蘑菇状纤维粘合剂动态脱落时的拉脱力建模

IF 3.4 3区 工程技术 Q1 MECHANICS
Ru-Guo Ji , Yue-Yu Yuan , Xiao-Feng Liu , Xiao-Long Zhang , Guo-Ping Cai
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引用次数: 0

摘要

纤维粘合剂作为一种新型仿生物可控粘合剂,在医疗器械、航空航天和机器人领域有着广阔的应用前景。评估此类材料的临界分离力(拉脱力),即建立拉脱力模型,是应用过程中需要解决的关键问题之一。实验结果表明,预紧力、停留时间和回缩速度是影响临界脱模力的关键因素。然而,目前还没有一个模型能考虑到这三个因素的影响。为了准确评估纤维状粘合剂的粘合性能,本研究以蘑菇形纤维状粘合剂(MFSA)为对象,对其拉脱力的建模问题进行了理论和实验研究。首先,我们基于 Gent & Schultz 假设和线性弹性断裂理论推导出了一个新的拉拔力模型。在该模型中,引入了相对接触面积来量化预紧力和停留时间对拉拔力的影响,并利用有效粘附功的速率依赖特性来描述回缩速度对拉拔力的影响。然后,对模型的有效性进行了实验研究。实验结果表明,本文的模型在参数识别后可以准确预测 MFSA 的拉脱力,从而验证了模型的有效性。最后,我们利用拉拔力模型研究了模型参数对拉拔力的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling the pull-off force of a mushroom-shaped fibrillar adhesive in dynamic detachment
Fibrillar adhesive, as a novel biomimetic controllable adhesive, holds broad application prospects in the fields of medical devices, aerospace, and robotics. Evaluating the critical detachment force (pull-off force) of such materials, that is, establishing a pull-off force model, is one of the key issues to be addressed in the application process. The experimental results show that preload, dwell time, and retraction velocity are key factors affecting critical detachment force. However, there is no model that can take into account the influence of these three factors. In order to accurately evaluate the adhesion performance of fibrillar adhesive, this study took mushroom-shaped fibrillar adhesive (MFSA) as the object and carried out theoretical and experimental research on the modeling problem of its pull-off force. First, we derived a new pull-off force model based on the Gent & Schultz hypothesis and linear elastic fracture theory. In this model, the relative contact area is introduced to quantify the impact of preload and dwell time on the pull-off force, and the rate-dependent properties of the effective adhesion work are used to describe the impact of retraction velocity on the pull-off force. Then, the validity of the model is experimentally investigated. The experimental results show that this paper’ s model can accurately predict the pull-off force of MFSA after parameter identification, thereby verifying the model’s effectiveness. Finally, we used the pull-off force model to study the effects of model parameters on pull-off force.
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来源期刊
CiteScore
6.70
自引率
8.30%
发文量
405
审稿时长
70 days
期刊介绍: The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.
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