阻尼器
粘弹性
消散
刚度
振动
实验数据
稳健性(进化)
人工神经网络
物理
统计物理学
计算机科学
结构工程
控制理论(社会学)
工程类
人工智能
数学
统计
基因
热力学
量子力学
化学
生物化学
控制(管理)
作者
Qiang‐Qiang Li,Zhao‐Dong Xu,Yao‐Rong Dong,Zhenhua He,Xiao Yan,Bin Wang,Yongchun Guo
标识
DOI:10.1142/s0219455424500718
摘要
Traditional physics-based mathematical models of viscoelastic (VE) damper often exhibit different degrees of prediction errors under complex working conditions, whereas data-driven approaches have shown significant potential for overcoming such problems, and have not been introduced into any study to describe the dynamic mechanical properties of VE damper. In this paper, the architecture of microsphere model is adopted to represent the spatial distribution of molecular chain structure of VE damping material, which is categorized into free chains and elastic chains. Then, the physics-informed neural network surrogates are introduced to describe the statistical stress–strain behaviors of free chains and elastic chains. Finally, by constructing the physics-constrained loss function based on the combination of physics-based model and data-driven model, a physics-constrained data-driven model is proposed to characterize the dynamic mechanical behaviors of VE damper used for structure vibration control. Based on the existing experimental data, the prediction ability and robustness of the proposed model are comparatively verified, the results reveal that the proposed model can accurately reflect the stiffness and energy dissipation of VE damper under different ambient temperatures, excitation frequencies, and deformation conditions. This study proves the potential of physics-informed neural network theory in characterizing the complex mechanical behaviors of VE damper.
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