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Know-how related to process simulation of elastomeric components

Mould-filling simulation is potentially very useful to rubber-component-manufacturers, reducing tooling costs, and increasing production efficiency by reducing waste of material, time and energy. However, there is little use of filling-simulation by rubber industry due to their experience of poor predictions and the large number of measurements of material properties that have to be made.

A methodology is developed on the basis of commercial codes for rubbers processing simulation and intends to be a useful tool for design or improvement of manufacturing processes with rubber. It includes understanding of mathematical description of models that account for special rheological properties and testing methods for assessment of necessary parameters. During the project the sources of many of the poor predictions were identified and ways of avoiding them established. Also it is determined how to minimise the number of material-parameter measurements.

In addition to the outputs of filling-simulation, a stress relaxation model was developed which, together with existing FE-software, can predict skin orientation in rubber-parts. This is important because it causes distortion and may also significantly affect fatigue life. All these models are validated against experimental data provided for two materials.

We can offer a service of mould filling simulation for elastomeric components, which is of great value to the rubber industry.

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