Session: 05-02 Structure & Dynamics

Paper Number: 76042

Start Time: December 2, 2021, 03:15 PM

76042 - Stiffness Analysis of Delaminated Composite Beams Using Roller Clamps 

Composites are favored over other traditional materials in many aerospace applications because of their high stiffness and strength-to-weight ratio. Taylor-made material properties can be achieved by scheming the structural parameters making the material light, high strength, and durable. Present work deals with a novel approach to enhance the strength of a layered delaminated composite beam using roller clamps to improve stiffness by providing uniform transverse force. Composite beam stiffness significantly degrades due to adverse environmental conditions, impact loading, and effect due to delamination or debonding. Composite structures are prone to delamination during their life span. Therefore in-depth knowledge is needed to find the effect of roller clamps on the dynamic behavior of beams with varying delamination sizes. The present approach will be useful to enhance the stiffness of composite structures with delamination.  The free vibration of a clamped cantilever beam is investigated, and the results are compared to those of an unclamped and without delaminated beam. The findings are supported by experimentally obtained responses (modal analysis). Furthermore, the complex activity of the laminated structure is numerically computed and compared to open literature to ensure correctness. The laminated composite beam's static, free vibration responses are calculated using finite element simulation software (ANSYS).

Presenting Author: Vivek P G National Institute of Technology Agartala