Tension and Compression of Electrorheological Fluid

✍ Scribed by Fuqian Yang

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 134 KB
• Volume: 192
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4993

✦ Synopsis

to shear strain, the chains rupture above some critical strain.

Using the electrostatic polarization model and Hertzian con-After the rupture the chains immediately swing back until tact theory, the tensile and compressive behaviors of dilute eleceach is grabbed by another chain. At low shear rates, the trorheological fluids between two parallel electrodes are prerupture and reformation of chains are slowly repeated to sented. It is shown that the load increases nonlinearly with produce a constant shear stress. By analyzing the deformadecreasing distance of the two electrodes and is a linear function tion of chains of single-particle width and equal spacing, of the elastic modulus of dielectric particles. This qualitatively Marshall et al. (16) derived a Bingham constitutive equation explains the rheopectic effect of electrorheological fluids under of ER fluids. compressive loading.