2. Concept of Inertia and Damping
Inertia and damping are essential concepts in earthquake engineering that influence the seismic response of structures. Inertia refers to a mass's resistance to changes in its motion, while damping is the mechanism for dissipating energy in vibrating systems. Both principles are critical in dynamic analysis and design for earthquake resistance, affecting how structures respond during seismic events.
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What we have learnt
- Inertia represents the resistance of a mass to acceleration due to external forces.
- Damping dissipates vibrational energy in structures to prevent indefinite oscillation.
- Various damping models and devices enhance structural resilience against earthquakes.
Key Concepts
- -- Inertia
- A fundamental property of matter resisting changes in state of motion, described by Newton's First Law.
- -- Damping
- The mechanism by which vibrational energy is dissipated, preventing sustained oscillation of structures.
- -- Damping Ratio
- A non-dimensional quantity that measures the level of damping in a system, critical for evaluating structural response.
- -- Free Vibration
- The motion of a structure after being disturbed, without any external forces acting on it.
- -- Forced Vibration
- The response of a structure when subjected to external forces, leading to transient and steady-state vibrations.
- -- Tuned Mass Damper (TMD)
- A device designed to reduce vibrations in a structure by creating an out-of-phase motion with the main structure.
- -- Smart Damping Systems
- Advanced systems that adjust their damping properties in real-time based on sensor feedback.
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