Development of a shaft-hub-connection with a hub made of metal/ceramic-composite that meets defined requirements

开发轴毂连接，其毂由金属/陶瓷复合材料制成，满足规定的要求

• 批准号: 397981067
• 负责人: Professor Dr.-Ing. Hansgeorg Binz
• 金额: --
• 依托单位: Institut für Konstruktionstechnik und Technisches Design (IKTD)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/397981067?language=en
• 关键词: Development; shaft; hub; connection; made

As the expectations towards products in the engineering area rise, the requirements concerning the involved materials consequently increase as well. Therefore, besides the advancement of different kinds of steel, new material classes are considered. During the last years, great progress has been achieved especially in the area of metal/ceramic-composites. They combine the huge advantages of metals and ceramics. Compared to steel they are much harder and more wear-resistant, yet not as brittle as pure ceramics but to some extent ductile. Furthermore, they are relatively well machinable compared to ceramic materials. Their density (and with that inertia!) is usually lower than the density of steel. Because of their advantages, future applications are imaginable in areas of rotating parts such as turbo chargers and turbine impellers, of abrasive stressed parts or wear protecting elements. For a broad field of application, information about possible connections to existing steel structures is needed. This research has not been done yet. With knowledge of the exact mode of failure and specific design rules the use of metal/ceramic-composites in efficient, economic and failsafe shaft-hub-connections is possible. Accordingly, within the framework of this project the failure behaviour is considered from the theoretical-simulative perspective. The generation of simulation models of composites which describe the material properly allows the modelling of the complete shaft-hub-connection and thus the exploration of the permissible load. Experimental validations in every stage support the simulations. Parallel to the material testing, for the design-experimental dimensioning an interference fit will be modified for the composite. By adding positive locking elements and hence combining positive locked and friction locked force transmission, the interference fit is going to be improved to rise the transferable moment of the connection.

随着工程领域对产品的期望的提高，相关材料的要求也随之增加。因此，除了改进不同种类的钢材外，还要考虑新的材料类别。在过去的几年里，特别是在金属/陶瓷复合材料领域取得了很大的进展。它们结合了金属和陶瓷的巨大优势。与钢相比，它们更硬，更耐磨，但不像纯陶瓷那么脆，但在某种程度上具有延展性。此外，与陶瓷材料相比，它们的可加工性相对较好。它们的密度（以及惯性！）通常比钢的密度低。由于它们的优点，未来的应用是可以想象的旋转部件，如涡轮增压器和涡轮叶轮，磨料受力部件或磨损保护元件的领域。对于广泛的应用领域，需要有关与现有钢结构可能连接的信息。这项研究还没有完成。了解了确切的失效模式和特定的设计规则，金属/陶瓷复合材料在高效、经济和故障安全的轴-毂连接中使用是可能的。因此，在本项目的框架内，从理论模拟的角度考虑了破坏行为。复合材料仿真模型的生成适当地描述了材料，允许对完整的轴-毂连接进行建模，从而探索允许载荷。每个阶段的实验验证都支持模拟。与材料测试平行，对于设计-实验尺寸，将对复合材料的过盈配合进行修改。通过增加正锁紧元件，从而将正锁紧力和摩擦锁紧力结合起来，改善过盈配合，提高连接的可传递力矩。