A car collides with an obstacle. Even if such an image is the first to come to mind when you hear the word crash, highly dynamic processes are no longer only of great importance in the automotive industry, but also, for example, in construction or mechanical engineering. A crash is a special case of dynamic loading: An extremely high force acts on a component or component group for a generally very short period of time. This is why we speak of short-term dynamics.
In this area, there is often a conflict between safety and cost savings – the end product must also withstand extreme loads, such as a violent impact, while at the same time being as light as possible and causing the lowest possible material costs.
Tests with physical prototypes are usually particularly expensive in short-term dynamics and can take a lot of time. With the help of FE simulation, the dynamic behavior of the components involved can be analyzed cost-effectively, quickly and very accurately in a large number of virtual tests. Based on the results, the components can be optimized with regard to their geometry and material. Further typical tasks are contact analysis and optimization of operating parameters.
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Mechanical Engineering, TU Darmstadt
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