相关实验视频
Updated: Jan 7, 2026

09:17
Surrogate Model Development for Digital Experiments in Welding
Published on: March 28, 2025
1.8K
一个基于PIKAN的模型,用于预测件的温度场
Qichao Zhao1, Baiqiao Wang2, Jinwu Kang3
1School of Materials Science and Engineering, Key Laboratory for Advanced Materials Processing Technology, Tsinghua University, Beijing, 100084, China.
Scientific reports
|December 30, 2025
概括
本研究引入了一种深度学习模型,用于预测造过程中的温度场. 皮坎模型实现了高精度,为工业优化提供了一种新的模拟方法.
科学领域:
- 材料科学 材料科学 材料科学
- 计算工程 计算工程 计算工程
- 人工智能的人工智能
背景情况:
- 温度场的数值模拟对于优化造过程至关重要.
- 深度学习为工业模拟提供了一个有前途的新方法.
研究的目的:
- 开发和评估一种深度学习模型,用于预测造固化过程中2D温度场的演变.
- 探索人工智能在工程模拟中的应用.
主要方法:
- 提出了一个新的PIKAN (物理信息知识增强网络) 模型,利用多层感知器 (MLP) 进行时空参数输入.
- 在培训期间,采用了混合损失函数,将物理和数据损失结合起来.
- 用贝叶斯优化来确定最佳重量参数.
- 对各种造几何形状的预先培训提高了模型预测效率.
主要成果:
- 皮坎模型的平均温度误差为5.62K,远低于10K的临界值.
- 该模型在预测温度场的平均准确率为88.74%.
- 预训练显著提高了预测效率.
结论:
- 深度学习,特别是PIKAN模型,可以有效地预测造固化中的温度场演变.
- 这种方法支持将先进的人工智能技术集成到工程实践中,以优化流程.
相关概念视频
Temperature Dependent Deformation
343
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
343
Absorption of Radiation
1.2K
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
1.2K
Mechanisms of Heat Transfer I
5.9K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
5.9K
Mechanisms of Heat Transfer II
4.1K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
4.1K
Temperature and Thermal Equilibrium
9.0K
Heat and temperature are essential concepts for everyone every day. The study of heat and temperature is part of an area of physics known as thermodynamics. It is not always easy to distinguish heat and temperature.
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
9.0K
Mechanism of heat transfer
1.8K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.8K

