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Ph.D. position opened at the University of Brescia, Italy

Submitted by Lorenzo Bardella on
research
Crystal plasticity
strain gradient plasticity
small-scale plasticity
micromechanics of composite materials
The group of Mechanics of Solids and Structures at the School of Engineering at the University of Brescia (Italy) has an open PhD position. The appointment will begin on January 1st 2014 for three full years.


The following topics are of interest:
1. small-scale plasticity of metals, with emphasis on modelling the size effect through strain gradient plasticity theories and dislocation mechanics. 2. micromechanics of composite materials, with emphasis on modelling failure.


Non-linear buckling analysis using static riks method-abaqus

Submitted by juliuspusic on
research
non-linear buckling analysis
Static Riks method..how to give imperfection???

hi,i have been doing non-linear buckling analysis using STATIC RIKs method

my model specification:   length:65 metre, dia=2.85metre,thickness=0.38meter 

 and i am having the following doubts:

 1.i have done Eigen value buckling analysis first and got the mode values..but for getting the mode shapes which load value i have to apply????(whether calculated euler buckling load value)

2.i have given imperfection as 0.0038  i.e..,10% of thickness value is it correct????

Nonlinear Physical Systems: Spectral Analysis, Stability and Bifurcations

Submitted by Oleg Kirillov on
research
book
mechanics
education
physics
stability
nonlinear dynamics
bifurcation
spectral analysis

Bringing together 18 chapters written by leading experts in dynamical systems, operator theory, partial differential equations, and solid- and fluid mechanics, this book presents state-of-the-art approaches to a wide spectrum of new and challenging stability problems.

A New Model of Orthotropic Bodies

Submitted by Jiang Ke on
research

The solution of linearly elastic and orthotropic solid bodies is very complicated, thus a new element model for solving linearly elastic and orthotropic bodies is presented by using the generalized Hooke's law and the superposition principle. This new model is a simple truss consisting of some bars, and then the solution of orthotropic body becomes simple. Furthermore, this new model reveals the physical mechanism of a solid body under the action of applied forces.

Keywords: Elasticity, new model, orthotropic body, truss, generalized Hooke's law

A New Element Model of Solid Bodies

Submitted by Jiang Ke on
research

Based on the generalized Hooke's law and the superposition principle, a new element model of linearly elastic and orthotropic solid bodies is presented. Furthermore, the paper provides a new method for analyzing solid bodies. This new element is a simple truss, and a solid body is considered to consist of many such truss elements, then the solid body becomes a truss structure. Thus the internal forces and displacements of the solid body can be obtained by calculating this truss structure.

Keywords: solid body, element model, Elasticity, Hooke's law, truss element

Saint-Venant's Principle: Experimental and Analytical

Submitted by Jian-zhong Zhao on
research

Mathematical provability , then classi cation, of Saint-Venant's Principle are discussed. Beginning with the simplest case of Saint-Venant's Principle, four problems of elasticity are discussed mathematically. It is concluded that there exist two categories of elastic problems concerning Saint-Venant's Principle: Experimental Problems, whose Saint-Venant's Principle is established in virtue of supporting experiment, and Analytical Problems, whose Saint-Venant's decay is proved or disproved mathematically, based on fundamental equations of linear elasticity.

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