Functional Mock-Up Interface Support in Chrono

Functional Mock-Up Interface Support in Chrono | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Functional Mock-Up Interface Support in Chrono Radu Serban, Dario Mangoni This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6565111/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 10 Sep, 2025 Read the published version in Multibody System Dynamics → Version 1 posted 10 You are reading this latest preprint version Abstract Adoption of a standardized co-simulation model exchange interface offers several advantages, including "one-time only" code development for model encapsulation, access to existing or future subsystem models with no changes to the co-simulation framework, and access to proprietary models and libraries. While there are several attempts at providing standard interfaces for model coupling and model exchange, the Functional Mock-up Interface (FMI) is arguably the standard with the largest user base, advocated by a large number of academic, governmental, and commercial entities. For these reasons, we opted to adopt FMI and implement a new Chrono::FMI module to provide the necessary functionality to both wrap Chrono models and simulations in so-called Functional Mock-up Units (FMU) and couple Chrono simulations to FMUs. We target both FMI 2.0 (because of its widespread use) and 3.0 (for new capabilities, useful in creating FMUs for models with large intput/output bandwidth, such as deformable terrain and sensors).This contribution describes the utility general-purpose library \ftools, its use in Chrono::FMI, and illustrates the use of Chrono FMUs in vehicle co-simulation as well as coupling external FMUs to Chrono simulations. Functional Mock-Up Interface Project Chrono rigid and flexible dynamics co-simulation model exchange Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 10 Sep, 2025 Read the published version in Multibody System Dynamics → Version 1 posted Editorial decision: Revision requested 21 Jul, 2025 Reviews received at journal 30 May, 2025 Reviews received at journal 12 May, 2025 Reviewers agreed at journal 06 May, 2025 Reviewers agreed at journal 05 May, 2025 Reviewers agreed at journal 05 May, 2025 Reviewers invited by journal 05 May, 2025 Editor assigned by journal 30 Apr, 2025 Submission checks completed at journal 30 Apr, 2025 First submitted to journal 30 Apr, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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