In this case, it may be necessary to limit the plastic rotation in the plastic hinges instead of allowing for indefinite plastic rotation capacity. However, there are some circumstances under which the traditional methods of plastic analysis cannot be applied.įor example, there are materials that may not be able to sustain plastic moment throughout the loading history because of lack of ductility in the materials. Plastic analysis has been used traditionally to assess the collapse behavior of structures on the basis of yielding of cross sections under proportionally increasing loading. Bill Wong, in Plastic Analysis and Design of Steel Structures, 2009 7.1 Introduction
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