The exhaustive list of topics in Soil Dynamics in which we provide Help with Homework Assignment and Help with Project is as follows:
- Scope and objective; Nature and types of dynamic loading; Importance of soil dynamics.
- Viberation Theory:
- Vibration of elementary systems
- Degrees of freedom (SDOF and MDOF systems)
- Equation of motion for SDOF system
- Types of vibrations
- Earthquake excitation
- Undamped and damped free vibrations
- Torsional vibration
- Critical damping
- Decay of motion
- Undamped and damped forced vibration
- Constant force and rotating mass oscillators
- Dynamic magnification factor
- Transmissibility ratio
- Non-harmonic
- Arbitrary
- Impact and other types of forced vibrations
- Duhamel’s integral
- Taxing of vehicles on uneven roads
- Vibration isolation
- Vibration measuring instruments
- Equation of motion for MDOF system.
- Wave Propagation:
- Longitudinal and torsional waves in infinitely long rod
- Solution for one-dimensional and three-dimensional equations of motion
- Waves in semi-infinite body
- Waves in layered medium
- Earthquake waves
- P-wave
- S-wave
- Rayleigh wave and Love wave
- Locating earthquake's epicenter.
- Dynamic Soil Properties:
- Stresses in soil element
- Determination of dynamic soil properties
- Field tests
- Laboratory tests
- Model tests
- Stress-strain behavior of cyclically loaded soils
- Estimation of shear modulus
- Modulus reduction curve
- Damping ratio
- Linear
- Equivalent-linear and non-linear models
- Ranges and applications of dynamic soil tests
- Cyclic plate load test
- Liquefaction
- Screening and estimation of liquefaction
- Simplified procedure for liquefaction estimation
- Factor of safety
- Cyclic stress ratio
- Cyclic resistance ratio
- CRR correlations with SPT
- CPT
- SASW test values.
- Machine Foundations
- Types of machines
- Basic design criteria
- Methods of analysis
- Mass-Spring-Dashpot model
- Elastic-Half-Space theory
- Tschebotarioff’s reduced natural frequency method
- Types of foundations
- Modes of vibrations
- Vertical
- Sliding
- Torsional (yawing) and rocking (and pitching) modes of oscillations
- Design guidelines as per codes
- Typical design problems.
- Soil Improvement Techniques:
- Concept of soil improvement due to dynamic loading
- Various methods
- Mitigation of liquefaction.
- Dynamic Soil-Structure Interaction:
- Dynamic earth pressures
- Force and displacement based analysis
- Pseudo-static and Pseudo-dynamic analysis
- Guidelines of various design codes
- Dynamic analyses of various geotechnical structures like retaining wall
- Soil slope
- Railway subgrade and ballast using MSD model.