用分子模拟和有限元模拟研究了模塑-复合基材界面的水分传递和膨胀应力

2013 14th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) Pub Date : 2013-04-14 DOI:10.1109/EUROSIME.2013.6529958

O. Holck, J. Bauer, T. Braun, H. Walter, O. Wittler, B. Wunderle, K. Lang

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引用次数: 3

摘要

我们研究了利用分子动力学和有限元模拟相结合的方法来预测环氧树脂的湿气膨胀的能力，结果非常一致。关于分子模型和平衡条件的再现性、结构有效性、结构准确性和对结果的影响等仍存在一些悬而未决的问题，这将是未来研究的主题。但初步的研究结果有望促进对湿胀现象的理解。对界面处输运增强的研究结果表明，膨胀对界面处的应力有显著影响，但对块体中的浓度分布影响很小。对原因的讨论可能会引发进一步的实验和模拟研究，以更好地了解水分输送和膨胀的机制。

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Moisture transport and swelling stresses at moulding-compound substrate interfaces investigated by molecular modeling and finite element simulations

We have investigated the capability to predict moisture induced swelling of an epoxy by use of molecular dynamics in combination with finite element simulations with well agreeing results. Some open questions remain regarding reproducability, structural validity of molecular models and equilibrium conditions and structural acuracy and influence on the results, which will be subject of future investigations. But promising first results could be achieved which advance the understanding of the phenomenon of moisture induced swelling. Results on an investigation of enhanced transport at the interface showed a significant impact of swelling on the stresses at the interface, but only little influence on the concentration profile in the bulk. The discussion of the reasons may spark further experimental and simulative investigations to better understand mechanisms of moisture transport and swelling.

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2013 14th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE)

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