Simulation

- Global damping definition through correlation in time domain
- Direct link between tolerancing and simulation (RD&T and E-LINE)
- Creating new post processing features (vector plot, combining squeak and rattle)
- S&R load definition
- Improving evaluation in time domain


E-LINE method 

The E-LINE method is focusing on calculating and evaluating the relative displacement between two parts, because the relative displacement is the main reason for Squeak&Rattle.

The evaluation is always performed in time domain and in a local coordinate system in order to capture the rattle direction and the squeak plane.

To enable an efficient evaluation of the relative displacement, node pairs are defined along a 3D curve, which is located between the two parts using an Ansa script. One node is belonging to the master surface and one node to the slave surface. Each node pair is using its own local coordinate system, which is aligned to the master surface. In order to capture the gap direction and the squeak plane correctly a number of different master/slave configurations are available in the Ansa script. This is an important enabler to link the E-LINE simulation results to the tolerance analysis.The starting point of the E-LINE and the spacing between the evaluation points (node pairs) can be specified by the user.


E-line process.bmp



Published: Tue 29 Apr 2014. Modified: Tue 06 May 2014