💡Understanding a model sensitivity to various parameters is key to controlling quality (verification and validation), assessing modelling refinement or simplification possibilities, and getting project engineering insights.
🖥️ 🔍 DoE study display strategy must thus provide a comprehensive interactivity to allow browsing the results, that can feature many indicators, and observing the varying model response.
▶️ In this video, we demonstrate our solutions to an interactive modal analysis DoE display.
📝For those curious about the context, our example is a parametrized brake squeal complex eigenvalue analysis.
👉 In this framework, self-excited friction induced vibrations are characterized by unstable complex modes (negative damping ratio) linked to the steady sliding condition between the liners and disc. Unstable modes are thus of particular interest as they should be avoided.
⚠️ The negative damping ratio not being linked to the attainable vibration amplitude, other indicators can be evaluated to assess criticality.
🔊 Equivalent radiated power is here used to approach noise propensity, this indicator is best used when evaluated on exposed surfaces such as on the brake disc!