A new method for studying the effect of multiaxial strain states on low cycle non-proportional fatigue prediction
Source abstract
Abstract
Abstract In this paper, a new method is put forward to predict fatigue life under low cycle non-proportional loadings. Modified from the thought of Modified Wohler Curve Method, a multiaxial ASME strain based approach is presented to estimate low cycle fatigue damage under proportional loadings. Based on it, the new method can consider the multiaxiality effect on the determination of reference proportional strain path and the calculation of non-proportionality factor F np . For the first time, a viewpoint of inhomogeneous integral path for calculating factor F np is proposed, and a path-dependent weight factor is defined to describe this heterogeneity. The experimental tests on 3 sets of metallic materials with various loading cases are referenced to validate the present study. As a result, the proposed method can more accurately quantify the non-proportionality degree of loading paths.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Fire effects on concrete materials · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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