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Can we use constitutive relation at micro/macro scale to molecules scale ?

Submitted by BoJing Zhu on
Particles

Hi, everyone

 

Now I meet a problem, wish can obtain you help.

 

Now i do some research on multi-compose particle materials (eg. pharmaceutical science  materials)___predict the compressibility, compactibility, flow properties and  breakage behavior.

as we know, the molecular scale at 0.1-70nm scale and crystal growth process at 0.1-100nm scale, can i use the constitutive relationship at micro(=~um)/macro to analyze the performance and structure at this scale.

 

thanks ! 

2009 Nathan M. Newmark Medal

Submitted by Amit Pandey on
mechanician
Award

C. S. Desai Is Recipient of the 2009 Nathan M. Newmark Medal

http://www.u.arizona.edu/~csdesai/

Regents’ Professor Chandra Desai has been awarded the 2009 Nathan M.
Newmark Medal by the Structural Engineering and Engineering Mechanics
Institutes of the American Society of Civil Engineers.

http://www.asce.org/pressroom/honors/winners/?w=newmark

 

International Journal of Vehicle Structures and Systems (www.ijvss.maftree.org)

Submitted by vijay.koumar on

International Journal of Vehicle Structures and Systems (IJVSS) is a quarterly journal and is published by MechAero Foundation for Technical Research & Education Excellence (MAFTREE). MAFTREE is a non-profit organization based in Chennai (formerly, Madras), India and engaged in the promotion and advancement of technical education and research in the field of mechanical, aerospace and other branches of engineering. IJVSS endeavours to publish peer reviewed high quality original research and review papers, case studies, technical notes and book reviews.

LOW-CYCLE FATIGUE CRACK PROPAGATION IN ABAQUS USING XFEM

Submitted by Alberto.Garcia… on
ABAQUS
xfem
crack propagation
low cycle fatigue

 

Hi all,

 I´m traying to simulate a low-cycle fatigue crack growth in Abaqus 6.9 using xfem. My problem is to add the low cycle method to the xfem solution. 

I believe that the only current option for this would be to manually
create the loading curve and to do the analysis by a brute force
method but i may not be correct in this assumption however.

Please could someone explain a brief method.

i appreciate in advance.

 

 

Using beam3 element and plane82 element in ANSYS to analyse the curved beam bistable mechanism

Submitted by phamhuytuan on

I did the analysis for the snap-through of curve beam (this is a bistable mechanism) and using both "beam3 element" and "plane82 element" to find the force-displacement. However the obtained f-d curves are different between these two element.

May anyone give me some suggestions to deal with my problem ?  

Thank you !

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