education

Nonlinear Analysis

Submitted by J. P. B. N. Derks on Tue, 04/28/2009 - 18:38

Hello,In order to nurture you in an effective manner regarding the Newton-Raphson method I recommend you to consult the excellent treatise of I. M. Smith et al. entitled "Numerical Methods for Engineers ", ISBN-13: 9781584884019.Furthermore this method is elegantly elaborated in Finite Element Formulation in the outstanding book of I. M. Smith indicated as "Programming the Finite Element Method ", ISBN-13: 9780470849705.In addition the geometrical nonlinear formulation is transparantly and completely detailed in the famous book of W. F. Chen et al.

Detonation &knocking

Submitted by shankar Gupta on Sat, 04/25/2009 - 15:54

education

hello dosto,

i am studying in B-tech 2nd year (mech.) in DCE . I want to know about detonation and knocking of fuels in detail.

thank you

shankar Gupta

Elementary Mechanics and Basic Engineering Thermodynamics

Submitted by James Pohl on Fri, 04/24/2009 - 18:39

education

Ask Dr Thermo

I suppose it is acceptable to announce the work I have online to assist students in learning mechanics and thermo. The site is http://www.askdrthermo.com/. Please take a look if you are interested.

boundary value problems

Submitted by iangill on Tue, 04/21/2009 - 14:28

Forums

Computational Mechanics Forum

Choose a channel featured in the header of iMechanica

education

Free Tags

stress analysis

Hi All, thanks in advance for any replies.

I am currently doing my Thesis on fast stress analysis using the boundary element method and specifically, adaptive cross approximation. I ofter come across the terms "single layer potential" and "double layer potential", i "know" what they are mathematically, i was wondering if anyone could give me an insight into what they mean physically, or just give a simple non mathematical definition? Thanks a lot, Ian.

Buckling of Stepped column

Submitted by GOPALAERO2000 on Mon, 04/20/2009 - 20:53

Hi everyone,

Does anyone have the work experience on stepped column kind of structure?

I would like to know, how to determine the crippling load for stepped column kind of structures? If anyone have the materials pertaining to the subject, please do share (if interested).

Thanks and Regards

M Gopalakrishnan.

Help with wind tunnel experiments

Submitted by abhisheks1989 on Sat, 04/18/2009 - 17:59

Forums

Fluid Mechanics Forum

Choose a channel featured in the header of iMechanica

education

Free Tags

Wind Tunnel Experiment

In our wind tunnel experiments, we have wake survey of a cylinder and boundary layer measurement for a thin flat plate as two experiments. We measure the stagnation pressure(Pt) at points using a pitot tube. We also measure the static pressure of the free stream Pinf.

Symmetry of Infinitesimal (linear) strain tensor

Submitted by Jayadeep U. B. on Wed, 04/15/2009 - 10:51

education

strain tensor

Hello everyone,

Why do we have the infinitesimal (linear) strain tensor to be symmetric? The reasons, which I have understood so far are:

1. It is defined to be symmetric so that it behaves like a tensor.

2. The stress tensor, which is its energy conjugate, is symmetric, and hence the skew-symmetric part has no contribution towards strain energy.

Can anyone suggest more fundamental reason(s) for the symmetry of linear strain tensor, like the moment equlibrium leading to symmetry of the Cauchy stress tensor?

Thanks in advance,