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Development of a layered composite material with one-sided stiffeners and thin damping layer and characterization of its formability

一种具有单面加强筋和薄阻尼层的层状复合材料的开发及其成形性能表征

基本信息

批准号：
262424410
负责人：
Professor Dr.-Ing. Mathias Liewald
金额：
--
依托单位：
Institut für Umformtechnik (IFU)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/262424410?language=en
关键词：
Development layered composite material sided

项目摘要

In this research proposal an approach for the development of a modern composite multilayer material is presented to save recourses and weight. This combines sound-absorbing properties with form elements of high stiffness and thus opens up new possibilities in order to maximize material utilization. A combination of good damping properties with specifically adjustable material-structure-combination by beads including a flat viewing surface will be enabled for the first time. Preliminary experiments have shown that it is in certain limits possible to form the new material and damping as well as the acoustic radiation behaviour compared to monolithic plates is very promising. In particular the oscillation behavior of stiffened elements is considerably improved, and the edge areas can be left flat, to allow hemming without delamination. As part of the proposed research project, there are thus working areas, such as the characterization of elastoplatic parameters for forming. Stamping operations are analyzed and methods are developed with regard to reduced springback. In addition, the stiffening potential is studied scientifically by different bead sizes and also the supporting effect of the flat cover plate in order to transfer them to a demonstrator component. The result of this research, therefore demonstrates the technological potential and the metal forming basics of such a composite layer consisting of one-sided integrated stiffeners.

本研究提出了一种开发现代复合多层材料的方法，以节省资源和重量。这将吸音性能与高刚度的形式元素相结合，从而开辟了新的可能性，以最大限度地利用材料。良好的阻尼性能与通过包括平坦观察表面的珠粒的特定可调节材料-结构-组合的组合将首次实现。初步实验表明，在某些限制下，可以形成新材料，与单片板相比，阻尼和声辐射行为非常有前途。特别是加强元件的振动性能得到了显著改善，并且边缘区域可以保持平坦，以允许卷边而不会分层。作为拟议的研究项目的一部分，因此有工作领域，如成形的弹塑性参数的表征。冲压操作进行了分析，并制定了减少回弹方面的方法。此外，还对不同尺寸的加强筋的加强潜力以及平板盖板的支撑效果进行了科学研究，以便将其转移到演示部件上。因此，本研究的结果表明，这种复合材料层的技术潜力和金属成形的基础，包括单侧集成加劲肋。