Verification and Validation

Verification and Validation

Verification and Validation (V&V) are procedures that are used to check that a process meets the requirements and that it meets its intended purpose. Applying these procedures to FEA, there are commonly used definitions for both Verification and Validation, and what they are used for:
– Verification:
    – Getting the mathematical model right
    – Making sure the FEA works
    – Providing an accurate FEA
– Validation:
    – Getting the physics right
    – Ensuring the FEA models the process correctly
    – Checking the FEA against test data

Hence, verification is done by the software developers, whereas validation is done by the FEA user.

The most common method of FEA software verification is the comparison of code outputs with analytical solutions which are already known. This is usually done on very simple problems, much simpler than the real world applications the FEA software is commercially used for.

There are also several common methods for FEA model validation (https://www.fea-solutions.co.uk/validation-of-fea/).

A widely recognised V&V standard for FEA is by NAFEMS, the International Association for Engineering Modelling, which uses the definitions for V&V set by ASME, the American Society of Mechanical Engineers.

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