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Fatigue & Durability

Fatigue is failure under repeated or otherwise varying load which never reaches a level sufficient to cause failure in a single application. Component seems to lose strength after multiple load applications, appears to get tired, hence the name “fatigue”.

For estimating the onset of failure from repetitive loading, you no longer need laborious hand calculations or spreadsheets. Modern fatigue analysis tools ― like ANSYS nCode DesignLife ― predict the fatigue life of both components and complete products rapidly and accurately.

Fatigue finite element analysis starts with a structural simulation to calculate the stresses and strains in a model due to a single load. You then combine these results with material models and a description of the repetitive loading that the product is expected to undergo during its use.

Understanding the life cycle limit of a product is important from a warranty and safety standpoint. Given the design and off-design loadings an assembly or component might see in its lifetime, it is important for the analyst, user and maintenance engineer to know when breakage might occur and how severe a reported damage truly is for the strength and operation of the component.

Simulation solutions for fatigue & durability at LEAP Australia

Predicting crack initiation locations in solid components from 3D Scans or CAD geometry parts is possible.

Simulation solutions for fatigue & durability at LEAP Australia

Welded structures are prone to fatigue failures. Our solution predicts failure locations and informs inspection frequency.

Simulation solutions for fatigue & durability at LEAP Australia

How do you know if a cracked part is going to fail? Understanding cracks propagation informs engineers to assess fit for purpose.

CAE for durability diagram

LEAP Australia has partnered with nCode, the leading provider of engineering data analysis solutions specialising in fatigue and durability. nCode have provided customers with data capture and analysis solutions for over 30 years and LEAP is proud to support companies in Australia and New Zealand by offering nCode’s flagship products, Glyphworks® and DesignLife™.

For a more detailed overview of Fatigue, visit our FEA Blog or click here for more information on nCode products.