Search results
Results from the WOW.Com Content Network
The generalized Maxwell model also known as the Maxwell–Wiechert model (after James Clerk Maxwell and E Wiechert [1] [2]) is the most general form of the linear model for viscoelasticity. In this model, several Maxwell elements are assembled in parallel.
A Maxwell material is the most simple model viscoelastic material showing properties of a typical liquid. It shows viscous flow on the long timescale, but additional elastic resistance to fast deformations. [1] It is named for James Clerk Maxwell who proposed the model in 1867. [2] [3] It is also known as a Maxwell fluid
Schematic of Maxwell-Wiechert Model. The generalized Maxwell model, also known as the Wiechert model, is the most general form of the linear model for viscoelasticity. It takes into account that the relaxation does not occur at a single time, but at a distribution of times. Due to molecular segments of different lengths with shorter ones ...
A Kelvin–Voigt material, also called a Voigt material, is the most simple model viscoelastic material showing typical rubbery properties. It is purely elastic on long timescales (slow deformation), but shows additional resistance to fast deformation.
The model was proposed by James G. Oldroyd. The concept is named after James Clerk Maxwell. It is the simplest observer independent constitutive equation for viscoelasticity and further is able to reproduce first normal stresses. Thus, it constitutes one of the most fundamental models for rheology. The model can be written as:
Schematic diagram of Burgers material, Maxwell representation Given that one Maxwell material has an elasticity E 1 {\displaystyle E_{1}} and viscosity η 1 {\displaystyle \eta _{1}} , and the other Maxwell material has an elasticity E 2 {\displaystyle E_{2}} and viscosity η 2 {\displaystyle \eta _{2}} , the Burgers model has the constitutive ...
1860 – James Clerk Maxwell introduces the Maxwell distribution of velocity of classical gas molecules. 1863 –Hermann von Helmholtz publishes Sensations of Tone on the physics of sound perception. 1864 – August Toepler invents Schlieren photography. 1865 – Lord Kelvin introduces the Kelvin material model for viscoelasticity. [33]
The simplest model of the dense fluid viscosity is a (truncated) power series of reduced mole density or pressure. Jossi et al. (1962) [14] presented such a model based on reduced mole density, but its most widespread form is the version proposed by Lohrenz et al. (1964) [15] which is displayed below.