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Dear Engineers.

 I am Master degree student and I am trying to determine Young's Modulus of Hybrid Composite. Since I Don't have any material properties in detail of each part of mentiond composite, I chose an experimental tensile test with MTS machine to attain at Least Young's Modulus. The major problem which I have faced is that due to limitation on my sample, i can just prepare specimen for transverse tensile test based on ASTM standard which recommend geometrical dimensions for specimen.

The problem of statement of Saint-Venant's Principle is concerned.  Statement of Boussinesq or Love  is ambiguous so that its interpretations are in contradiction with each other. Rationalized Statement of Saint-Venant’s Principle of elasticity  is suggested to rule out the ambiguity of Statements of Boussinesq and Love. Rational Saint-Venant's Principle is suggested to fit and guide  applications of the principle  to  fields of continuum physics and cover the analogical case as well as the non-analogical case discovered and discussed in this paper .

Zanaboni Theory is mathematically analyzed in this paper. The conclusion is that Zanaboni Theorem is invalid and  not a proof of  Saint-Venant's Principle;  Discrete Zanaboni Theorem and Zanaboni's energy decay are inconsistent with Saint-Venant's decay; the inconsistency, discussed here, between Zanaboni Theory   and Saint-Venant's Principle  provides more proofs that Saint-Venant's Principle is not generally true.

Hello All:

I have written a UMAT code to predict the viscoelastic behaviour within a shape adaptive structure. I have followed similar steps used in Abaqus subroutine manual, I have applied this UMAT to a single quad element and it works as predicted. But when I apply it multiple elements model it breaks down. 

Is there any special command i need to put in UMAT subroutine to account multi element analysis? I will appreciate all related comments, 

Thanks

Effect of tornadoes on electrical power lines has been discussed by Sébastien Langlois in his M.Eng. thesis : “Design of Overhead Transmission Lines subject to Localized High Intensity Wind”. McGill University, Montreal, QC, Canada, 2007 (available on-line on the “Theses Canada” portal). Work presents various national and international standards (ASCE, Cigré, IEC etc.), historical cases, as well as models for numerical simulation.

Hellow everyone,

I've been studying XFEM method in Abaqus these days, then i want to model an inclusion problem to see the crack initiation and propagation at the interface. First i sketch a square to stand for a unit cell, then in order to assign different sections to inclusion and matrix, i cut a circle (circular inclusion) from the initial square. But when it comes to meshing, i don't know how to mesh the instance with structral quad elements independantly of the outline of the inclusion. Could anyone help me?