(UNPUBLISHED) CLD-LPM | Constrained Layer Damping
Summary
Key principles of the concept
- Building up structural elements by stacking thin layers of steel dramatically improves dynamic and structure performance
- Deformation results in friction between the layers, which increases damping
- Increased damping results in vibration suppression
- No welding - > concept is not prone for fatigue damage
- Vibration suppression effect can be greatly enhanced by adding a thin viscoelastic material layer between each layer of steel
- The viscoelastic material rapidly dissipates vibration energy
- This approach is often called “Constrained-Layer Damping”
- Thin steel layers can be easily punched or laser cut to produce complex shapes, which can then be coated with a viscoelastic layer, stacked and bound to produce elements of any thickness
- The constrained-layer assembly process eliminates many problematic aspects of producing large structural elements incl. logistics, precision cutting and welding of thick steels
- The constrained-layer design is most applicable in massive machine elements found in large rotating motors & generators, ships & trains, tractors, excavators, and shredders & crushers
- In many cases, the improved dynamic performance makes it possible to also dramatically reduce mass and overall cost
Searching for partners to realize our idea:
• Demonstration providers / end-users: Industrial companies able to provide interesting applications to showcase the concept and eager to develop their products and processes • Experienced coordinator: We are looking for an organization with proven coordination skills that is well networked and would prefer to occupy a scientific lead role ourselves • Complementary research skills and infrastructure: Research partners able to provide competence in e.g. industrial design, corrosion, life-cycle analysis, end-of-life processes and facilities for experimenting with large structures If joining an existing consortia, LUT can bring along one industrial end-user / demonstrator, along with research competences listed earlier