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Transverse shear stresses in Reissner Mindlin theory

Submitted by r_n_s_s on

How is it possible to obtain the transverse shear stresses correctly, not constant, by Reissner Mindlin theory?

Equilibrium equation would be the first solution, but, once the second derivatives of bilinear shape functions are zero, no results is appeared.

 

Thanks in advance for any help!

Virtual Special Issue: 'Outstanding research contributions in the area of nonlinear continuum and computational mechanics'

Submitted by Laure Ballu on

The 2014 Nathan M. Newmark Medal was awarded to Professor Herbert A. Mang at the annual ASCE Structures Conference, which took place in Boston, April 3–5, 2014. Professor Mang was awarded the Newmark Medal for his outstanding research contributions in the area of nonlinear continuum and computational mechanics that clarified the cause of collapse of important concrete structures and quantified the influence of the initial post buckling behavior of metallic structures.  

 

One of the Most Productive Collaborations in Physicals Sciences of All Time

Submitted by ShuodaoWang on

Written by Kent McDill

posted in Illinois, Northwestern, LiveBIG (Big Ten Network July 20, 2014)

"Illinois, NU Create Self-Charging Heart"
http://btn.com/2014/07/20/btn-livebig-illinois-northwestern-create-self…

 

Ultra-Strong Collagen-Mimic Carbon Nanotube Bundles

Submitted by Zuoqi Zhang on

 In spite of worldwide research, carbon nanotubes (CNTs) still have not fully realized their

 original promise as ideal reinforcements for composite materials due to a number of

 challenging issues such as weak interface, poor dispersion, misalignment and lack of optimized

 design. Here we propose a bio-inspired structure of CNT bundles with controllable

 crosslink density and staggered pattern of organization that mimic the architecture of

Elastic Bounds of Bioinspired Nanocomposites

Submitted by Zuoqi Zhang on

 Biological materials in nature serve as a valuable source of inspiration for developing

 novel synthetic materials with extraordinary properties or functions. Much effort to date

 has been directed toward fabricating and understanding bio-inspired nanocomposites

 with internal architectures mimicking those of nacre and collagen fibril. Here we establish

 simple and explicit analytical solutions for both upper and lower bounds of the elastic