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Yonggang Huang's picture

NSF Summer Institute Short Course on Mechanics of Soft Materials

NSF Summer Institute Short Course on

Mechanics of Soft Materials

Co-sponsored by
The Intrenational Union of Theoretical & Applied Mechanics (IUTAM) and
The US National Committee of Theoretical and Applied Mechanics (US/NCTAM)

Organizers: Yonggang Huang and Wing Kim Liu, Northwestern University

Hilton Garden Inn, 1818 Maple Avenue, Evanston, Illinois, 60201
Dates: May 10 (Monday) morning to May 12 (Wednesday) morning 2010

ladanyi's picture

How to define pressure direction in ANSYS

Hi everyone,


I am quite new in ANSYS Classic and now I had to realize a serious problem. After building a steel frame from beam4 elements I tried to define pressure on beams.

I can not find the direction of the pressure. It could work in or perpendicular to the plane of the frame (for example).

Could anybody help me, how to define the direction?

Study Case of Crack Pipe

I want to try analyze cracked pipe based on API 579 fro my study. Is there anyone who have study case about cracked Pipe? Please send it to my email

Partial Dislocation Tutorial for FCC Metals

It is well known thatdislocations in FCC metals are composed of partial dislocations separated bystacking faults.  When consideringthe reactions of dislocations with each other, such as in DD simulations, it is necessary to determine therelative positions of the partials in order to correctly describe theconfigurations that are created in the reactions.  Here we describe a geometric method for correctly determiningthe relative positions of the partials. The results we obtain can also be found by applying an axiom, or rule,given in the book by Hirth and Lothe. At the end of this tutorial we

asit_rathod1's picture

Material Property Values

Dear All

I want to knnow what is the Strain VAlues at the SA-387(or 11/4 Cr 1/2 Mo Ni Si) plate at 940'F and in creep RAnge at time of 1000000 Hrs of to find Strain Values at SAme TEmp & Time and Diff loading of mtrls like 10,100, 1000 and So on..

Please Help...


Asit Rathod

export fe model from Abaqus to Ansys


is there anybody know how i can export a model from abaqus to ansys?

thank you Smile

best regards,

GOPALAERO2000's picture

Residual stress measurement

Hi Everyone,

 I would like to measure the residual stress imposed pattern through thickness of the plate by forming process (bending). Is it possible?

 I came to know that residual stress measurement through HOLE DRILLING METHOD offers only on the surface. That too, applicable only when residual stress imposed is uniform through thickness (like shot blasting process). If any one came across the experience of residual stress measurement, please throw some light in this regard.

 Thanks in advance

 M Gopalakrishnan

asit_rathod1's picture

Stress Defination

Hello All//

I am always confuing on that Stress is a point Function..and not Seen Physically Than Stress is a material Property or Material Behaviour?

Waiting For Answer..


Help regarding Tutorials on Creep using Abaqus

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My research area is modeling of creep in MMC. I am trying to use Abaqus for this purpose but I am unable to find any tutorial that can provide me some help that how to use creep module provided in Abaqus. Will any body can help me by providing some tutorial related to that topic. It will be highly apprecioated.



Project Tuva (Feynman's lecture series)

Here is an interesting link I came across while searching for the Feynman lectures -- Project Tuva.

It provides each of Prof. Feynman's seven lectures delivered at Cornell as a part of the Messenger lecture series. This format of posting lectures by Microsoft is absolutely amazing. I hope more such lectures especially videos of keynote lectures in leading conferences and congresses can be made available online.


Apply pressure load

How can you apply a pressure, not normal to a angled face in a 3D model in Abaqus? Is that possible? See sketch:      P --> /


Multiple cracks in ansys

One way of modelling multiple cracks in Ansys.

Taxonomy upgrade extras: 

enthalpy use

respected sir/madam

                              i have probla, how we put temp. depent. enthalpy valu in material type

modelling of rectangular composite plates using ANSYS

I have to analyse the carbon/epoxy composite laminate in ANSYS,  to determine the natural frequency of rectangular composite plates. The plate is simply supported . I  am not able to model the composite lay up with the correct orientation of the fibre. so any body have the step by step procedure for modelling the composite lay up in ANSYS and how to determine natural frequencies  please give it to me on my e-mail:

Two-point Tensors

I am confused about the use of two-point tensors in elasticity. The deformation tensor F and first PK tensor are two point tensors, and the "two-point" property arises from use of two different Coordinate System When a continuum body is deformed, why it is necessary to move the Coordinate System as well? (or alternatively, why the coordinate system is attached to the body itself??, isn't it possible to use a general coordinate system which can represent the deformations and also account for the rigid body rotations of the continuum body?).

free vibration mode shapes of beam (other than pinned-pinned) and finite strip method

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Hi everyone.

I'm working on my master thesis, dynamic analysis of plates using finite strip method.

I have found one problem (among others) that could be interesting to community.

In the attachment you can find example from Mathematica. There is 21 mode shapes of clamped-clamped beam. Recently i noticed that formulation given in every book about dynamics (Timoshenko, for example) isn't valid for higher modes for any beam that isn't pinned on both ends.

GOPALAERO2000's picture

Effect of surface hardness in tensile testing

Hi Everyone,

 Is is possible to account the surface hardness effect in the tensile testing specimen? If possible, how could it be acomplished?

For instance, I would like to establish the  stress strain curve for the material that used on surface hardened component. Will there be a big change if the surface hardness effect is considered on the tensile specimen?


Please throw some light in this regard.



M Gopalakrishnan

Muthukumar M's picture

How do find Inverse to Rectangular Matrix?

Dear All,

How do find the inverse of the rectangular matrix.

Fracture mechanics of concrete

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Do you have any class note regards fracture mechnaics of concrete or general fracture mechanics notes


Thank you

Rajdeep P Rajput's picture


I want to what exactly entropy means???I know the definition and formula but still not getting the physical significance.When we say temperature we can understand and feel it.But,in case of entropy each time I read about it I don't get it.Can anybody explore it's significance in easy way so that i can understand what exactly entropy means?

Zhigang Suo's picture

Lectures on Soft Active Materials, 2nd edition

In May 2008, I posted 3 lectures on Soft Active Materials given at UCSB.  I have since given similar lectures on other occasions, but never all three at the same place.  The field has been active.  The lectures have been updated with new items.  I’m now posting the “2nd edition” of these lectures.

  • Dielectric elastomers
  • Neutral gels
  • Polyelectrolyte gels
  • pH-sensitive gels 

The slides are posted as delivered.  No effort is made to eliminate repeating slides. 

Books for finite element method for implant and bone

Hi there,

I am new to Finite element method. I would like to know if their are any books for implants, bones and their interaction.

Thank you for your consideration.


Rabindra K. Patel's picture

Modeling of viscoelastic material in ANSYS

Any one can tell about the modelling of viscoelastic materials in ANSYS. In the modeeling how material properties can be given. Like I have material data in the form of Prony series parameter. If sone is having relaxation data how can that be fed to ANSYS model?




Hello all

plese if any one have informations about the crack propagation, using ansys package

hows we can using ansys to simulate th crack prpoagation with time.

i have aprobem

wait for u


hiader k. mahbes's picture

Plasticity and elasticity questions

 Dear AllI has question about these stresses.1.Are deviatoric stress generate plastic deformation?2. Are hydrostatic stress generate plastic deformation?3.What is the advantage of transferring strain tenser orientation to the principle coordinate axes? 4. What is the difference between rupture and fracture stress?


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