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58 048 (0,245s)

Result

Investigation of the predictive capability of advanced differential constitutive equations for polymer melts ...

The predictive capabilities of three models (modified White-Metzner model, eXtended Pom-Pom model and newly proposed modification of the Leonov model) are tested for steady shear and uniaxial extensional flows of LDPE, mLLDPE and PVB melts....

CD - Makromolekulární chemie

  • 2003
  • D
Result

Novel Trends in Rheology VII

The meeting has captured recent development in areas of constitutive equations for polymer melts, non-Newtonian fluid mechanics and stability, novel rheological techniques, rheology of polymers/composites/...

Polymer science

  • 2017
  • M
Result

Viscoelastic Constitutive Equations in Modeling of Polymer Processing

The work concentrates on the description and applications of the most realistic constitutive equations for polymer melts, which can be used in complicated non-isothermal modeling with an aim to correlate calculated...

CD - Makromolekulární chemie

  • 2000
  • C
Result

Frame-invariant formulation of novel generalized Newtonian fluid constitutive equation for polymer melts

In this work, the frame-invariant formulation of a new generalized Newtonian fluid (GNF) constitutive equation is proposed. Viscosity is considered as a specific function of the second and third invariant of the strain rate tensor a...

Polymer science

  • 2020
  • Jimp
  • Link
Result

Investigation of the predictive/fitting capabilities of the molecular based constitutive equations for polymer melts

Predictive/fitting capabilities of the XPP and PTT-XPP constitutive equations are compared in both shear and uniaxial elongational flows using two LDPE materials (Escorene LD 165 BW1 and Bralen RB 0323). Linear viscoelastic properti...

BK - Mechanika tekutin

  • 2005
  • D
Result

Application of the XPP, PTT-XPP and modified Leonov constitutive equations to branched LDPE melts

Differential constitutive equations represent a powerful tool for a prediction of the basic rheological properties of polymer melts. With the aim to understand more thoroughly the behaviour and possible differences...

BK - Mechanika tekutin

  • 2006
  • D
Result

Novel Trends in Rheology VIII

The meeting has captured recent development in areas of constitutive equations for polymer melts, non-Newtonian fluid mechanics and stability, novel rheological techniques, rheology of polymers/composites/...

Polymer science

  • 2019
  • M
Result

Rheological characterisation of LDPE materials by means of differential constitutive equations

For rheological description of branched LDPE melts (Escorene LD165BW1 a Bralen RB0323) the following differential constitutive equations were used: eXtended Pom-Pom, Phan Thien-Tanner-XPP, and modified Leonov models. There ...

BK - Mechanika tekutin

  • 2007
  • D
Result

On the predictive/fitting capabilities of the advanced differential constitutive equations for branched LDPE melts

Predictive/fitting capabilities of the XPP, PTT-XPP and modified Leonov constitutive equations are compared in both steady as well as transient shear and uniaxial elongational flows using two, highly branched LDPE materials (Escoren...

BK - Mechanika tekutin

  • 2006
  • Jx
Result

Investigation of Advanced Differential Constitutive Equations under Shear and Extensional Flows

The predictive capabilities of three models (eXtended Pom-Pom, PTT- XPP and modified Leonov model) are tested for both, steady as well as transient shear and uniaxial extensional flows of LDPE....

CD - Makromolekulární chemie

  • 2006
  • D
  • 1 - 10 out of 58 048