arXiv:2410.19843eess.SYcs.LG2024-10综述被引 34

用AI解偏微分方程,加速力学模拟计算。

Artificial intelligence for partial differential equations in computational mechanics: A review

  • 融合数据与物理定律,用神经网络逼近方程解
  • 可处理固体力学、流体与生物力学中的复杂方程
  • 适合需要快速仿真但精度要求不极端的工程场景

近年来,人工智能(AI)在科学计算领域广泛应用,尤其在人工智能与传统科学融合(AI for Science)方向备受关注。其中,利用AI求解偏微分方程(AI for PDEs)成为计算力学的研究热点。其核心在于数据与偏微分方程的融合,能够近似求解几乎所有类型的PDE。本文系统综述了当前AI for PDEs的研究进展,涵盖基于物理信息神经网络(PINNs)、深度能量法(DEM)、算子学习和物理信息神经算子(PINO)等算法。该方法通过大量数据提供初步解,并依据物理规律进行微调,无需从零开始计算,显著优于传统数值算法。因此,AI for PDEs是未来计算力学基础模型的雏形,有望大幅提升科学仿真效率。

原文摘要 · Abstract (English)

In recent years, Artificial intelligence (AI) has become ubiquitous, empowering various fields, especially integrating artificial intelligence and traditional science (AI for Science: Artificial intelligence for science), which has attracted widespread attention. In AI for Science, using artificial intelligence algorithms to solve partial differential equations (AI for PDEs: Artificial intelligence for partial differential equations) has become a focal point in computational mechanics. The core of AI for PDEs is the fusion of data and partial differential equations (PDEs), which can solve almost any PDEs. Therefore, this article provides a comprehensive review of the research on AI for PDEs, summarizing the existing algorithms and theories. The article discusses the applications of AI for PDEs in computational mechanics, including solid mechanics, fluid mechanics, and biomechanics. The existing AI for PDEs algorithms include those based on Physics-Informed Neural Networks (PINNs), Deep Energy Methods (DEM), Operator Learning, and Physics-Informed Neural Operator (PINO). AI for PDEs represents a new method of scientific simulation that provides approximate solutions to specific problems using large amounts of data, then fine-tuning according to specific physical laws, avoiding the need to compute from scratch like traditional algorithms. Thus, AI for PDEs is the prototype for future foundation models in computational mechanics, capable of significantly accelerating traditional numerical algorithms.

AI for PDEs计算力学神经网络科学计算

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