Rheology ·Rheology TXUTO [Greek rheos -"to flow"]is the study of deformation and flow of matter ·Name was coined by Dr. Marcus reiner instead of the more obscure “continuum mechanics' Motto of the Society of Rheology:“Panta Rhei'”or l “everything flows'” after Heraclitus
Rheology • Rheology [Greek rheos - “to flow”] is the study of deformation and flow of matter • Name was coined by Dr. Marcus Reiner instead of the more obscure “continuum mechanics” • Motto of the Society of Rheology:“Panta Rhei” or “everything flows” - after Heraclitus
Solid and Liquids Solids Elastic:Materials that can support a applied stress Liquids -Viscous:Materials that can not support an applied stress (that is they flow under stress)
Solid and Liquids • Solids - Elastic: Materials that can support a applied stress • Liquids - Viscous: Materials that can not support an applied stress (that is they flow under stress)
Pie Liquid Semi-Solid Solid
Pie Liquid Semi-Solid Solid
Units of Measure ·Force (Newton) ·Distance(meter) 。Time(second or derived measures Stress (N/m2 or Pascals) ·Velocity(m/s)
Units of Measure • Force (Newton) • Distance (meter) • Time (second) or derived measures • Stress (N/m2 or Pascals) • Velocity (m/s)
Forces and Stresses Compression Tensile Shear
Forces and Stresses Compression Tensile Shear