Related Experiment Video
Updated: May 25, 2026

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
Published on: April 27, 2019
Transmission loss of periodically stiffened laminate composite panels: shear deformation and in-plane interaction
Abderrazak Mejdi1, Julien Legault, Noureddine Atalla
1GAUS, Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada. abderrazak.mejdi@usherbrooke.ca
Abstract:
This paper investigates the transmission loss of symmetric and asymmetric laminate composite panels periodically reinforced by composite stiffeners. A comprehensive model based on periodic structure theory is developed. First order shear deformation theory is used and the coupling of the in-plane motion of the panel with its out-of-plane motion is taken into account. Stiffeners interact with the panel through three forces (two in-plane, one out-of-plane) and a torsion moment. Three types of cross sections are investigated for the composite stiffeners: I-shaped, C-shaped, and omega-shaped cross-sections. The model is validated numerically by comparison with the finite element/boundary element method. Experimental validations are also conducted. In both cases, excellent agreement is obtained. Numerical results show that the in-plane coupling effect is increased by increasing the panel thickness and the stiffener's eccentricity. The in-plane coupling effect is also found to increase with frequency.
More Related Videos
09:54Measuring the Mechanical Properties of Glass Fiber Reinforcement Polymer Composite Laminates Obtained by Different Fabrication Processes
Published on: June 30, 2023
08:40Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing
Published on: February 11, 2016
Related Concept Videos
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Bending of Members Made of Several Materials
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Deformation of a Beam under Transverse Loading
The insights from the bending moment diagram extend to...
Elastic Strain Energy for Shearing Stresses
Shearing Stresses in a Beam: Problem Solving
Design of Transmission Shafts - Stress Analysis