Development of an experimental and numerical platform for rotor bearing fatigue investigations using elastomer-metal laminates

Institute

Lehrstuhl für Hubschraubertechnologie (TUM-ED)

Type

Master's Thesis /

Content

experimental / constructive /  

Description

Project Outline

Elastomeric rotor bearings are key components in modern helicopter rotor systems. Their
load-carrying capability and fatigue resistance are largely determined by the interaction of
multiple bonded steel and elastomer layers. In this project, a steel-reinforced natural rubber
laminate will be investigated as a simplified representative structure for rotor-bearingrelated
fatigue studies. The objective is to establish a suitable experimental testing
methodology, identify appropriate specimen geometries, characterize the structural
response of the laminate, and develop calibrated finite element models. A first series of
fatigue experiments will be conducted to evaluate the suitability of the proposed laminate
concept for future rotor-bearing fatigue investigations.

Work Packages
1. Literature review on rotor bearings and elastomer-metal laminates
2. Characterization of laminate architecture and development of specimen geometries
3. Design and evaluation of specimen manufacturing and testing procedures
4. Experimental characterization under quasi-static loading conditions
5. Development and calibration of finite element models
6. Initial fatigue tests and assessment of the suitability for future fatigue investigations

Requirements

• Interest and experience in experimental mechanics and structural testing
• Experience in CAD and FEM modelling
• Interest in fatigue and durability of engineering structures
• Independent and structured working style

Possible start

October 2026

Contact

Christoph Hackner
Room: MW2701
Phone: +49 (0)89 / 289-16362
christoph.hacknertum.de

Announcement