On the role of dynamic stress concentrations and fracture mechanics in the longitudinal tensile failure of fibre-reinforced composites

2020 ◽  
Vol 228 ◽  
pp. 106920
Author(s):  
Gianmaria Bullegas ◽  
Jorge Moledo Lamela ◽  
Soraia Pimenta ◽  
Silvestre Taveira Pinho
Keyword(s):  
Fracture Mechanics ◽  
Dynamic Stress ◽  
Tensile Failure ◽  
Reinforced Composites ◽  
Stress Concentrations ◽  
Fibre Reinforced Composites ◽  
Dynamic Stress Concentrations

Diffraction of Plane Compressional Waves by an Array of Nanosized Cylindrical Holes

2010 ◽  
Vol 78 (2) ◽  
Author(s):  
Q. F. Zhang ◽  
G. F. Wang ◽  
P. Schiavone
Keyword(s):  
Surface Energy ◽  
Dynamic Stress ◽  
Surface Elasticity ◽  
Expansion Method ◽  
Stress Concentrations ◽  
Compressional Waves ◽  
Circular Holes ◽  
Cylindrical Holes ◽  
Effect Of Surface ◽  
Dynamic Stress Concentrations

When the radius of a hole reduces to nanometers, the influence of surface energy becomes prominent in its mechanical behavior. In the present paper, we consider the diffraction of plane compressional waves by an array of nanosized circular holes in an elastic medium. The effect of surface energy is taken into account through surface elasticity theory. Using the wave expansion method, we derive the corresponding elastic diffraction fields. Dynamic stress concentrations around the holes and the scattering cross section are calculated to address the surface effects on the diffraction phenomena.

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