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Steel Structures Design quizzes

How steel beams, columns and connections work together to carry loads safely, and why stability matters.

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Steel Structures Design: Structural steel properties and sections · Stress-Strain Behavior and Mechanical Properties

How structural steel stretches, yields, hardens and breaks, and which material properties engineers rely on when designing with it.
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From Steel Structures Design: Structural steel properties and sections · Stress-Strain Behavior and Mechanical Properties

After the yield plateau, why does the stress in a steel tension test start rising again?

The specimen cools and becomes stiffer
Its cross-section grows under the load
The metal strain hardens as it deforms

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Answer: The metal strain hardens as it deforms

Plastic deformation multiplies and tangles dislocations in the crystal lattice, so more stress is needed to keep deforming: this is strain hardening.

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