I. OverviewDevelopment a contact model for contact stiffness calculationDesign an experimental investigation for contact stiffness calculation

II. Methodology

III. Results Determination of Normal and tangential contact stiffness for a

punch on a surface (Implementation of analytical solutions by MATLAB)

Considering the model of a punch on a surface can be used for analytical solutions to determine pressure distribution, tangential forces, displacements and finally contact stiffness

IV. Future Works Investigation the experimental procedure Development of numerical methods for contact stiffness model using ANSYS Comparison and validation the experimental and numerical models for the contact stiffness behaviour

Experimental and numerical investigation ofContact stiffness in blade root joints

Hadi DastaniPh.D. student in Mechanical Engineering (34rd Cycle)

Joint research project with Northwestern Polytechnical University – NPU, Xi’an China.Supervisors: Prof. Daniele Botto, Prof. Chao Xu

Modelling the blade root configuration for further numerical analysis

Preparation and design experimental equipmentSome modifications, such as fixtures, have been done for theneeded equipment to perform the experimental procedure