A new constitutive equation on ice materials

Rheological constitutive equation for a model of soft glassy materials

We solve exactly and describe in detail a simplified scalar model for the low frequency shear rheology of foams, emulsions, slurries, etc. @P. Sollich, F. Lequeux, P. Hébraud, and M. E. Cates, Phys. Rev. Lett. 78, 2020 ~1997!#. The model attributes similarities in the rheology of such ‘‘soft glassy materials’’ to the shared features of structural disorder and metastability. By focusing on the d...

On constitutive equations for electrorheological materials

Constitutive equations for electrorheological (ER) fluids have been based on experimental results for steady shearing flows and constant electric fields. The fluids have been modeled as being rigid until a yield stress is reached. Additional stress is then proportional to the shear rate. Recent experimental results indicate that ER materials have a regime of solid-like response when deformed fr...

A New Vapor Pressure Equation

The Wagner equation for prediction of vapor pressure has been modified in order to improve it accuracy. On the basis of this modifications, development of a new equation for prediction of vapor pressure is outlined. Examples of the use of the equation for obtaining vapor pressure for a total of 94 pure substance are given. The proposed equation combines simplicity and accuracy and performs as w...

Constitutive Equation Gap

Materials Testing for Constitutive relations

High suain rate tests have been carried out at both room temperature and 100°C on a Ti6A14V alloy using the torsional split Hopkinson pressure bar. An infrared radiometer has been developed to measure the surface temperature of the specimen during the high speed torsional test. Data have been obtained on the variation of stress with strain and strain rate at shear strain rates from 0.0007s" to ...