Atomistic and continuum modelling of temperature-dependent fracture of graphene
Abstract
Abstract
dear all : Ihave problem in dynamic buckling analysis in abaqus ,I simulated a shell part and put it between two rigid plates and next i put velocity on the one of the rigid plate for buckling-my value of velocity is 8.33e-5 and its very small value .now after the analysis the shell body was not crushed when i increase the value of velocity the crush will occur but i want crush will occur with this velocity and i dont know what do i.please help me.
hello Dear friends
I am working on large deflection of cantilevers with total lagrangian approach. my code is converged very well in cantilever with end point load but when I apply end moment the problem does not converged and tangent stiffness matrix became singular. if there is any special note that I ignored. please help me.
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I've been trying to simulate flow conditions at 100 km altitude over a re entry capsule in fluent.
Conditions are
Temperature:
168.7219
K
Density = 0.000000577 Kg/m3
Pressure = 0.0289 N/m2
I tried using laminar and k-w model. The solution does not converge even after 50000 iterations using the density based solver and ideal gas equation.
Is there a way to go about it?
Please let me know.
Dear Colleague: You are cordially invited to participate in the Nanobrücken 2014 Nanomechanical Testing Workshop, which will take place March 26-28, 2014 at INM - Leibniz Institute for New Materials in Saarbrücken, Germany. This will be the 4th edition of the annual Nanobrücken workshop series. This year's Keynote Speaker will be Andrew Minor (University of California, Berkeley).
The Department of Civil and Environmental Engineering at the National University of Singapore (NUS) is recruiting 2 post-doctorate research fellows to pursue research on ice-structure interaction in the Keppel-NUS Corporate Laboratory. As part of the S$75 million collaboration between Keppel Corporation and NUS, the team comprising of Prof. Andrew Palmer, Dr. Bai Wei, and Dr. Pang Sze Dai, seeks to develop solutions for offshore rigs to meet the challenges of harsh arctic environments in oil and gas exploration and production.
I have updated my notes on the Griffith paper. I added more description on the experimental determination of surface tension of solids. Griiffith himself determined the surface tension of glass by an experimental setup. Udin et al (1949) described a setup based on the same principle. This setup is now known as the zero creep experiment.