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iMechanica: 9000 registered users, 30,000,000+ web hits

Submitted by Teng Li on

The number of registered users of iMechanica reached 9000 on 13 October 2008, after two years and one month since the website launch. The total number of posts is 4036, the total number of comments is 8888, and the total web hits is estimated to be more than 30,000,000.



Hosted at Harvard School of Engineering and Applied Science and maintained by a growing number of volunteers, iMechanica aims

Crack tip stress and formation of Plastic/influence zone for composite solid rocket propellant

Submitted by Yogesh Bansod on

Crack tip stress and formation of Plastic/influence zone for composite solid rocket propellants

The necessity to understand the crack behaviour of composite solid rocket propellants as it helps in analysis of service life of rocket motors. Experimental data reveals that a material’s microstructure at the crack tip can have a significant effect on the local damage near the crack tip and crack growth behaviour in particulate composites. 

Post Buckling of Thin Shells

Submitted by Himayat Ullah on

It is difficult to conduct post buckling analysis of thin shell under axial compression using Arc Length method in Ansys.

The Minimum & Maximum Arc Length radii are chosen by hit & trial.When imperfections are incorporated in the FE model,  some times the solution diverges at a higher critical load that the eigen value  buckling, which should be vice versa in actual. Some times , negative eigen values are also shown.

Is there any easy way to solve this nonlinear stability problem?

Himayat

Position: Post-doc at the Univ. of Auckland, New Zealand

Submitted by Biswajit Banerjee on

POSITION: POSTDOCTORAL RESEARCH FELLOW AT THE UNIVERSITY

OF AUCKLAND, NEW ZEALAND

Project Title: Advanced Modelling and Simulation of Closed Mould

Composite Manufacturing Processes

Applications are invited for a postdoctoral research position on composite manufacturing processes with the Liquid Composite Moulding (LCM) Group at the University of Auckland. The successful candidate will play a major role in developing the LCM group’s research into advanced composites manufacturing processes (including I/CM, Resin Infusion, VARTM, and RTMLight).

You are cordially invited to attend a reception in honor of Professor John W. Hutchinson

Submitted by Anonymous (not verified) on

You are cordially invited to attend a reception in honor of Professor John W. Hutchinson during the ASME International Mechanical Engineering Congress & Exposition.  Download a printable version of this invitation.

Monday, 3 November 2008, 7:30 pm to 9:30 pm

Room: Fairfax A/B, Sheraton Boston Hotel & Towers, 39 Dalton Street, Boston, MA, Phone:  617-236-6039