Help What happens in a fully plastic condition in plastic analysis steel

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what happens in a fully plastic condition in plastic analysis steel

 

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In plastic analysis steel design, a structure is analyzed to determine its strength and deformation capacity in the plastic range. A fully plastic condition means that the structure has reached its ultimate strength and has started to undergo large deformations without any increase in load.

In this condition, the steel material has yielded and undergone significant strain hardening, which means that the material strength has increased due to plastic deformation. The yield strength of the material has been exceeded, and the structure is now in the plastic range.

In fully plastic condition, the structure can still carry its design load without any increase in stress, but it undergoes large deformations. This condition is often used in the design of ductile structures, such as earthquake-resistant buildings, to ensure that the structure can withstand significant deformations without failure.

The design process for a fully plastic condition involves determining the plastic moment capacity of the structure and comparing it to the applied moment. This allows the engineer to determine if the structure will undergo significant deformations without failure when subjected to its design load. Overall, designing a structure to reach a fully plastic condition can enhance its ductility and make it more resistant to extreme loading scenarios.