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Characterization and Control of Plastic Deformation in Mesoscale Premolded Components to Realize In-Mold Assembled Mesoscale Revolute Joints

机译:中型预成型零件中塑性变形的表征与控制,以实现模内组装中型旋转接头

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摘要

This article reports a mold design strategy and a detailed mechanics-based modeling approach to characterize and control the plastic deformation of premolded components during in-mold assembly of mesoscale revolute joints. The following new results are reported in this article. First, a mesoscale mold design with varying cavity shape is described to perform inmold assembly of the mesoscale revolute joint. Second, a transient computational fluid dynamics (CFD) modeling approach to determine the forces experienced by the mesoscale parts due to injection molding is described. Finally, a mechanics-based model approach developed using a combination of experimental materials property data and the CFD results as input to a finite element simulation of the deformation response of the mesoscale part is presented for the determination of critical mold design parameters that are necessary for repeatable fabrication of articulating mesoscale revolute joints. Using the advances reported in this article a mesoscale revolute joint has been successfully molded. To the best of our knowledge, this is the first demonstration of in-mold assembly process using a varying cavity shape mold to create an articulating mesoscale revolute joint. [PUBLICATION ABSTRACT]
机译:本文报告了一种模具设计策略和一种基于力学的详细建模方法,以表征和控制中尺度旋转接头的模内组装过程中预成型组件的塑性变形。本文报告了以下新结果。首先,描述了具有可变腔体形状的中尺度模具设计,以执行中尺度旋转接头的模内组装。其次,描述了一种瞬态计算流体动力学(CFD)建模方法,用于确定中型零件由于注塑成型而承受的力。最后,提出了一种基于力学的模型方法,该模型方法是通过结合实验材料特性数据和CFD结果作为中尺度零件变形响应的有限元模拟输入来开发的,用于确定关键模具设计参数。铰接中尺度旋转关节的可重复制造。利用本文报道的进展,中尺度旋转关节已成功成型。据我们所知,这是模内组装工艺的首次演示,该工艺使用可变腔体形状的模具来创建铰接的中尺度旋转接头。 [出版物摘要]

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  • 来源
    《Polymer Engineering and Science》 |2009年第2期|p.293-304|共12页
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    Arvind Ananthanarayanan, Satyandra K. Gupta, Hugh A. BruckDepartment of Mechanical Engineering, University of Maryland, College Park, MarylandOpinions expressed in this article are those of the authors and do not necessarily reflect opinions of the sponsors.Correspondence to: Satyandra K. Gupta, e-mail: skgupta@eng.umd.eduContract grant sponsor: Army Research Office (MAV MURI Program), contract grant number: ARMY W911NF0410176, contract grant sponsor: NSF, contract grant numbers: DMI-0457058, OCI-0636164.DOI 10.1002/pen.21257Published online in Wiley InterScience (www.interscience.wiley.com).© 2008 Society of Plastics Engineers,;

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