Shakedown Analysis of Structures
A short and simple to understand definition of shakedown can be found in SpringerReference:
"A structure made of elastic plastic material in a given loading scheme, after an initial stage of possible limited plastic deformation (of finite total plastic dissipation), may eventually shake down to some residual stress state, from which it subsequently responds elastically (and, hence, safely) to the external agencies. Otherwise, the structure is considered as having failed, because the plastic deformation would accumulate unrestrictively (the mode is called ratcheting or incremental collapse), or be bounded but vary cyclically and unceasingly (fatigue, cyclic, or alternating plasticity collapse mode)."
Shakedown analysis is a convenient tool to define the safety margins of ductile structures subjected to varying loads. Determining safe limit states is a crucial procedure for every engineering structure.
Another website containing information on shakedown is the website of the Institute of General Mechanics IAM-RWTH. There, one can find information on how shakedown analysis can take into account damage, geometrical nonlinearities or hardening. There are also examples on the application of shakedown analysis to mechanical engineering structures and composites.
"A structure made of elastic plastic material in a given loading scheme, after an initial stage of possible limited plastic deformation (of finite total plastic dissipation), may eventually shake down to some residual stress state, from which it subsequently responds elastically (and, hence, safely) to the external agencies. Otherwise, the structure is considered as having failed, because the plastic deformation would accumulate unrestrictively (the mode is called ratcheting or incremental collapse), or be bounded but vary cyclically and unceasingly (fatigue, cyclic, or alternating plasticity collapse mode)."
Shakedown analysis is a convenient tool to define the safety margins of ductile structures subjected to varying loads. Determining safe limit states is a crucial procedure for every engineering structure.
Another website containing information on shakedown is the website of the Institute of General Mechanics IAM-RWTH. There, one can find information on how shakedown analysis can take into account damage, geometrical nonlinearities or hardening. There are also examples on the application of shakedown analysis to mechanical engineering structures and composites.