Geometric modelling of elastic and elastic-plastic solids by separation of deformation energy and Prandtl operators

Šeruga, Domen; Kosmas, Odysseas; Jivkov, Andrey P.

doi:10.1016/j.ijsolstr.2020.04.019

Cited by 4 publications

(2 citation statements)

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“…Therefore, the energy method is used to determine the equivalent elastic modulus of strain energy of engineering plastics to reduce the error of material deformation parameters. 20 Based on the tensile stress-strain curve obtained from the test, the total strain energy of the curve, W x is calculated from Equation 3, and assuming that the strain energy of the stress-strain curve during the stretching of engineering plastics is linear, this linear strain energy W ε at the yield point, the equivalent elastic modulus E e can be obtained from:…”

Section: Test Equipment and Methodsmentioning

confidence: 99%

“…The choice of tangential elastic modulus or cutline elastic modulus in the computational analysis or finite element simulation analysis can cause a large impact on the prediction of material deformation. Therefore, the energy method is used to determine the equivalent elastic modulus of strain energy of engineering plastics to reduce the error of material deformation parameters 20 . Based on the tensile stress–strain curve obtained from the test, the total strain energy of the curve, W x is calculated from Equation , and assuming that the strain energy of the stress‐strain curve during the stretching of engineering plastics is linear, this linear strain energy W ε at the yield point, the equivalent elastic modulus E e can be obtained from:

W_{x} = \int_{0}^{ε_{1}} σ (ε) dε

W_{ε} = \frac{σ_{1} ε_{1}}{2} = \frac{E_{e} ε_{1}^{2}}{2}

E_{e} = \frac{2 W_{ε}}{ε_{1}^{2}}

where: σ 1 is the yield strength of engineering plastics; ε 1 is the yield strain of engineering plastics.…”

Section: Mechanical Properties Test and Analysis Of Different Filler ...mentioning

confidence: 99%

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Study on the mechanical, friction and wear properties of modified polyoxymethylene under free abrasive condition

Gao

Chang

et al. 2023

J of Applied Polymer Sci

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The mechanical, friction and wear properties of different modified polyoxymethylene (POM) are presented in the paper under free abrasive grinding condition. The shore hardness and elastic modulus of the POM matrix increased with carbon fiber (CF) filling, its shore hardness and elastic modulus were 85 HD and 5000 MPa, respectively. The hardness and elastic modulus of the POM matrix decreased with polytetrafluoroethylene (PTFE) and graphite (C) filling. The average coefficient of friction of POM was 0.254. When PTFE, CF, and graphite were added, the coefficient of friction of the POM would be reduced under free abrasive condition. The coefficient of friction of POM filled with PTFE or graphite was about 0.15, the coefficient of friction of POM filled with CF was about 0.18. It could be seen from the orthogonal test analysis that the wear resistance of four types of materials was CF‐POM > POM > PTFE‐POM > C‐POM. When the test duration was 1.5 h, the wear amount of C‐POM was between 3 and 9 mg, the wear amount of CF‐POM was less than 1.23 mg. The speed and load were the main factors affecting the wear amount of these materials, followed by the abrasive particle diameter, and the abrasive mass fraction had the least effect on them.

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Section: Test Equipment and Methodsmentioning

confidence: 99%