Some basic problems in anisotropic bimaterials with a viscoelastic interface

Bridged interface cracks in anisotropic bimaterials

The bonding strength between dissimilar materials in composites is often relatively weak. Interface debonding and cracking are of common occurrence. As an e€ ective method to minimize such failures, ® bre stitching is used to enhance the bonding strength when joining layers in polymer composites. With the presence of the reinforcing ® bre, the overall elastic response for each component of the ...

Some Anisotropic Viscoelastic Green Functions

In this paper, we compute the closed form expressions of elastodynamic Green functions for three different viscoelastic media with simple type of anisotropy. We follow Burridge et al. [Proc. Royal Soc. of London. 440(1910): (1993)] to express unknown Green function in terms of three scalar functions φi, by using the spectral decomposition of the Christoffel tensor associated with the medium. Th...

On Stationary and Moving Interface Cracks with Frictionless Contact in Anisotropic Bimaterials

Some Basic Problems With Complex Systems

From an engineering perspective, it is well known that there are numerous problems to predict and control complex systems. In addition, there are also problems to understand the concept of complexity from the perspective of physics and the epistemology of physics. Three outstanding topics in this regard are discussed: 1. the fundamental context-dependence of the de nition of complexity, 2. the ...

Reduction of free-edge stress intensities in anisotropic bimaterials

We investigate the free-edge stresses in anisotropic bimaterials through the use of the free-edge stress intensity factor, Kf . This requires a determination of the singularity order at the free-surface as well as a calculation of the near-field stresses. We determine the order of the singularity for arbitrary free-surface orientation of the upper material using an eigenvalue analysis for aniso...