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Frequency-Preserved Acoustic Diode Model with High Forward-Power-Transmission Rate

Submitted by Chang Liu on
research
acoustic metamaterials
elastic wave propagation
phononic crystals
nonlinear dynamics

Recently we published a paper in Physical Review Applied. It can be downloaded from the link

 http://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.3.064014

 Abstract of the article is below:

Journal Club Theme of July 2015: Reconfigurable metamaterials -- putting the holes in the right place

Submitted by shuyang on
research

Reconfigurable metamaterials -- putting the holes in the right place

 

Shu Yang1 and Jie Yin2

1Department of Materials Science and Engineering, University of Pennsylvania, E-mail: shuyang [at] seas.upenn.edu (shuyang[at]seas[dot]upenn[dot]edu)

Opening for new Ph.D. students in the Computational Mechanics group, The University of Iowa.

Submitted by Xuchun Ren on
research
computational mechanics | stochastic design optimization

The Computational Mechanics group at The University of Iowa, led by Professor S. Rahman, is looking for new Ph.D. students, who are capable of and interested in performing high-quality research on engineering design. The research, supported by National Science Foundation and others, entails building a solid mathematical foundation, devising efficient numerical algorithms, and developing practical computational tools for stochastic design optimization. A substantial background in solid mechanics and structural optimization is a must; exposures to stochastics and probabilistic methods are highly desirable.

If you are interested in pursuing a Ph.D. degree at Iowa, please contact and send a resume to: Professor Sharif Rahman at sharif-rahman [at] uiowa.edu. Please note that we are interested in students who already have M.S. degrees in engineering or mathematics. The desired start date is Spring 2016 or sooner.

Effective anisotropic stiffness of inclusions with debonded interface for Eshelby-based models

Submitted by Atul Jain on
research
Micromechanical modeling
fiber debonding
# Finite Element modeling

Recently we published a paper in Composite Structures. It can be freely downloaded from the link

http://authors.elsevier.com/a/1RGr0x-7hNgCX

Abstract of the article is below:

Fracture Mechanics implications for apparent static friction coefficient in contact problems involving slip-weakening laws

Submitted by Mike Ciavarella on
research
friction
static friction
kinetic friction
 

Fracture Mechanics implications for apparent static friction coefficient in contact problems involving slip-weakening laws

Manipulation of SDV in VUSDFLD subroutines

Submitted by PoojaShah on
research

I am trying to write a subroutine with VUSDFLD

I would like to manipulate the Solution Dependent Variables based on its previous value as follows:

Statenew(k,2)=Stateold(k,2)*10

But Multiplaction and Divisiion operations do not give any results. They give 'No value' when they are output.

Would anyone know why this happens?

 

Thank you.

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