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Indentation Stress and Displacement Fields

Submitted by Jay Palaniappan on

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

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.

 

 

 

Creation of CRACK in 3D GEOMETRY

Submitted by ravikumar04333 on

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........

Swell induced surface instability of confined hydrogel layers

Submitted by Rui Huang on

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.