ElastoGen: 4D Generative Elastodynamics

We present ElastoGen, a knowledge-driven AI model that generates physically accurate 4D elastodynamics. Unlike deep models that learn from video- or image-based observations, ElastoGen leverages the principles of physics and learns from established mathematical and optimization procedures. The core idea of ElastoGen is converting the differential equation, corresponding to the nonlinear force equilibrium, into a series of iterative local convolution-like operations, which naturally fit deep architectures. We carefully build our network module following this overarching design philosophy. ElastoGen is much more lightweight in terms of both training requirements and network scale than deep generative models. Because of its alignment with actual physical procedures, ElastoGen efficiently generates accurate dynamics for a wide range of hyperelastic materials and can be easily integrated with upstream and downstream deep modules to enable end-to-end 4D generation.

Authors

• Yutao Feng State Key Laboratory of CAD&CG, Zhejiang University University of Utah
• Yintong Shang University of Utah
• Xiang Feng State Key Laboratory of CAD&CG, Zhejiang University University of Utah
• Lei Lan
• Shandian Zhe
• Tianjia Shao State Key Lab of CAD&CG, Zhejiang University
• Hongzhi Wu State Key Laboratory of CAD&CG, Zhejiang University
• Kun Zhou State Key Lab of CAD&CG, Zhejiang University, Hangzhou, China
• Chenfanfu Jiang
• Yin Yang

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