[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-82861-en":3,"doc-seo-82861-105":29,"detail-sidebar-cat-0-en-105":91},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":13,"seo_description":14,"update_tm":27,"read_time":28},82861,2336464648322,"Aria","https://ap-avatar.wpscdn.com/avatar/2200025388227c56fec?_k=1778556882303663488",8,"Research & Report","Physics-Based Simulation of Contact-Induced Facial Wrinkling","Facial skin dynamics are difficult to simulate due to coupled geometric, material, and anatomical factors. Skin behaves as a nonlinear layered, spatially heterogeneous material whose compressive and shear contact can trigger mechanical instabilities, producing fine-scale wrinkles controlled by geometry, boundary conditions, and through-the-thickness stresses. A finite element framework is presented that models viscoelastic relaxation, resolves stress through the thickness with high-order solid-shell elements, and uses continuum skin ligaments to impose heterogeneous mobility constraints. Evaluation on synthetic cases and real-world footage shows temporally coherent, visually realistic wrinkle patterns during transient contact.","ACM SIGGRAPH / Eurographics Symposium on Computer Animation 2026 D. Levin and M. Chu  \n(Guest Editors)  \nCOMPUTER GRAPHICS forum Volume 45 (2026), Number 8  \nPhysics-Based Simulation of Contact-Induced Facial Wrinkling  \nJ. S. Montes Maestre 1, L. Kavan2, E. Boyer2, R. Goldade2, S. Coros 1 and B. Thomaszewski 1  \n1ETH Zürich, Switzerland  \n2Meta Reality Labs Research  \narXiv :2607 .04768v 1 [ cs .GR] 6 Jul 2026  \nFigure 1: Facial skin simulation on the temple (top) and forehead (bottom) regions. The initial states (left) are subjected to contact forces emulating the effect of a finger moving across the skin in the indicated direction (red arrows) . Comparing against real-world reference footage (right), the simulated results demonstrate the model’s ability to produce realistic wrinkling patterns with region-specific behaviors.  \nAbstract  \nFacial skin dynamics are inherently challenging to simulate due to a combination of geometric, material, and anatomical complexities. Human skin is a nonlinear layered material with spatially heterogeneous attachments to the underlying tissues. During contact events, localized compression and shear induce mechanical instabilities, leading to fine-scale wrinkling patterns governed by a delicate interplay of geometry, boundary conditions, and through-the-thickness stresses.  \nWe present a finite element framework to simulate contact-induced wrinkling of facial skin. We model skin as a viscoelastic material with time-dependent relaxation that governs the rate, persistence, and damping of wrinkle formation. We employ highorder prismatic solid-shell elements to resolve through-thickness stresses and high-frequency deformation modes. Central to our approach, we introduce a continuum-based formulation of skin ligaments to model heterogeneous skin attachments and provide anatomically inspired mobility constraints. These skin ligaments control the formation and appearance of facial wrinkles by modulating their amplitude, wavelength, and spatial distribution.  \nWe evaluate our method on a set of synthetic examples and compare simulations with real-world footage. These results demonstrate that our skin model produces temporally coherent and visually realistic wrinkle patterns during transient contact.  \nCCS Concepts  \n• Computing methodologies → Physical simulation; Mesh geometry models;  \n© 2026 The Authors.  \nComputer Graphics Forum published by Eurographics and John Wiley & Sons Ltd.  \n2 of 12 Montes Maestre, et al. / Physics-Based Simulation of Contact-Induced Facial Wrinkling  \n1. Introduction  \nRealistic simulation of facial skin dynamics remains a challenge in computational biomechanics and computer graphics. Unlike generic soft bodies, facial skin is a structurally complex, multilayered composite that exhibits highly non-linear behavior under deformation. Despite significant progress in simulating large-scale facial expressions, subtle transient mechanical interactions that occur during contact, such as a hand brushing against a cheek or a finger pressing into the forehead, remain difficult to capture. These interactions result in wrinkling phenomena that arise not only from the material properties of the tissue but also from the tissue’s constrained mobility due to the skin’s anatomical anchoring to underlying muscle and bone.  \nWhen skin is subjected to compression or shearing by external contact objects, local instabilities develop, manifesting as complex wrinkle patterns. These patterns are governed by a delicate balance between tissue stiffness, local geometry, and boundary conditions. Conventional thin-shell formulations often struggle to resolve these phenomena accurately because they neglect transverse shear and normal stresses through the thickness of the tissue. To capture the mechanics of contact-induced wrinkles, a simulation framework must resolve the stress state through-thickness of the skin while simultaneously respecting the heterogeneous mobility imposed by the fibrous ligamen","cbCaimG8zXixabxc","https://ap.wps.com/l/cbCaimG8zXixabxc","pdf",8541674,1,12,"English","en",105,"# Abstract\n# Introduction\n## Modeling challenges in facial skin dynamics\n## Finite element framework with higher-order solid-shell elements\n## Continuum-based skin ligament formulation\n## Viscoelastic response for temporal coherence","[{\"question\":\"Why is simulating contact-induced facial wrinkles challenging?\",\"answer\":\"Facial skin combines nonlinear layered geometry, spatially heterogeneous attachments, and complex material instabilities under compression and shear. Wrinkling depends on through-the-thickness stress states as well as anatomically constrained mobility, which conventional formulations often miss.\"},{\"question\":\"What finite element ingredients enable the proposed wrinkling simulation?\",\"answer\":\"The approach uses a finite element framework with high-order prismatic solid-shell elements to resolve through-thickness stresses and high-frequency deformation modes. Skin is modeled as viscoelastic with time-dependent relaxation to govern wrinkle formation, persistence, and damping.\"},{\"question\":\"How do skin ligaments affect wrinkle appearance in the model?\",\"answer\":\"A continuum-based formulation of skin ligaments models heterogeneous anatomical attachments where skin slides in some regions and is tightly tethered in others. These localized constraints modulate wrinkle amplitude, wavelength, and spatial distribution.\"}]",1784183504,30,{"code":4,"msg":30,"data":31},"ok",{"site_id":24,"language":23,"slug":32,"title":13,"keywords":33,"description":14,"schema_data":34,"social_meta":86,"head_meta":88,"extra_data":90,"updated_unix":27},"physics-based-simulation-of-contact-induced-facial-wrinkling","",{"@graph":35,"@context":85},[36,53,68],{"@type":37,"itemListElement":38},"BreadcrumbList",[39,43,47,50],{"item":40,"name":41,"@type":42,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":44,"name":45,"@type":42,"position":46},"https://docshare.wps.com/document/","Document",2,{"item":48,"name":12,"@type":42,"position":49},"https://docshare.wps.com/document/research-report/",3,{"item":51,"name":13,"@type":42,"position":52},"https://docshare.wps.com/document/physics-based-simulation-of-contact-induced-facial-wrinkling/82861/",4,{"url":51,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":62,"encodingFormat":60,"isAccessibleForFree":63,"interactionStatistic":64},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":40,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-07-17","2026-07-16",true,{"@type":65,"interactionType":66,"userInteractionCount":20},"InteractionCounter",{"@type":67},"ViewAction",{"@type":69,"mainEntity":70},"FAQPage",[71,77,81],{"name":72,"@type":73,"acceptedAnswer":74},"Why is simulating contact-induced facial wrinkles challenging?","Question",{"text":75,"@type":76},"Facial skin combines nonlinear layered geometry, spatially heterogeneous attachments, and complex material instabilities under compression and shear. Wrinkling depends on through-the-thickness stress states as well as anatomically constrained mobility, which conventional formulations often miss.","Answer",{"name":78,"@type":73,"acceptedAnswer":79},"What finite element ingredients enable the proposed wrinkling simulation?",{"text":80,"@type":76},"The approach uses a finite element framework with high-order prismatic solid-shell elements to resolve through-thickness stresses and high-frequency deformation modes. Skin is modeled as viscoelastic with time-dependent relaxation to govern wrinkle formation, persistence, and damping.",{"name":82,"@type":73,"acceptedAnswer":83},"How do skin ligaments affect wrinkle appearance in the model?",{"text":84,"@type":76},"A continuum-based formulation of skin ligaments models heterogeneous anatomical attachments where skin slides in some regions and is tightly tethered in others. 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