What is creep and what are its characteristics?
Understand the Problem
The question discusses the phenomenon of creep in materials, specifically concrete. It highlights its definition and characteristics, focusing on the continuous deformation under sustained load.
Answer
Creep is the continuous deformation of materials under sustained load, with key characteristics including significant deformation over time, proportionality to load intensity, and irreversible plastic deformation.
Creep is the continuous deformation of a material under sustained load below its yield strength. It often occurs at elevated temperatures. Characteristics include: 1) Final deformation can be 3-4 times the short-term elastic deformation. 2) Deformation is proportional to load intensity and inversely to material strength. 3) Only elastic deformation recovers when load is removed. 4) Redistribution of internal stress occurs.
Answer for screen readers
Creep is the continuous deformation of a material under sustained load below its yield strength. It often occurs at elevated temperatures. Characteristics include: 1) Final deformation can be 3-4 times the short-term elastic deformation. 2) Deformation is proportional to load intensity and inversely to material strength. 3) Only elastic deformation recovers when load is removed. 4) Redistribution of internal stress occurs.
More Information
Creep can lead to material failure if not managed properly. It's a vital consideration in engineering, particularly for materials used in high-temperature environments.
Tips
Common mistakes include neglecting long-term deformation effects and thinking that all deformation is elastic and fully recoverable.
Sources
- Creep - Wikipedia - en.wikipedia.org
- Creep (deformation) - WVU - web.statler.wvu.edu
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