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Cavity growth

Submitted by Zhigang Suo on
ES 242r
Spring 2004
Evolving Small Structures

A solid contains a spherical cavity, subject to a hydrostatic stress. For now, we assume that the solid is stiff so we ignore its deformation. The cavity can still change its size by a special mechanism: atoms diffuse through the solid between the cavity surface and the external surface. We will concentrate in this lecture on the question, Will the cavity shrink or enlarge? We will consider the diffusion process in some detail in the next lecture, and answer the question, How fast will the cavity change its size?

sample size and input materials properties in ABAQUS

Submitted by Anonymous (not verified) on

Hello everyone,

 I am not facing a problem now using ABAQUS/Explicit. The material size I used in ABAQUS is much smaller than I tested in the experiment. For example the yarn length I tested is 250mm and the yarn length in my model is only 10mm. Now I need to give the fracture energy of the yarn under impact. It would be very appreciated if you could help me to solve the problem. Many thanks.

 Sun

How does temperature become a number

Submitted by Zhigang Suo on
education
temperature

An essential step to “understand” thermodynamics is to get to know temperature: how temperature comes down as an abstraction from empirical observations, and how it rises up as a consequence of the fundamental postulate.  I have just updated my notes on temperature.  The beginning paragraphs of the notes abstract temperature from empirical observations.  These paragraphs are posted here.

Composite Plate Modelling in Ansys 9

Submitted by anuppydah on
modelling
ansys
composite plate

Hi..

 

I'm new  to Ansys.. I need to model a composite plate with a hole. It needs to have 5 laminated layers with different fiber orientations.

I've been through all similar queries here and have managed to understand how to model the layup (using the section -> shell method).

I have also modelled a sample plate with a hole.

I have also inputed the various material properties of each individual layer (through the Material Model editor).

BUT!! HOW DO I INTEGRATE THE LAYUP WITH THE SAMPLE PLATE ???.

How to Apply Torque in ANSYS

Submitted by hijazi on

  I want to do torsional analysis in ANSYS. The beam is hollow rectangular beam and the requirement is to rotate the beam in Z-direction. Can anybody guide me how to apply the torque?? I have applied the torque in the form of force but i am not satisfies with the results. Can anybody guide me how to apply torque??

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