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.

随着对工程领域产品的期望的提高，对相关材料的要求也随之提高。因此，除了不同种类钢的进步外，还考虑了新的材料类别。近年来，金属/陶瓷复合材料的研究取得了很大进展。它们联合收割机结合了金属和陶瓷的巨大优势。与钢相比，它们更硬，更耐磨，但不像纯陶瓷那样脆，但在一定程度上具有延展性。此外，与陶瓷材料相比，它们具有相对良好的可加工性。它们的密度（以及惯性！）通常低于钢的密度。由于它们的优点，未来的应用可以想象在诸如涡轮增压器和涡轮机叶轮的旋转部件、磨损应力部件或磨损保护元件的领域中。对于广泛的应用领域，需要有关现有钢结构可能连接的信息。这项研究尚未完成。通过了解确切的失效模式和具体的设计规则，可以将金属/陶瓷复合材料用于高效、经济和故障安全的轴毂连接。因此，在该项目的框架内，从理论模拟的角度考虑故障行为。正确描述材料的复合材料仿真模型的生成允许完整的轴毂连接的建模，从而探索允许的载荷。在每个阶段的实验验证支持模拟。与材料测试平行，对于设计-实验尺寸，将修改复合材料的过盈配合。通过增加刚性锁紧元件，将刚性锁紧和摩擦锁紧力传递相结合，改善了过盈配合，提高了连接的传递力矩。