热塑性复模件界面的热力学一致耦合模型

IF 7.3 1区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Junhe Cui , Tiansheng Liu , Michele Valsecchi , Martin Giersberg , Hakan Çelik , Jaan-Willem Simon , Sanat Kumar , Jan Petersen , Jacob Fish
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引用次数: 0

摘要

在覆模组件中实现不同半晶聚合物之间的可靠粘合仍然是先进制造中的一个关键挑战,对结构完整性、工艺效率和材料设计具有重要意义。这项工作引入了一个转型的,热力学一致的多物理场框架,首次捕获了热传导,结晶,变形和纳米级聚合物扩散之间的完全耦合,在覆盖成型过程的冷却阶段。该框架通过将工艺引起的残余应力、界面结晶度和聚合物相互渗透整合到一个断裂性能动态演变的内聚区模型中,将制造条件与最终产品的机械性能严格联系起来。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermodynamically consistent coupled chemo-thermo-mechanical model of interfaces in overmolded thermoplastic parts
Achieving reliable bonding between dissimilar semicrystalline polymers in overmolded components remains a critical challenge in advanced manufacturing, with significant implications for structural integrity, process efficiency, and material design. This work introduces a transformational, thermodynamically consistent multiphysics framework that, for the first time, captures the full coupling between heat conduction, crystallization, deformation, and nanoscale polymer diffusion during the cooling stage of the overmolding process. The framework rigorously links manufacturing conditions to the mechanical performance of the final product by integrating process-induced residual stresses, interfacial crystallinity, and polymer interpenetration into a cohesive zone model whose fracture properties evolve dynamically.
Unlike existing approaches, which rely on phenomenological models or decoupled analyses, our formulation provides predictive capability grounded in continuum thermodynamics and validated by experimental observations. This enables not only the detection of manufacturing-induced interfacial defects but also virtual process optimization through simulation. The resulting model serves as a digital twin for overmolded thermoplastics, offering a powerful new tool for engineering high-performance composite parts in automotive, aerospace, and biomedical applications.
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来源期刊
CiteScore
12.70
自引率
15.30%
发文量
719
审稿时长
44 days
期刊介绍: Computer Methods in Applied Mechanics and Engineering stands as a cornerstone in the realm of computational science and engineering. With a history spanning over five decades, the journal has been a key platform for disseminating papers on advanced mathematical modeling and numerical solutions. Interdisciplinary in nature, these contributions encompass mechanics, mathematics, computer science, and various scientific disciplines. The journal welcomes a broad range of computational methods addressing the simulation, analysis, and design of complex physical problems, making it a vital resource for researchers in the field.
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