Methodology for the Efficient Analysis of Thermal and Thermo-Elastic Behaviour of Machine Tools

Abstract

Thermally induced deviations become the limiting factor for the precision of machine tools. Structure-based finite-element models of high resolution can estimate these deviations with high accuracy but have also a high computational effort. With model order reduction (MOR) these models can be converted into structure-preserving reduced-order finite-element models (FEM-MOR-models) which can be solved very efficiently in MATLAB/Simulink®. To improve model matching selective thermography is used. Selective thermography is a measurement method providing high structural resolution and minimal instrumentation expense due to the use of thermography and photogrammetric methods.

Innovative Simulation Technology for Real-Time Calculation of the Thermo-Elastic Behaviour of Machine Tools in Motion

“…This makes it relatively simple, e.g. by the model adjustment, to link a measurement point to a corresponding point of the model [15]. The results can be also simply visualized in 3D.…”