Engineering and technology
- Computer aided engineering, simulation and design
- Numerical modelling and design
- Smart lightweight structures
- Manufacturing processes, methods and technologies
- Manufacturing systems
Additive Manufacturing (AM) has significantly increased the potential of metal lattice structures (MLS). For structural applications, first steps are being made to investigate the use of AM-MLS for weight reduction, and for improving and tuning mechanical characteristics such as stiffness, energy absorption, impact resistance, damping or fatigue performance. Multi-functional MLS designed to perform well in several of these areas are at present, however, not available. Also the complex relationships between manufacturing process, unit cell design, parent material, operational loading and dynamic behavior of such lattice structures are not yet well understood. This research project aims at addressing this by unraveling the fundamental features that influence the dynamic behavior of MLS. Unique in-house developed hybrid laser based additive/subtractive manufacturing techniques will be tailored for manufacturing of metal lattice structures with improved and tunable surface characteristics aiming at enhanced impact, fatigue and dynamic material properties. At the same time, the influence of unit cell design, material and operational dynamic loading will be analyzed in detail using multi-scale simulations. Input for the simulations and validation cases will be provided by purpose-developed static, fatigue and high strain rate experiments covering material length scales from the lattice struts over, one or multiple, unit cells to solid structural components.