Obtaining valid and meaningful long-term material data for the simulation of plastic components is often a major problem. In many cases, such data are not available. The reason for this is the great effort required for their experimental determination. The long-term creep tests required for this are very time-consuming and cost-intensive.On the one hand, the necessary test methods will be streamlined and automated as part of the project. This will significantly reduce testing times and costs. Among other instruments, SKZ will use the so-called Stepped IsoStress method for this purpose.
On the other hand, PART Engineering will develop a method that allows the calculation of creep curves on the basis of often available material data. Mathematical material models are used for this purpose. A special feature of the development work of both partners is that the aim is to represent the long-term behavior up to the point of failure. As a result, creep curves are available which allow not only a description of the long-term deformation behavior but also of the onset of failure.
A module is being developed for our software products Converse and S-Life Plastics that implements the developed procedure in a user-friendly manner.