【摘 要】
：
In the mechanical analysis of a structure/composite with periodic holes/inhomogeneities based on analytic techniques,the holes/inhomogeneities are usually a
【机 构】
：
StateKeyLaboratoryofMechanicsandControlofMechanicalStructures,NanjingUniversityofAeronauticsandAstro
【出 处】
：
The 5th Asian Conference on Mechanics of Functional Material
论文部分内容阅读
In the mechanical analysis of a structure/composite with periodic holes/inhomogeneities based on analytic techniques,the holes/inhomogeneities are usually assumed to be circular.In this paper,we develop an efficient method (based on complex variable techniques) to calculate the surface tension-induced stress field in a structure containing a periodic array of unidirectional nanosized holes of arbitrary shape.In this method,we use conformal mapping and Faber series techniques to address a finite representative unit cell (RUC) consisting of a single arbitrarily-shaped hole with a constant surface tension imposed on the holes boundary and periodic deformations imposed on the edge of the RUC.Several numerical examples are presented to verify the accuracy of our method and to study the influence of the shape and volume fraction of the holes on the stress concentration in the structure.We show that for holes of certain shapes (such as triangle,pentagon or hexagon) the maximum hoop stress around the holes may appear exactly at the point(s) of maximum curvature when the hole volume fraction exceeds a certain value.On the other hand,when the hole volume fraction falls below about 10%,it is found that the surface tension-induced stress concentration around periodic holes can be treated approximately as that around a single hole with the same hole shape and size in an infinite plane.
其他文献
The present paper extends the previous study[1]which analyzed a one-dimensional thermo-elasto-dynamic problem of an infinite film made of functionally grade
In this paper,theSaint-Venants torsionproblems of a circular composite bar are solved by a systematic manner.The inclusion in the composite bar is not a hom
Phononic crystal (PC),composite structure consisting of periodic arrays of acoustic or elastic inclusion in matrix system,has been already attracted extensi
Based on the nonlocal theory and Timoshenko beam theory,this paper analyzes the wave propagation characteristics in MEE nanobeams.Theoretical formulations i
Considering the magnetic field of piezoelectric (PE) material and the electric field of piezomagnetic (PM) material,an eccentric crack problem of a PM layer
Achieving high elasticity for silicon (Si) nanowires,one of the most important and versatile building blocks in nanoelectronics,would enable their mechatron
The purpose of this work is to study a new composite material including polyurethane (PU) resin and carbon fiber fabric.This PU resin is superior in impact,
Macroscopic plastic deformation is strongly related to the interaction and evolution of a series of microstructures in metals.This work aims to develop a ph
This paper is to present a general solution to reduce the stress concentration around an elliptic hole in an infinite homogeneous plate subjected to far-fie
The spatial and temporal domain switching near the tip of an inclined crack is observed in ferroelectrics.The birefringence technique is used to measure the