scholarly journals Summary of the LLNL one-dimensional transport-kinetics model of the troposphere and stratosphere: 1981

1981 ◽  
Author(s):  
D.J. Wuebbles
1981 ◽  
Vol 54 (3) ◽  
pp. 298-310 ◽  
Author(s):  
G. C. Gose ◽  
C. E. Peterson ◽  
N. L. Ellis ◽  
J. A. McClure

2011 ◽  
Vol 332 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Mohammad Kassemi ◽  
Robert Brock ◽  
Noel Nemeth

Soft Matter ◽  
2020 ◽  
Vol 16 (17) ◽  
pp. 4131-4141 ◽  
Author(s):  
Callie I. Higgins ◽  
Jason P. Killgore ◽  
Frank W. DelRio ◽  
Stephanie J. Bryant ◽  
Robert R. McLeod

Photo-tunable hydrogel mechanical heterogeneity using a single resin is presented here, informed by a predictive transport kinetics and swelling model.


Author(s):  
Aaron P. Wemhoff ◽  
Alan K. Burnham ◽  
Albert L. Nichols ◽  
Jaroslaw Knap

Thermal explosions result when local temperature-dependent heat generation exceeds heat loss via conduction. The temperature dependence of the heat source term is directly related to the material’s chemical kinetics, and hence the chemical kinetics has a direct impact on the thermal explosion times of a material. Much success has been gained in past work to accurately model thermal explosions in various explosives using multi-step Arrhenius chemical kinetics models. However, the generation of these kinetics models is time consuming and complex. Therefore, a methodology has been developed that allows for calibration of a single-reaction global kinetics model using One Dimensional Time to Explosion (ODTX) experimental data, which combines an iterative approach with a steepest descents optimization. This methodology has been applied to calibrate kinetic parameters for the widely-used explosives RDX (1, 3, 5-trinitrohexahydro-striazine), HMX (octahydro-1, 3, 5, 7-tetranitro-1, 3, 5, 7-tetrazocine), LX-10 (95% HMX, 5% Viton binder), and PBXN-109 (64% RDX, 20% Al, 16% binders). The average error between experimental and simulated ODTX and STEX data using this technique is approximately equivalent to that using the traditional multi-step models, and the time required for calibration of the global kinetics model has been reduced from months to hours.


2012 ◽  
Vol 47 (3) ◽  
pp. 341-352 ◽  
Author(s):  
James Kratz ◽  
Kevin Hsiao ◽  
Goran Fernlund ◽  
Pascal Hubert

Out-of-autoclave prepregs require a two-step cure cycle. The first step is a low temperature cure to consolidate the laminate and build sufficient green strength to proceed to the second step, a free-standing post-cure at traditional autoclave temperatures to fully cross-link the resin. Process modeling can help design a robust cure cycle to avoid scrapping large parts in production. The focus of this article is to develop the cure kinetics, viscosity, and glass transition temperature models for two commercially available out-of-autoclave epoxy resins. Since the cure kinetics model is the basis for all other thermal models, the cure kinetics model was validated using a one-dimensional heat transfer analysis on thick prepreg laminates. Finally, the out-of-autoclave resin models were compared to a traditional autoclave resin system to highlight the difference in resin reactivity for out-of-autoclave processing.


2001 ◽  
Vol 21 (2) ◽  
pp. 121-132 ◽  
Author(s):  
Daniele Fiaschi ◽  
Marco Michelini

2012 ◽  
Vol 370 ◽  
pp. 012040
Author(s):  
M Flores-Moreno ◽  
S Barocio-Delgado ◽  
A Mercado-Cabrera ◽  
R López-Callejas ◽  
R Peña-Eguiluz ◽  
...  

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