Shear jamming and nonlinear rheology of chocolate suspensions

[2510.21032] Shear jamming and nonlinear rheology of chocolate suspensions Skip to main content Search Submit Donate Log in Condensed Matter > Soft Condensed Matter arXiv:2510.21032 (cond-mat) [Submitted on 23 Oct 2025 ( v1 ), last revised 8 Jan 2026 (this version, v3)] Title: Shear jamming and nonlinear rheology of chocolate suspensions Authors: Michel Orsi , Veeraj Shah , Mahesh Padmanabhan , Thomas Curwen , Jeffrey F. Morris View PDF HTML (experimental) Abstract: We experimentally investigate the rheology of dark chocolate pastes in both industrially relevant pre-refined form and simplified model systems. Steady and oscillatory shear experiments reveal yielding, pronounced shear-thinning, and stress-dependent hysteresis governed by solid loading. Fitting the viscosity data with the Maron-Pierce model provides stress-dependent maximum flowable fractions $\phi_{\rm{m}}(\sigma)$, defining yield loci in the $(\phi, \sigma)$ plane. Their variation with stress quantifies the coupled roles of friction and adhesion in setting flow limits. Large-amplitude oscillatory shear tests characterize transitions from elastic to viscous behavior and identify distinct recovery pathways near jamming. Contact-stress decomposition separates hydrodynamic and frictional contributions, confirming that adhesive contact networks dominate stress transmission in pre-refined pastes. These results establish chocolate pastes as dense, adhesive suspensions whose flow is controlled by the interplay of friction and adhesion, offering quantitative benchmarks for constitutive modeling and linking chocolate processing to the broader physics of constraint rheology. Subjects: Soft Condensed Matter (cond-mat.soft) ; Fluid Dynamics (physics.flu-dyn) Cite as: arXiv:2510.21032 [cond-mat.soft] (or arXiv:2510.21032v3 [cond-mat.soft] for this version) https://doi.org/10.48550/arXiv.2510.21032 Focus to learn more arXiv-issued DOI via DataCite Related DOI : https://doi.org/10.1007/s00397-026-01546-x Focus to learn more DOI(s) linking to related resources Submission history From: Michel Orsi [ view email ] [v1] Thu, 23 Oct 2025 22:33:31 UTC (19,011 KB) [v2] Tue, 16 Dec 2025 10:40:46 UTC (19,875 KB) [v3] Thu, 8 Jan 2026 21:47:39 UTC (19,939 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.soft < prev | next > new | recent | 2025-10 Change to browse by: cond-mat physics physics.flu-dyn References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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