Monthly Archives: October 2024

Trading Spaces: Adaptive Subspace Time Integration for Contacting Elastodynamics

Ty Trusty, Yun (Raymond) Fei, David I.W. Levin, Danny M. Kaufman We construct a subspace simulator that adaptively balances solution improvement against system size. The core components of our simulator are an adaptive subspace oracle, model, and parallel time-step solver … Continue reading

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Simulating Thin Shells by Bicubic Hermite Elements

Xingyu Ni*, Xuwen Chen* (joint 1st authors), Cheng Yu, Bin Wang, Baoquan Chen In this study, we present the bicubic Hermite element method (BHEM), a new computational framework devised for the elastodynamic simulation of thin-shell structures. The BHEM is constructed … Continue reading

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A Time-Dependent Inclusion-Based Method for Continuous Collision Detection between Parametric Surfaces

Xuwen Chen, Cheng Yu, Xingyu Ni, Mengyu Chu, Bin Wang, Baoquan Chen Continuous collision detection (CCD) between parametric surfaces is typically formulated as a five-dimensional constrained optimization problem. In the field of CAD and computer graphics, common approaches to solving … Continue reading

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gDist: Efficient Distance Computation between 3D Meshes on GPU

Peng Fang, Wei Wang, Ruofeng Tong, Hailong Li, Min Tang Computing maximum/minimum distances between 3D meshes is crucial for various applications, i.e., robotics, CAD, VR/AR, etc. In this work, we introduce a highly parallel algorithm (gDist) optimized for Graphics Processing … Continue reading

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Polar Interpolants for Thin-Shell Microstructure Homogenization

Antoine Chan-Lock, Miguel A. Otaduy This paper introduces a new formulation for material homogenization of thin-shell microstructures. It addresses important challenges that limit the quality of previous approaches: methods that fit the energy response neglect visual impact, methods that fit … Continue reading

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Tencers: Tension-Constrained Elastic Rods

Liliane-Joy Yana Dandy, Michele Vidulis, Yingying Ren, Mark Pauly We study ensembles of elastic rods that are tensioned by a small set of inextensible cables. The cables induce forces that deform the initially straight, but flexible rods into 3D space … Continue reading

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Optimized shock-protecting microstructures

Zizhou Huang, Daniele Panozzo, Denis Zorin Mechanical shock is a common occurrence in various settings, there are two different scenarios for shock protection: catastrophic protection (e.g. car collisions and falls) and routine protection (e.g. shoe soles and mattresses). The former … Continue reading

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Computational Biomimetics of Winged Seeds

Qiqin Le, Jiamu Bu, Yanke Qu, Bo Zhu, Tao Du We develop a computational pipeline to facilitate the biomimetic design of winged seeds. Our approach leverages 3D scans of natural winged seeds to construct a bio-inspired design space by interpolating … Continue reading

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XPBI: Position-Based Dynamics with Smoothing Kernels Handles Continuum Inelasticity

Chang Yu, Xuan Li, Lei Lan, Yin Yang, Chenfanfu Jiang PBD and its extension, XPBD, have been predominantly applied to compliant constrained elastodynamics, with their potential in finite strain (visco-) elastoplasticity remaining underexplored. XPBD is often perceived to stand in … Continue reading

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Barrier-Augmented Lagrangian for GPU-based Elastodynamic Contact

We propose a GPU-based iterative method for accelerated elastodynamic simulation with the log-barrier-based contact model. While Newton’s method is a conventional choice for solving the interior-point system, the presence of ill-conditioned log barriers often necessitates a direct solution at each … Continue reading

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