Structural Components

Multi-FEAST© is a software specifically designed to predict fatigue damage in un-notched and notched metallic structural components subjected to both constant and variable amplitude uniaxial/multiaxial fatigue loading.

Both high-cycle fatigue strength and lifetime are estimated according to the Modified Wöhler Curve Method (MWCM). When used to perform the fatigue assessment of notched components, the above approach can be applied in terms of both nominal and local stress quantities. In the latter case, since the MWCM is used in conjunction with the Theory of Critical Distances (TCD), Multi-FEAST© is designed to directly post-process the outputs from commercial Finite Element software packages.

As far as standard notched components are concerned, Multi-FEAST© allows the user to directly estimate both stress concentration factors and local stress fields through closed form formulas.

Further, independently from the type of performed stress analysis (i.e., either nominal or local stresses), Multi-FEAST© can use as input files load histories gathered by using standard transducers; for example strain gages.

Unnotched Materials (Components) Tool

This tool allows the user to perform the fatigue assessment of unnotched engineering materials by applying the Modified Wöhler Curve Method. It can be used to estimate fatigue lifetime as well as high-cycle fatigue strength (i.e., the classical fatigue limit problem) by post-processing both constant and variable amplitude load histories.

Notched Components – Nominal Stress based Analysis

This tool allows the user to perform the fatigue assessment of notched components by applying the Modified Wöhler Curve Method in terms of nominal stresses, that is, by taking full advantage of the classical theory due to Peterson and Neuber, where such a theory is generalised so that it can efficiently be used to design stress raisers against constant and variable amplitude multiaxial fatigue.

Notched Components – L based Analysis

This tool allows the user to perform the high-cycle fatigue assessment of notched components by applying the Modified Wöhler Curve Method along with the Theory of Critical Distances. The peculiarity of this tool is that multiaxial fatigue limits are estimated by directly post-processing the stress fields acting on the material in the vicinity of stress concentrators, where such stress fields can be determined either analytically or, more important, by solving conventional static FE models. Finally, such a tool can be used to perform the high-cycle fatigue assessment under both constant and variable amplitude uniaxial/multiaxial fatigue loading.

Notched Components – LM based Analysis

This tool allows the user to estimate lifetime of notched components by applying the Modified Wöhler Curve Method along with the Theory of Critical Distances. The peculiarity of this tool is that the number of cycles to failure is estimated by directly post-processing the stress fields acting on the material in the vicinity of stress concentrators, where such stress fields can be determined either analytically or, more important, by solving conventional static FE models. Finally, such a tool can be used to predict finite life under both constant and variable amplitude uniaxial/multiaxial fatigue loading.