EVALUATION OF COMPOSITE MATERIAL CHANGE OF AN AIRPLANE SEAT LEG

Composite Material Change of an Airplane Seat Leg: Bio

About

During the course of this project, an airplane seat leg was modeled using Solidworks and a material model was generated using Digimat-MF for a Grivory GV-5H (PA66 matrix reinforced with 50% Glass Fibers).
The experimental curves of Grivory GV-5H material was loaded in Digimat-MX and reverse engineered to generated the true stress vs true strain curves.

Composite Material Change of an Airplane Seat Leg: Text

CAD MODEL OF THE PART

A CAD model of the airplane seat leg was designed using Solidworks. The part was designed keeping in mind the FAA requirements such as sustaining the 9g forward loading test.

AUTOMATIC METHOD CALIBRATION

The Grivory GV-5H experimental curves from Digimat MX were used to calibrate an elasto-plastic material model using automatic method.

INTERACTIVE METHOD CALIBRATION

Using the interactive calibration method, the material model was optimized to curve fit the experimental curves with the acquired True Stress-True Strain plots.

Composite Material Change of an Airplane Seat Leg: Projects

Once all the calibration process was done, the obtained microstructure was analyzed and it was found that 88.9% of the fibers were in one direction on the skin of the material and only 25% of the fibers were in the same direction in the core of the material. Since the skin of the material has more influence on the part than the core, only the fiber orientation at the skin was considered for analysis

Composite Material Change of an Airplane Seat Leg: Text