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benjy marks

@benjymarks

Granular matter researcher. Teacher. VR enthusiast. https://nitter.gq/t.co/T7EXQ5tACw

 sydney
Joined April 2009
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Photo by benjy marks (@benjymarks)
Grain Days 2022! Registrations closing soon. Doctoral School: PhD students and colleagues, learn new tools and skills from ⁦@IEinav⁩, Giang Nguyen and Antoinette Tordesillas; visit the ⁦@ausynchrotron⁩, meet new friends (all nearly for free!!!) anagram.org.au/grain-days-20…
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Is there some way to complain about ARC expert reviewers? Got this lovely jewel in a recent application "...it is concerning that some top 10 publications include topics in education, rather than research outputs relevant to the project". I guess I can only research one thing...
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What's the best way to parallel park your car? theconversation.com/whats-th… via @ConversationEDU
What’s the best way to parallel park your car? Engineers have the answer

What’s the best way to parallel park your car? Engineers have the answer

On-street parking is an increasingly scarce resource as we take to our cars post-lockdowns. Here’s how to make the most of it.

theconversation.com
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*Grain Days 2021 - 29-30 Nov* Let us learn (a bit) about how to deal and analyse granular systems and about the amazing research by our graduate researchers. anagram.org.au/grain-days-20…
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Probably the most important piece of research done this century: journals.aps.org/pre/abstrac…
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benjy marks retweeted
Itai Einav (@IEinav) profile picture
Itai Einav@IEinav23 Feb 2021
Read about a brand new "Granular Thermometer": rdcu.be/cfFaP Thanks @benjymarks @scigem for producing the graphical abstract below:
Sydney Centre in Geomechanics and Mining Materials (@SciGEM_usyd) profile pictureSydney Centre in Geomechanics and Mining Materials@SciGEM_usyd23 Feb 2021
Replying to @IEinav
Love the graphical abstract!
Image from Sydney Centre in Geomechanics and Mining Materials (@SciGEM_usyd)
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Have you ever done triaxial testing and wondered how to correct for the effects of the membrane? The latest paper at opengeomechanics.org by Andrzej Niemunis and Lukas Knittel proposes a simple procedure for "Removal of the membrane penetration error from triaxial data"
Most triaxial tests are fraught with substantial membrane penetration errors. A simple correction procedure for data obtained from various tests is proposed. Correction formulas for the membrane penetration error have been derived for different types of tests including not perfectly saturated soils. In particular, a correction of the undrained cyclic stress paths is presented in detail. It is demonstrated that the correction for the membrane penetration error is indispensable for a realistic estimation of the cyclic resistance ratio in coarse- and medium-grained liquefiable soils. A Mathematica code for the correction of laboratory data is given. An analogous Matlab code is available from the authors. Without the correction many results could lie far on the unsafe side. This is the case especially for the undrained cyclic loading.

ALT Most triaxial tests are fraught with substantial membrane penetration errors. A simple correction procedure for data obtained from various tests is proposed. Correction formulas for the membrane penetration error have been derived for different types of tests including not perfectly saturated soils. In particular, a correction of the undrained cyclic stress paths is presented in detail. It is demonstrated that the correction for the membrane penetration error is indispensable for a realistic estimation of the cyclic resistance ratio in coarse- and medium-grained liquefiable soils. A Mathematica code for the correction of laboratory data is given. An analogous Matlab code is available from the authors. Without the correction many results could lie far on the unsafe side. This is the case especially for the undrained cyclic loading.

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At opengeomechanics.org you can read the latest paper by Kateryna Oliynyk and Claudio Tamagnini about a new "Finite deformation hyperplasticity theory for crushable, cemented granular materials"
Image from Open Geomechanics (@OGeomechanics)
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The latest paper in Open Geomechanics describes "A simple method for the determination of sensitivity to density changes in sand liquefaction" by Bozana Bacic and Ivo Herle at TU Dresden. Read it open access here: opengeomechanics.centre-mers…
Image from Open Geomechanics (@OGeomechanics)
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Done some earth shattering research you want to share with the world? Publish it #OpenSource at opengeomechanics.org, where it is free to read and publish.
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Dr Benjy Marks from the School of Civil Engineering has built an interactive city environment out of #LEGO in order to project real-time simulations of traffic 🚘 , pollution 💨 and water flow 💦. #usydonline
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Ever wanted to listen inside a sample as it is being pulled apart? The latest paper from Robert A. Caulk at opengeomechanics.org presents a new, open source method which you can try out yourself that couples image analysis, a discrete element model and the acoustic emissions.
Image from Open Geomechanics (@OGeomechanics)
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benjy marks retweeted
Peyman Ayoubi (@NamyepA) profile picture
Peyman Ayoubi@NamyepA5 May 2020
Why reviewers are anonymous when they can see the authors' names? Is there a particular reason for this? It would make sense to remove all the names in a manuscript before sending it to reviewers.
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Replying to @NamyepA
We at Open Geomechanics agree completely! We use a double blind peer review for all papers (reviewers and authors both don't know each other's names) and we also publish those reviews alongside the paper. See opengeomechanics.org for examples.
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Do you have some groundbreaking research in testing rocks to failure? Share your work #OpenSource at opengeomechanics.org, where it is free to read and free to publish. We now have three excellent papers published already, and more coming soon! #geomechanics
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Head to opengeomechanics.org to read the latest work by Fabian Schranz, Wolfgang Fellin and Dimitrios Kolymbas on "Comparative performance of some constitutive models in stress rotation". @IGT_Fellin @IGT_Kolymbas
Image from Open Geomechanics (@OGeomechanics)
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In the latest publication in Open Geomechanics, Prof Guy Houlsby introduces "Frictional Plasticity in a Convex Analytical Setting", where he develops a new mathematical terminology to describe plasticity. You can find this paper and more at opengeomechanics.org.
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Our first paper is now online! Please head to opengeomechanics.centre-mers… to read APS Selvadurai's latest work on "Proppant-Induced Opening of Hydraulically Created Fractures".
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University of Sydney researchers have developed a new x-ray method which involves solving a giant, three dimensional #sudoku problem to better understand these granular movements - and the findings could have a big impact on numerous industries. bit.ly/2KNJ6la
Image from Engineering Sydney Uni (@Eng_IT_Sydney)
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The science of landslides, and why they're so devastating in PNG theconversation.com/the-scie… via @ConversationEDU
The science of landslides, and why they’re so devastating in PNG

The science of landslides, and why they’re so devastating in PNG

Why is Papua New Guinea so susceptible to landslides? Steep terrain, earthquakes and aftershocks plus recent seasonal rains have created an environment that is prone to collapse.

theconversation.com
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