Fraunhofer Institute for Industrial Mathematics ITWMAbout once a year, our department offers a three-day seminar on the topic of »Load data – analysis, design and simulation«. The event is aimed at the target group of calculators and test engineers, among others. This seminar is held in German.
Content
Dynamic loads occurring in the field play a central role in the development of mechanically stressed systems. A good understanding of the operating loads is crucial for a design with regard to functional properties such as strength and vibration behavior.
This begins with the measurement of operating loads under representative conditions. A statistical description of the loads takes into account the scattering of stresses during operation. With the help of analysis methods in the time, frequency and amplitude range (e.g. rainflow method), reproducible design loads are defined that have a quantified relationship to the stress in the field. These design loads - usually multi-dimensional load-time curves - are the input variables for both test bench tests and CAE simulations.
The task of FE and MBS analysis is to correctly map the force flows from system loads to bearings and components through to local stresses in the components. Today's simulation methods and computer performance also allow this for multi-dimensional transient load-time curves. In this way, functional properties such as vibration comfort and operational stability can be analyzed and optimized before a prototype is available for measurement. The CAE simulations also help to optimally configure component tests, shorten test times and simplify tests.