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NMT Biomechanics Why is it better to be seaweed better than to be phytoplankton?

Submitted by Paul Calvert on

This is an introductory post to a discussion on the advantages of multicellular organisms over single-celled eukaryotes from an energy harvesting viewpoint.  It is intended for the New Mexico Tech biomechanics class but others can play.

As engineers we should seek for a numerical measure (or some measures) that allows us to decide how close an organism is to the optimum.  Consider two cases: a seaweed in comparison to a single-cell photosynthetic eukaryote and a herbivore in comparison to a single-celled eukaryotic animal.

Common questions about developing educational apps

Submitted by Julian J. Rimoli on

This afternoon, I had an extremely pleasant Google hangout with Daniel Suo, and Professors Zhigang Suo and Teng Li . Our main focus was on brainstorming ideas on how to improve the user experience on iMechanica. After an hour or so our conversation drifted towards educational topics including novel ways of incorporating technology in STEM education.



Textbook on linear algebra

Submitted by Zhigang Suo on

Linear algebra is significant to many aspects of mechanics.  For some years I have been using the book by Shilov.  But this book may or may not be a good one to recommend to a student, depending on his or her prior experience.  On StackExchange Mathematics, there are several excellent threads discussing textbooks of linear algebra.  A particular recommendation was made for

Residual stresses 2D to 3D

Submitted by HoneyVerma on
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Hello,

i have simulated welding in 2D model for beam attached with cover plates at both the flanges using Abaqus, now i want to use the same residual stress distribution for whole 3D cover plated beam with same cross-section,so that i can find load carring capacity of beam.

but i am not sure, is it possible to find stresses in 2D model then use the same residual stress in 3D model? i try using initial state and restart option but it is not reading the same stresses for whole lenght.so is there any other way of doing this??