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An interpretation and modification of the SWT function
  • Daniel Kujawski
Daniel Kujawski
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Abstract

In this paper a new interpretation and modification of the SWT function in terms of the total damaging energy density is proposed and discussed. The total damaging energy density is the sum of the damaging part of the strain energy density and complementary energy density corresponding to the first quadrant in damaging σDD axes. For cyclic loading with positive mean stress (σm≥0) the proposed function reduces to the original SWT formulation. For cyclic loading with negative mean stress (σm<0) the maximum stress is augmented by 1/3 of absolute value of the mean stress. The proposed approach shows a consistent correlation of the mean stress effects for both positive and negative mean stresses.

Peer review status:ACCEPTED

10 Mar 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
12 Mar 2021Submission Checks Completed
12 Mar 2021Assigned to Editor
12 Mar 2021Reviewer(s) Assigned
02 Apr 2021Review(s) Completed, Editorial Evaluation Pending
13 Apr 2021Editorial Decision: Revise Major
14 Apr 20211st Revision Received
15 Apr 2021Assigned to Editor
15 Apr 2021Submission Checks Completed
15 Apr 2021Reviewer(s) Assigned
16 Apr 2021Review(s) Completed, Editorial Evaluation Pending
19 Apr 2021Editorial Decision: Revise Minor
19 Apr 20212nd Revision Received
19 Apr 2021Assigned to Editor
19 Apr 2021Submission Checks Completed
19 Apr 2021Review(s) Completed, Editorial Evaluation Pending
21 Apr 2021Editorial Decision: Accept