research

Covariance in Linearized Elasticity

Submitted by arash_yavari on Sun, 10/14/2007 - 22:27

In this paper we covariantly obtain the governing equations of linearized elasticity. Our motivation is to see if one can make a connection between (global) balance of energy in nonlinear elasticity and its counterpart in linear elasticity. We start by proving a Green-Naghdi-Rivilin theorem for linearized elasticity. We do this by first linearizing energy balance about a given reference motion and then by postulating its invariance under isometries of the Euclidean ambient space.

AFM modelling

Submitted by ravi5kumar on Sun, 10/14/2007 - 05:21

research

Hi, every body...

Can anyone please tell me about the kind of modelling that is done to study the Atomic Force Microscope (AFM) ?

I have gone through the lumped mass models, but I want to know about the distributed models ?

Is anyone having some papers or links related to distributed modelling of AFM ?

Thank You......

Smart composite detects and repairs airplane cracks

Submitted by BoJing Zhu on Sat, 10/13/2007 - 02:08

research

Smart composite detects and repairs airplane cracks

The New Scientist,Vol196,Issue 2624,6 October 2007,Page 32 Paul Marks

Ultrasonics cutting procedure

Submitted by anilathampy on Fri, 10/12/2007 - 09:35

research

Has some one done any research on Ultrasonics where they have used some softwares to do the simulation. I would like to know more about these cutting procedure especially when they interface with the human tissue. It would give me a better knowledge to proceed with my thesis .

MODELING OF FGM IN ABAQUS

Submitted by ravitejk4u on Thu, 10/11/2007 - 06:55

research

hello every one,

i am Ravitej, doing my Mtech at IIT kanpur, India. Now, i am working on FGM( funtionally Graded Materails). Can i model the FGM as a layered specimen with the youngs modulus varying according to layers. is there any special elements in abaqus, so that we can assign property variation along the thickness.

Problem that i had faced with the layerd model is

1) stress is not continous at the interface of layers, then how can we believe that the solution obtained is correct

Finite Deformation Mechanics in Buckled Thin Films on Compliant Supports

Submitted by Hanqing Jiang on Wed, 10/10/2007 - 05:06

research

Nonlinear buckling of thin,
high modulus plates on compliant

Critical Angle and Ultrasonic field

Submitted by samik das on Wed, 10/10/2007 - 04:51

research

velocity potential for a rate formulation

Submitted by Alessio on Mon, 10/08/2007 - 13:26

Forums

Ask iMechanica

Choose a channel featured in the header of iMechanica

research

Free Tags

elasticity

I have a question making me no sleep. In the elastic theory we have a separable Lagrangian L = T(v) + W(u) since we can write the internal elastic energy as a function of displacements. What happens if we use a rate form for the strain and the stress? Can we write the potential energy in terms of just velocities? If that is the case the stationary path of the Lagrangian reduces to:

d/dt (dT/dv - dW/dv) = 0

Ten commandments in systems biology

Submitted by Joseph X. Zhou on Wed, 10/03/2007 - 21:19

research

systems biology

bio-network

The 5^th European Conference
on Complex System is holding in Dresden, Germany now. This is really
an emerging research area. The multiple para-sessions themselves show
how diverse and multi-disciplined it is. It includes: