An Advanced Process for Virtual Evaluation of the Dimensional Resistance of Interior Parts

Eberhard Michael Kreppold

doi:10.4271/2006-01-1475

2006-04-03

An Advanced Process for Virtual Evaluation of the Dimensional Resistance of Interior Parts 2006-01-1475

The importance of the automotive interior as a characteristic feature in the competition for the goodwill of the customer has increased significantly in recent years.

Whilst there are established, more or less efficient CAE processes for the solution of problems in the areas of occupant safety and service strength, until now the implementation of CAE in themes such as dimensional stability, warpage and corrugation¹ of plastic parts has been little investigated. The developmental support in this field is predominantly carried out by means of hardware tests.

Real plastic components alter their form as a result of internal forces often during the first weeks following production. The process, known as “creep”, can continue over an extended period of time and is exacerbated by high ambient temperatures and additional external loads stemming from installation and post assembly position.

In three steps a closed multidisciplinary process was developed in which all dominant influential parameters from manufacturing, installation, ambient climate and physical loading were taken into consideration. The process is aided by the development of individual mathematical creep laws.

The useabililty of this approach was verified with appropriate experimental results.

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An Advanced Process for Virtual Evaluation of the Dimensional Resistance of Interior Parts 2006-01-1475

SAE MOBILUS