To guarantee realistic high fidelity simulations, simulation models meet stringent accuracy standards. To ensure reliable simulation results, you must compare component, subsystem and full system models with experimental data or validated models of similar structures. Building and validating system models from the bottom up is the only way to prevent accumulating inaccuracies. In addition to more reliable what-if analysis, validated models provide a better understanding of assumptions regarding material properties, connections, joints and boundary conditions.
Although static physical tests serve many design purposes, models used for vibro-acoustic simulations usually require systematic test-based validation of dynamic properties. LMS Virtual.Lab Correlation helps correlate physical test results and prepare structural tests. A comprehensive toolset significantly facilitates simulated and measured mode shape comparison and operational deflection shapes and response functions. Use the original finite element (FE) model as a basis to provide optimal comparison positions and the required number of excitation and response points to avoid testing errors and redundancy.
Deducing model improvements using validation output is not always obvious. To facilitate model updating driven by validations, LMS Virtual.Lab Correlation offers specialized features to identify specific locations that need improvement. For example, it runs sensitivity analysis that efficiently retain the most influential specified parameters. You can also automatically update models using internal and external algorithms, such as Nastran Solution 200, which focuses on tuning modal frequencies and response functions.
Further Information: www.plm.automation.siemens.com/products/lms/virtual-lab/correlation/