Problem
Research questions and friction points this paper is trying to address.
transient heat transfer
automated tape laying
composite manufacturing
radiative heat flux
mixed convection
Transient multimode heat transfer of an industrial automated tape laying process under rapidly changing conditions
🤖 AI Summary
该研究通过建立包含对流、传导、辐射的瞬态热传递模型，解决了复合材料制造中传统热模型的局限性问题。
📝 Abstract
This work presents a transient heat-transfer model of an industrial automated tape laying (ATL) process designed to overcome the limitations of conventional thermal models in composite manufacturing. The model solves the heat-conduction equation with coupled advection, conduction, convection, and radiation. A key innovation is the implementation of an analytical view factor approach that accounts for finite emitter and tape widths, thereby correcting systematic overestimations of radiative heat flux inherent in 1.5D simplifications. Furthermore, a local convection assessment incorporates mixed convection effects characterized by the Richardson number, ensuring accuracy across a wide range of process speeds. The ATL system is represented by two interacting subsystems: the moving tape substrate and the infrared heat sources. The tape is discretized using a two-node model that resolves the physical phase shift between the heated and monitored surfaces. Numerical stability under high dynamics is ensured by a monolithic solution strategy using a high-order implicit integration scheme. Model predictions were validated on an industrial ATL line, demonstrating an overall deviation of only 1.08% (NRMSE) under rapid velocity and current modulations. This framework provides a high-fidelity, physics-based foundation for thermal state estimation, supporting consistent in-situ consolidation and improved part quality.
Innovation
Methods, ideas, or system contributions that make the work stand out.
analytical view factor approach
Richardson number
two-node model
high-order implicit integration scheme
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