research

A computational model of hydrostatically coupled dielectric elastomer (HCDE) actuators

Submitted by Huiming Wang on Fri, 10/21/2011 - 01:07

Abstract:A hydrostatically coupled dielectric elastomer (HCDE) actuator consists of two membranes of a dielectric elastomer, clamped with rigid circular rings. Confined between the membranes is a fixed volume of a fluid, which couples the movements of the two membranes when a voltage or a force is applied. This paper presents a computational model of the actuator, assuming that the membranes are neo-Hookean, capable of large and axisymmetric deformation. The voltage-induced deformation is described by the model of ideal dielectric elastomer. The forc

A Theory for Large Deformation and Damage of Interpenetrating Polymer Networks

Submitted by Xuanhe Zhao on Thu, 10/20/2011 - 03:21

Interpenetrating Polymer Networks

double-network hydrogel

necking instability

Xuanhe Zhao

Soft Active Materials Laboratory, Duke University, Durham, NC 27708

Journal of the Mechanics and Physics of Solids, In press

Abstract

Designing copper–zirconium based nanowires for improving yield strength and plasticity via configuring surface atoms

Submitted by Vijay Kumar Sutrakar on Wed, 10/19/2011 - 16:52

atomistic simulations

design

nanowire

CuZr

Following our previous work on Cu-Zr nanowire system, in this paper we have shown improvement in various thermo-mechanical properties of nanowire via manipulating the surface atoms. The paper titled "Designing copper–zirconium based nanowires for improving yield strength and plasticity via configuring surface atoms" by Vijay Kumar Sutrakarand D Roy Mahapatra has been published in Journal of Nanoparticle Research. The paper can be downloaded from
http://www.springerlink.com/content/j2786222101mn711/

Mechanics of love and happiness

Submitted by Mike Ciavarella on Mon, 10/17/2011 - 15:18

An interesting application of non linear dynamics, including happiness with a simple 1D damped oscillator!

Cam Follower mechanism and Energy

Submitted by Jigar Y. Patel on Mon, 10/17/2011 - 10:50

research

Energy efficiency

cam follower mechanism

clean energy

You can find really interesting cam follower and energy research with practical prototype.

http://energyefficientmechanism.blogspot.com/2009/04/mechanism-to-incre…

http://www.youtube.com/watch?v=ZAKLGCZvlds&feature=player_embedded

I have added another video.

Electron Beam Irradiation Stiffens Zinc Tin Oxide Nanowires

Submitted by Xiaodong Li on Fri, 10/14/2011 - 22:51

research

Actuation of Microcantilever Using Light-Driven DNA Conformational Changes

Submitted by Kilho Eom on Fri, 10/14/2011 - 10:45

Conformational Change

Light Irradiation

Nanomechanical Actuation Driven by Light-Induced DNA Fuel

Kilho Eom, Huihun Jung, Gyudo Lee, Jinsung Park, Kihwan Nam, Sang Woo Lee, Dae Sung Yoon, Jaemoon Yang, and Taeyun Kwon

Abstract

how to find or evaluate the damage and critical damage

Submitted by anandjames on Fri, 10/14/2011 - 08:13

research

damage vs plastic strain graph

Hello Sir, I am doing research on the journal "A continuum damage mechanics model for void growth and micro crack initiation". In that i am modellling the cylinder with preneck. i have applied tensile load and found the induced stress. Now, I want to find out the damage and i need to plot the damage vs plastic strain graph and I dont know how to do it abaqus or ansys. Can u please guide me or let me know how to find out the damage and plastic strain and also suggest me the weblinks if there are any which tells about the evaluation of the damage?