Forced Vibration Analysis of a Composite Laminate
Application ID: 67731
Delamination or the separation of layers is a common failure mode in laminated composite materials. Various factors, including loading, defects in the material, and environmental conditions can trigger the initiation and propagation of layer separation. This leads to degraded structural performance and sometimes even complete failure of the structure.
This example considers the response of a delaminated plate under forced vibration. The composite plate is analyzed for two different locations of delamination and compared with the intact plate, without delamination. The plate is made of three layers with [90/45/0] stacking. The delamination is assumed to occur in a circular or semi-circular region between the second and third layers of the laminate and modeled using the layerwise theory.
The frequency response analysis of the composite plate is performed under bending as well as twisting loads and the response of the plate in terms of impedance and transverse velocity is measured at different points on the plate.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® and
- Composite Materials Module and
- either the MEMS Module, or Structural Mechanics Module
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.