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- Q7533418 subject Q7731439.
- Q7533418 subject Q8762241.
- Q7533418 abstract "According to the classical theories of elastic or plastic structures made from a material with non-random strength (ft), the nominal strength (σN) of a structure is independent of the structure size (D) when geometrically similar structures are considered. Any deviation from this property is called the size effect. For example, conventional strength of materials predicts that a large beam and a tiny beam will fail at the same stress if they are made of the same material. In the real world, because of size effects, a larger beam will fail at a lower stress than a smaller beam.The structural size effect concerns structures made of the same material, with the same microstructure. It must be distinguished from the size effect of material inhomogeneities, particularly the Hall-Petch effect, which describes how the material strength increases with decreasing grain size in polycrystalline metals.The size effect can have two causes: statistical, due to material strength randomness, and energetic (and non-statistical), due to energy release when a large crack or a large fracture process zone (FPZ) containing damaged material develops before the maximum load is reached.The limitations of elasticity theory are discussed in good textbooks on the topic. The same holds for plasticity theory. Modern computational models do not have these limitations and they predict structural strength correctly for any size. The scientists that develop new material models make sure that the results agree with the size effect laws. The engineers that design exceptionally large structures make sure that the calculations do not include a size effect mistake.".
- Q7533418 thumbnail Malpasset-1988.jpg?width=300.
- Q7533418 wikiPageWikiLink Q1072476.
- Q7533418 wikiPageWikiLink Q11426.
- Q7533418 wikiPageWikiLink Q1498213.
- Q7533418 wikiPageWikiLink Q16702447.
- Q7533418 wikiPageWikiLink Q17007532.
- Q7533418 wikiPageWikiLink Q176640.
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- Q7533418 wikiPageWikiLink Q240553.
- Q7533418 wikiPageWikiLink Q264845.
- Q7533418 wikiPageWikiLink Q466491.
- Q7533418 wikiPageWikiLink Q472074.
- Q7533418 wikiPageWikiLink Q6142056.
- Q7533418 wikiPageWikiLink Q62932.
- Q7533418 wikiPageWikiLink Q6671777.
- Q7533418 wikiPageWikiLink Q7310310.
- Q7533418 wikiPageWikiLink Q7314248.
- Q7533418 wikiPageWikiLink Q7731439.
- Q7533418 wikiPageWikiLink Q8762241.
- Q7533418 wikiPageWikiLink Q899604.
- Q7533418 wikiPageWikiLink Q957852.
- Q7533418 comment "According to the classical theories of elastic or plastic structures made from a material with non-random strength (ft), the nominal strength (σN) of a structure is independent of the structure size (D) when geometrically similar structures are considered. Any deviation from this property is called the size effect. For example, conventional strength of materials predicts that a large beam and a tiny beam will fail at the same stress if they are made of the same material.".
- Q7533418 label "Size effect on structural strength".
- Q7533418 depiction Malpasset-1988.jpg.