Smart Semi-finished Parts for the Application in Sheet-Metal Structures
Smart Semi-finished Parts for the Application in Sheet-Metal Structures
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适用于钣金结构的智能半成品零件
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Hensel
中科院分区：
文献类型：
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作者：
R. Neugebauer;L. Lachmann;W. Drossel;M. Nestler;S. Hensel
在许多工业领域，例如汽车工业，轻量化的概念越来越重要。其背景是自然资源日益短缺，同时对舒适性和安全性的要求也越来越高。通过轻量化概念的应用，提高了汽车的效率和行驶动力学。由于车身占总重量的30%，因此具有很大的减重潜力。金属薄板材料强度的增加使得汽车车身部件的厚度减小。使用相同的材料，这种减少导致结构刚度的降低。Adaptronic装置可用于局部影响刚度。传感器和执行器，例如基于压电陶瓷，允许检测和减少不必要的振动。像宏纤维复合材料（MFC）这样的压电模块的最新应用需要大量的手工操作。对于大批量生产，必须使用新的工艺链。本文提出了一种将压电模块应用于三维成形零件的方法。该应用程序在成形操作之前进行。压电模块的封装以不同的方式执行。除了双层金属板复合材料外，还可以使用局部应用的金属板或塑料薄膜。所提出的方法可以很好地保护压电模块免受汽车部件上飞溅的水和污垢等机械和化学影响。局部应用方法可显著减轻重量。
In many fields of industry, e.g. automotive industry, light-weight concepts are gaining in importance. The background is an increasing shortage of natural resources combined with increasing requirements for comfort and safety. Through the use of light-weight concepts the efficiency of automotive vehicles and the driving dynamics are improved. Because the car body has amounts to 30% of total weight, it offers high potential for weight reduction. An increasing strength of sheet metal materials allows the reduction of thickness of auto body parts. Using the same materials this reduction leads to a decrease of structural stiffness. Adaptronic devices can be used to influence the stiffness locally. Sensors and actuators, e.g. based on piezoceramics, allow the detection and the reduction of unwanted vibrations. The state of the art application of piezomodules like Macro-Fibre-Composites (MFC) is performed with significant manual work. For high-volume production a new process chain has to be used. The paper presents a method which allows the application of piezomodules on 3D-formed parts. The application takes place before the forming operation. The encapsulation of the piezomodule is performed in different ways. In addition to a double layered sheet metal-composite a local applied sheet metal or plastic film can be used. The presented method offers good protection of the piezomodule against mechanical and chemical influences like splash water and dirt on the automotive parts. The local application method leads to a significant weight reduction.