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Solutions d'assemblages mecaniques pour I'allegement des structures multimateriaux

机译：机械公司的多国结构融合解决方案

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Body-in-white weight reduction strategy leads to introduce of a wide variety of materials which have either an improved mechanical strength, making possible to reduce thicknesses, or a lower density. A broad spectrum of materials and processing route is developed: cold-drawn or hot stamped sheets, extruded profiles, molded or thermoformed components, etc. The varied physical properties of the by-products before joining step require to consider new joining processes. The four years long project "SAM" developed at French institute of technology IRT M2P aims to explore new solutions to assemble steel and aluminum sheets. We present a panorama of the current "mechanical" processes as well as the equipment invested for a dedicated technological platform. We then focus more specifically on the description of two processes that allow an only one face access, i.e joining with high speed nails (tacks) or with flow drill screws. Issues such as the complexity of the process settings, resistance under static load, observed defects, non-destructive control, design constraints are then addressed. A comparative analysis taking into account the technical arguments and economic questions as well as technological locks finally makes it possible to conclude on the current ability of the process to be industrialized.
机译：身体白色减少策略导致各种材料引入具有改进的机械强度的材料，使得可以减少厚度或更低的密度。开发了广谱的材料和加工路线：冷拉或热冲压片，挤压型材，模塑或热成型组分等。在加入步骤之前，副产品的各种物理性质需要考虑新的加入过程。这四年的长期项目“Sam”在法国理工学院制定的IRT M2P旨在探索新的钢铁和铝板的新解决方案。我们提供了当前“机械”过程的全景以及投资专用技术平台的设备。然后，我们更具体地关注两个允许只有一个面部接入的过程的描述，即加入高速指甲（钉）或流动钻螺钉。然后解决了静态负载，观察到的缺陷，非破坏性控制，无损控制，设计约束等问题等问题。对比较分析考虑到技术争论和经济问题以及技术锁定最终使得能够在工业化过程中的当前能力结束。

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