Abstract
To understand plastic limit analysis it is helpful to review the behavior of an elastic-plastic solid or structure subjected to mechanical loading. An inelastic solid will yield at a specific magnitude of the applied load. The corresponding load is called the elastic limit of the structure. If the external load exceeds the elastic limit, a plastic region starts to spread through the structure. With further expansion of the yield area, the displacement of the structure progressively increases. At another critical load, the plastic region becomes so large as not to resist the unconstrained plastic flow in the solid. The load cannot be increased beyond this point. The collapse load is called the plastic limit of the structure. Plastic limit analysis involves an associated flow rule of the adopted yield criterion. The plastic limit load is also registered as the load-bearing capacity of the structure.
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(2009). Theorems of Limit Analysis. In: Structural Plasticity. Advanced Topics in Science and Technology in China. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-88152-0_4
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