What are the sources of Ductility for structures What is more du.pdf
- 1. What are the sources of Ductility for structures? What is more ductile indeterminate or determinate structures? What are the sources of Ductility for structures? What is more ductile indeterminate or determinate structures? Solution Ductility is a measure of a material's ability to undergo significant plastic deformation before rupture, which may be expressed as percent elongation or percent area reduction from a tensile test Sources of Ductility for structures High degrees of ductility occur due to metallic bonds, which are found predominantly in metals and leads to the common perception that metals are ductile in general. In metallic bonds valence shell electrons are delocalized and shared between many atoms. The delocalized electrons allow metal atoms to slide past one another without being subjected to strong repulsive forces that would cause other materials to shatter. Statically indeterminate structures are over-restrained in the sense that there are more force unknowns than available equilibrium equations. This situation happens when: In other words, Indeterminate structures have more members and/or support reactions than required for static stability. The advantages of statically indeterminate structures over determinate structures include the following: Therefore,determinate structures is more ductile.