Hi Prabhat, Bona will be following up on this question on this thread soon.
Thank you, Ruochun On Tuesday, May 14, 2024 at 5:29:08 AM UTC+8 [email protected] wrote: > Hi, I'm just following up on my message here. > > On Thursday, May 9, 2024 at 2:00:49 PM UTC-7 Prabhat Paudyal wrote: > >> Thank you Ruochun for letting me know. One more thing: when can we expect >> to see the demo script of the Goldenberg test example in the repo? I don't >> think it is there. >> >> Thanks, >> Prabhat >> >> On Tuesday, April 30, 2024 at 5:26:15 AM UTC-7 Ruochun Zhang wrote: >> >>> Hi Prabhat, >>> >>> It's published and can be found here >>> https://www.sciencedirect.com/science/article/pii/S001046552400119X?via%3Dihub >>> >>> Thank you, >>> Ruochun >>> >>> On Wednesday, April 3, 2024 at 3:27:46 AM UTC+8 [email protected] wrote: >>> >>>> Hi Ruochun, >>>> >>>> Thank you so much for your response. I would very much appreciate it if >>>> you notify me once the paper gets published. >>>> >>>> Thanks, >>>> Prabhat >>>> >>>> On Tuesday, March 26, 2024 at 3:29:16 AM UTC-7 Ruochun Zhang wrote: >>>> >>>>> Hi Prabhat, >>>>> >>>>> To answer your question: You probably see a warning in your output >>>>> file, >>>>> """" >>>>> WARNING! At least one clump is initialized with a position out of the >>>>> box domain you specified. >>>>> It is found at 0.378, 0, 0.076383 (this message only shows one such >>>>> example). >>>>> This simulation is unlikely to go as planned. >>>>> """ >>>>> This is the problem. It appears that the points you sampled live in >>>>> x∈[0, 0.4], but the x range of your simulation world is defined as >>>>> something like [-0.25, 0.25]. This will make the particles to be >>>>> initialized in unexpected locations, cause large initial penetrations, >>>>> and >>>>> then destabilize the simulation. I fixed the world size definition, and >>>>> it >>>>> seems to fix the problem. The extremely fine step size you are using is >>>>> not >>>>> necessary: The physics in this simulation is simple. >>>>> >>>>> By the way, in the upcoming paper about DEME >>>>> <https://arxiv.org/abs/2311.04648>, we will include a Goldenberg test >>>>> example, and provide the associated demo script. If you want, we can let >>>>> you know when it is officially published. >>>>> >>>>> Thank you, >>>>> Ruochun >>>>> On Tuesday, March 26, 2024 at 1:41:58 AM UTC+8 [email protected] wrote: >>>>> >>>>>> Hello everyone, >>>>>> >>>>>> I have been trying to replicate the 2D Goldenberg et al experiment >>>>>> <https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.89.084302> in >>>>>> DEME. It was replicated as a validation study for Chrono::GPU (as >>>>>> described >>>>>> in the 2021 paper <https://doi.org/10.3390/pr9101813>), so I figured >>>>>> it could be easily done in DEME too. However, I am having some issues >>>>>> with >>>>>> generating particles and having them settle under gravity. I have been >>>>>> using a nested for loop to generate the initial positions of particles >>>>>> and >>>>>> while I don't have any issues with the generation of positions (see >>>>>> attached paraview screenshot), I encounter the excessive velocity >>>>>> run-time >>>>>> error while settling the particles under gravity. I have tried to >>>>>> decrease >>>>>> the step size, increase the box domain dimensions to eliminate boundary >>>>>> effects, relax the physics (decrease the Young's modulus of the >>>>>> terrain), >>>>>> and increased the initial safety distance of the particles to no avail. >>>>>> >>>>>> I have attached my code to this message and I have been modifying the >>>>>> 2D ball drop demo. >>>>>> >>>>>> Thanks and regards, >>>>>> Prabhat >>>>>> >>>>> -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/c5afc7f3-2dfc-4c50-b2aa-92a65825207en%40googlegroups.com.
