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Noncovalent bonds dictate cell rheology

Submitted by Ning Wang on

Over the last ten years, a peculiar behavior of living cells is revealed: their modulus increases weakly with loading frequency (the so-called weak power law behavior) (for a pure elastic solid, the slope is 0; for a viscous fluid, the slope is 1).  The underlying mechanism is not clear at all; although a phenomenological soft glass rheology model (a model based on a disordered structure system) has been proposed, it cannot explain the multi-power laws at different loading frequencies (see Stamenovic et al, Biophys J Letter, 2007). 

Runing of input file

Submitted by iitd.mani on

Dear friends,

if i have one input file i will import by file---model---inputfile

the i will see what they did in othermodules, for learning from exapmle problem

but if i have morethan one input file mean main input file and node information and element information both are seaprate input for reduc thesize of file.

how to import via part--model--

so how to merge this more than one input file 

thanks and regards

Mani

IIT Delhi

Reg-element deletion

Submitted by iitd.mani on

Dear Friends.

i am working on machining simulation.

when the element reaches the ultimate stress it should remove(chip flow) from part.

i used in input file

*shear failiure,type=johnson cook,Element deletion=yes

but still the removal is not good 

so what can i do.

and if need to erite usersubroutine in VUMAT

please give me some information about that

if any body having usersoubroutin for element deletion case pease send me

please please

Mani

shoremeter

Submitted by violetlover on

hello everybody.

 

ı am looking for relationship between shore D and shore A.Not a curve i need chart.I would be appreciated if you send me this diagram.I have some hypolon and PU roll .I am using  shoremeter  to see the hardness .

if you have you may send  violetlover [at] mynet.com (violetlover[at]mynet[dot]com)

 

have a nice day

gökhan

Equilibrium and stability of dielectric elastomer membranes undergoing inhomogeneous deformation

Submitted by Tianhu He on

Dielectric elastomers are capable of large deformation subject to an electric voltage, and are promising for uses as actuators, sensors and generators. Because of large deformation, nonlinear equations of state, and diverse modes of failure, modeling the process of electromechanical transduction has been challenging.  This paper studies a membrane of a dielectric elastomer deformed into an out-of-plane, axisymmetric shape, a configuration used in a family of commercial devices known as the Universal Muscle Actuators. 

Recommending a book on FSI with recent discussion on Immersed Boundary/Continuum Methods

Submitted by xwang on

I am writing to recommend my book “Fundamentals of Fluid-Solid Interactions-Analytical and Computational Approaches” recently published by Elsevier Science.  The book is available in amazon.com webpage  or Elsevier Science webpage.  The following is

Tom Milnes' First Blog Entry

Submitted by milnes on

Hi All,

--I have taken 3 previous courses in solid mechanics. 

--My undergraduate major was mechanical engineering, with a concentration in vehicle dynamics.

-- My strength is that I've had some of this material before.  My weakness is that I haven't seen it for a few years.

--I'm a masters student so I don't have a research group.  I do work part time for a hedge fund though.

--Solid mechanics will add an interesting dimension to my education. 

 

-Tom