PSI - Issue 60

Rosy Sarkar et al. / Procedia Structural Integrity 60 (2024) 75–92 Rosy Sarkar/ Structural Integrity Procedia 00 (2019) 000 – 000

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2. Literature on Ratcheting Studies

Ratcheting is defined as the directional progressive accumulation of plastic deformation of a material when subjected to a primary load along with a secondary cyclic load [Paul (2019)]. It is the cycle-by-cycle accumulation of plastic strain on application of cyclic load with constant stress amplitude and non-zero mean stress [Vishnuvardhana et al. (2013a)]. The effect of cyclic loads on a material is well illustrated in Figure 2 [Paul (2019)].

Figure 2 Different types of cyclic loading and corresponding material response [Paul (2019)]