A ductile structure is defined as one for which the plastic deformation before fracture
- AIs smaller than the elastic deformation
- BVanishes
- CIs equal to the elastic deformation
- DIs much larger than the elastic deformationCorrect
Solution
Concept
Definition of ductility
Step-by-step solution
1. A ductile material shows large plastic deformation before fracture. 2. The plastic deformation is much larger than the elastic deformation.
Explanation
Ductile structures give warning before failure by undergoing large permanent deformation. Brittle materials fail with little or no plastic deformation.
Shortcut
Ductile = plastic ≫ elastic. Brittle = plastic ≈ 0.
Correct answer: D) Is much larger than the elastic deformation