Types of Energy Fields Particles react differently in various energy - - PowerPoint PPT Presentation

Types of Energy Fields

Mechanical Energy Field (K.E. and P.E.) Particles react differently in various energy fields Surface force & Body force (Gravity) Thermal Energy Field Electrical Energy Field Magnetic Energy Field Radiation Energy Field Long-term interaction

Types of Energy Fields

Mechanical Energy Field (K.E. and P.E.) Particles react differently in various energy fields Most widely used in Geotechnical Engg. Surface force & Body force (Gravity)

Loading of soil mass results in high density & low volume (combination of K.E., P.E., Thermal Energy (friction between particles), Sound & Light Energies----due to crushing of grains) Total Energy of the soil mass changes (i.e. change in orientation of soil particles) Compression of gases in voids, more dissolution of gases in pore solution elastic strains of soil grains, characteristics of double layer

Mechanical Energy Field Potential Energy (Position) and Kinetic Energy (Motion) Potential Energy is stored within a physical system. Can be released or converted into other forms of energy, say Kinetic Energy. Types of PE: (each is associated with a particular kind of force).

Elastic force is Elastic Potential Energy. Gravitational force is Gravitational Potential Energy Coulomb force is Electric Potential Energy Nuclear force is Nuclear Potential Energy

Potential Energy Compaction Consolidation Distortion Bending & Crushing Kinetic Energy

Bending Crushing

Potential Energy Compaction Consolidation Distortion Bending & Crushing Kneading Shearing Kinetic Energy Movement of water through porous media Vibration

Mechanical Energy Field

• All short term processes
• Ignore influence of the Environment

Load, Deformation, Velocity, Weight, Mass, Wave, Sound Foundation design Flow through porous media Acid rains Toxic/Hazardous wastes Nuclear waste storage/containment Land slides Earthquakes Governing Laws

• Darcy’s
• Hook’s
• Newton’s
• Law of motion