38. Importance of Ductility
Ductility is a vital material property that enables structures to absorb energy and undergo plastic deformation without sudden failure, especially under seismic loads. It plays a crucial role in seismic design, distinguishing between structures that sustain and those that collapse during earthquakes. The emphasis on ductility enhances energy dissipation and redistributes forces, allowing for safer evacuation during seismic events.
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What we have learnt
- Ductility is the ability of a structure to undergo significant plastic deformation before failure.
- Seismic design codes prioritize ductility to mitigate sudden structural failure during earthquakes.
- Ductile failure is preferred over brittle failure for enhanced safety and warning before collapse.
Key Concepts
- -- Ductility
- The ability of a material or structure to undergo large plastic deformations without fracturing.
- -- Ductility Ratio
- Measured as the ultimate displacement divided by yield displacement, indicating how much deformation a structure can undergo beyond the elastic limit.
- -- Energy Dissipation
- The capacity of a structure to absorb and dissipate the energy imparted by seismic forces.
- -- Capacity Design
- A design approach that ensures structures yield in a ductile manner to avoid brittle failures.
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