Applying Anand versus Garofalo creep constitutive models for simulating sintered silver die attachments in power electronics

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-07-31 DOI:10.1177/03093247231190449

Mohammad A. Gharaibeh, J. Wilde

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Abstract

This paper aims to examine the thermomechanical response of sintered silver die attachments in power electronics using finite element analysis (FEA). In this work, several material parameters of the sintered silver bonds are investigated. Additionally, two common solder creep constitutive laws including Anand and Garofalo models are also studied. To ensure the fidelity of the simulation procedures, the finite element (FE) models are first correlated with digital image correlation data. Afterward, the FE models are utilized to examine the influence of the material and creep models on the die attach stresses, strains, and plastic works. The expected fatigue and lifetime predictions of the sintered silver layer are thoroughly discussed, accordingly. The results proved that the die attach layer mechanical response is highly driven by the material parameters and creep modeling procedures considered throughout the simulations. Thus, the resulting fatigue life is evaluated. Finally, a general modeling guideline for simulating thermomechanical response of sintered silver die attachments in power electronics are provided in great detail.

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应用Anand与Garofalo蠕变本构模型模拟电力电子烧结银模附件

本文旨在利用有限元分析方法研究电力电子设备中烧结银模具附件的热力学响应。本文对烧结银键的几个材料参数进行了研究。此外，还研究了两种常见的焊料蠕变本构规律，包括Anand模型和Garofalo模型。为了保证仿真过程的保真度，首先将有限元模型与数字图像相关数据进行关联。然后，利用有限元模型考察了材料模型和蠕变模型对模具附加应力、应变和塑性工作的影响。对烧结银层的预期疲劳和寿命预测进行了深入的讨论。结果表明，在整个仿真过程中考虑的材料参数和蠕变建模方法对模具附着层的力学响应有很大的驱动作用。因此，由此产生的疲劳寿命进行了评估。最后，详细介绍了模拟电力电子领域烧结银模具附件热机械响应的一般建模准则。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.