Blog posts

Surface Finish of Plastic Tubing With 3D Profilometry

Submitted by NANOVEA on Tue, 02/16/2010 - 22:04

The appearance and performance of a plastic component is highly contributed to surface finish. Monitoring surface finish for the intended parameters is crucial to the success of a plastic component both molded and machined. Insuring surface finish allows for the vast uses of plastic components and the environments they are found, ranging from medical to consumer goods, to electronics and cosmetics. For every use of a plastic component a specific surface finish parameter can be set to control its appearance and performance during environmental conditions.

Indentation Stress and Displacement Fields

Submitted by Jay Palaniappan on Tue, 02/16/2010 - 18:22

I am looking for stress and displacement fields for indentation of an elastic half-space with a rigid spherical indenter. Anthony C. Fischer-Cripps provides closed form expressions (no derivations) for stress fields in his textbook "Introduction to Contact Mechanics" (Chapter 5, Page 88-89). He cites the work of M.T. Huber[1] which is in German (Annalen der Physik, 1904).

Can someone point me to an English language reference for the analytical derivation of displacement and stress fields in the interior of the specimen ?

IOSO vs Genetic Algorithm (comparison on practical optimization problem)

Submitted by IOSOnier on Tue, 02/16/2010 - 14:35

research

IOSO

Genetic Algorithm

Multidimentional Optimization

Dear Colleagues,

Here we would like to offer you the summary from a published work concernign the optimization of industrial object. The work describes the application of parallel IOSO algorithms and parallel genetic algorithm PGA for the solution of optimization of 3D serpentine cooling passage inside a turbine blade.

Call for Abstracts: Mechanical Behavior of Low Dimensional Materials, MS&T 2010, Houston, TX

Submitted by Jun Lou on Mon, 02/15/2010 - 22:08

conference

We cordially invite you to submit an abstract to Symposium: Mechanical Behavior of Low Dimensional Materials at Materials Science & Technology 2010 (MS&T'10) to be held on October 17-21, 2010 in Houston, Texas. For submission, please go to http://174.120.122.245/program/technical-program. The deadline for abstract submission is March 15, 2010.

ABAQUS

Submitted by k_baskey on Mon, 02/15/2010 - 17:27

software

Hi,

I am doing project in Journal Bearing. I want to run Contact Analysis in ABAQUS to understand the Tribological properties. Could you please help me to learn the Contact Analysis in ABAQUS.

Thanking you.

Regards,

Basker. K

Creation of CRACK in 3D GEOMETRY

Submitted by ravikumar04333 on Mon, 02/15/2010 - 09:50

research

fracture mechanics

I am doing a project in FRACTURE MECHANICS.I completed doing the TASK in 2D geometries now i am facing a problem of creation of CRACK in 3D.. The most important thing is i need to execute in ANSYS only through GUI not through CODING.....PLZZZZZ....HELP ME....... I am attaching the MODEL also ... The model is a PRESSURE VESSEL..... Plz... help ...me......

PLEASE FIND THE ATTACHEMENTS BELOW OF MY MODELS........

fluid statics, (behaviour of lighter & heavier bodies in water) at constant acceleration

Submitted by petroengr on Sun, 02/14/2010 - 13:18

education

If a car filled with water is accelerated at uniform rate, and a heavy object is hanged by a string from the top of the car and a balloon with a string from the bottom of the car. What would be the direction of deflection of balloon & the heavy object. I would appreciate if someone could explain to me the phenomena of deflection, which would be helpful for me to better understand the topic please.

Swell induced surface instability of confined hydrogel layers

Submitted by Rui Huang on Sat, 02/13/2010 - 04:35

research

R. Huang Group Research

hydrogel

surface instability

soft materials

A previous work suggested a critical condition to form surface creases in elastomers and gels. For elastomers, the critical condition seems to have closed a gap between experimental observations (e.g., by bending a rubber block) and the classical instability analysis by Biot. For gels, however, experiments have observed a wide range of critical swelling ratios, from around 2 to 3.7. Here we present a linear perturbation analysis for swollen hydrogels confined on a rigid substrate, which predicts critical swelling ratios in a similar range.