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A numerical study of elastic bodies that are described by constitutive equations that exhibit limited strains

Submitted by Alejandro Orti… on

Recently, a very general and novel class of implicit bodies has been developed to describe the elastic response of solids. It contains as a special subclass the classical Cauchy and Green elastic bodies. Within the class of such bodies, one can obtain through a rigorous approximation, constitutive relations for the linearized strain as a nonlinear function of the stress. Such an approximation is not possible within classical theories of Cauchy and Green elasticity, where the process of linearization will only lead to the classical linearized elastic body.

Numerical solution of fractional equation by using radial basis functions

Submitted by vrh59ir on

Abstract

In this paper, we implement the radial basis functions for solving a classical type of time-fractional telegraph equation defined by Caputo sense for (1<α≤2). The presented method which is coupled of the radial basis functions and finite difference scheme achieves the semi-discrete solution. We investigate the stability, convergence and theoretical analysis of the scheme which verify the validity of the proposed method. Numerical results show the simplicity and accuracy of the presented method.

 

Hierarchical Materials Symposium at USNCTAM 2014 - Abstract deadline is now January 6, 2014

Submitted by Tim Rupert on

Dear Colleagues,

 

The submission deadline for abstracts to the 17th U.S. National Congress on Theoretical & Applied Mechanics has been extended to Jan 6th, 2014.  Please consider submitting an abstract to at the website below.  We will be holding a symposium on "Elasticity, PLasticity, and Multiphysics of Hierarchical Materials: Mechanisms to Mechanics" that many of you should find quite interesting!

https://www.egr.msu.edu/conference/

 

Research Assistant in the Development & Processing of Polymeric Composite Materials via Liquid Resin Infusion

Submitted by Deirdre_Murphy on

The University of Limerick (UL) with over 13,000 students and 1,300 staff is an energetic and enterprising institution with a proud record of innovation and excellence in education, research and scholarship. The dynamic, entrepreneurial and pioneering values which drive UL’s mission and strategy ensures that we capitalise on local, national and international engagement and connectivity.  We are renowned for providing an outstanding student experience and conducting leading edge research.

Vicky Nguyen is named Editor of the iMechanica Journal Club

Submitted by Anonymous (not verified) on

Vicky Nguyen, of the Johns Hopkins University, is named Editor of the iMechanica Journal Club.  Vicky has a broad vision for mechanics, and has made contributions to diverse topics.  in 2008, she received the Presidential Early Career Award for Scientists and Engineers.  In 2013, she received the

Paper "A new generalized Drucker–Prager flow rule for concrete under compression" published

Submitted by Jinqing Bao on

This paper is on my work at Singapore. I think this paper has the following contributions

(1) A concise flow rule is proposed for concrete, every item in the flow rule has clear physical meaning

(2) Let us know that for any material, the flow rule can be simple, and we don't have to pay attention to the potential funcion.

(3) When we propose a plastity constitutive law, we don't have to rely on commercial software like 

Abaqus any more, as a numreical calibration method is introduced.

Deep Rolling simulation in ABAQUS

Submitted by farajzare on

Hi all

I want to simulate the deep rolling process(as seen as in attachment)

in this model I defined 2 steps,at first, the rigid ball create a pressure to cylinder to create residual stress and at the second step the ball begins displacement with

a low speed in direction of cylinder longitude to create surface overlap, while the cylinder is rotating in both steps.

in this model I have used the explicit solver but it takes too much time and elements convergence cannot be accomplished.

how can i reduce the time of my solution?

Scanning AC nanocalorimetry study of Zr/B reactive multilayers

Submitted by nanomicroscience on

The reaction of Zr/B multilayers with a 50 nm modulation period has been studied using scanning AC nanocalorimetry at a heating rate of approximately 1,000 K/s. We describe a data reduction algorithm to determine the rate of heat released from the multilayer. Two different exothermic peaks are identified in the nanocalorimetry signal: a shallow peak at low temperature (200 - 650°C) and a sharp peak at elevated temperature (650 - 800°C).