting behaviour of polymers and its effects on fatigue life . Tao and Xia experimentally studied the behaviour of an epoxy resin and its effect on fatigue life.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of biaxial ratcheting behaviour of ultrahigh-molecular-weight polyethylene with viscoplasticity theory based on overstress for polymers

Çolak

Asmaz

2015

Polym. Int.

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Biaxial ratcheting behaviour of ultrahigh-molecular-weight polyethylene (UHMWPE) has been modelled using the viscoplasticity theory based on overstress for polymers (VBOP) with the modified Chaboche kinematic hardening rule. Investigated loading condition is: axial strain-controlled cyclic loading of thin-walled tubular specimen in the presence of constant pressure. To improve the circumferential strain ratcheting response of UHMWPE, changes designed to account for kinematic hardening and tangent modulus effects are proposed. Numerical results are compared with previously obtained experimental data. It is shown that modified tangent modulus improves the model responses. The biaxial ratcheting behaviour of UHMWPE is modelled quantitatively with VBOP.

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Section: Introductionmentioning

confidence: 99%

“…Drozdov studied cyclic viscoelastoplastic behaviour of isotactic polypropylene. By numerical simulation, it was shown that the cause of fatigue failure in ratcheting tests is the growth of plastic strain in crystallites.…”

Section: Introductionmentioning

confidence: 99%

Modelling of biaxial ratcheting behaviour of ultrahigh-molecular-weight polyethylene with viscoplasticity theory based on overstress for polymers

Çolak

Asmaz

2015

Polym. Int.

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“…The crystalline domain and amorphous domain are considered separately in the Mullins effect. The Mullins effect has been successfully analyzed for many semicrystalline polymers and their composites . Hong and Strobl thought that the chains in the amorphous regions of semicrystalline polymers are entangled and form a network which acts together with the skeleton of lamellar crystallites to hold the applied force .…”

Section: Introductionmentioning

confidence: 99%

Network alteration theory on Mullins effect in semicrystalline polymers

Wang

Shen

et al. 2014

Polym. Int.

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Three semicrystalline polymers with different molecular structure and crystallinity were investigated to analyze the Mullins effect therein. The polymers exhibited time-dependent stress resistance and stress softening. Recoverable network alteration in both crystalline and amorphous domains was proposed to explain the cyclic loading deformation and relaxation. The crystallites and the entanglements acted as the joints in the network where stress was transferred. The maximum stress first rapidly decreased and the balance stress was reached after ca 50 cycles. The balance stress was higher than the quasi-static stress obtained by normal stress relaxation. However, the balance stress could be eliminated by the following stress relaxation and the residual stress was very close to the quasi-static stress. The different network strength between the strain before and after yielding is also discussed by comparing the balance stress and the quasi-static stress. The stress resistance of the network before yielding was stronger than that after yielding mainly due to crystallite slip.

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A viscoelastic constitutive modeling of rubber-like materials with the Payne effect

Pan

Zhong

2017

Applied Mathematical Modelling

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Stress- and strain-controlled cyclic deformation of polypropylene

Cited by 5 publications

References 7 publications

Modelling of biaxial ratcheting behaviour of ultrahigh-molecular-weight polyethylene with viscoplasticity theory based on overstress for polymers

Modelling of biaxial ratcheting behaviour of ultrahigh-molecular-weight polyethylene with viscoplasticity theory based on overstress for polymers

Network alteration theory on Mullins effect in semicrystalline polymers

A viscoelastic constitutive modeling of rubber-like materials with the Payne effect

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