Surface structuring to reduce friction & wear at low congruency ceramic sliding pairings

表面结构化以减少摩擦

• 批准号: 419981660
• 负责人: Professor Dr. Jan Philippe Kretzer
• 金额: --
• 依托单位: Klinik für Orthopädie und Unfallchirurgie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/419981660?language=en
• 关键词: Surface; structuring; reduce; friction; wear

The long-term objective is the universal use of textured ceramic-ceramic bearing couples for artificial joint replacement in order to improve the durability of the protheses. As part of the research project applied for, surface structures for favorable lubrication conditions and reduced friction are to be defined and optimized by analyizing the mechanisms of action. For this purpose, a complex an validated simulation model imitating an experimental test setup should be developed to analyze a variety of structures with regard to the mechanisms of action between the surface topography and the lubrication conditions and to derive optimal surface structures respecting active load collectives. The aim is to gradually approximate the geometry of anatomical joints and biomechanical load collectives in order to carefully evaluate the influence of varying structures. The simulation results are to be continously verfied and complimented by experimental friction and wear tests. In the applied research project, the results of the preliminary study should also be taken into account where for a flat-on-flat configuration with low surface pressure and dimple structuring, a friction reduction of 23% and a wear reduction of 48% could be achieved. The aim is to achieve for low-congruent contacts under complex, biomechanical load collectives. a final friction reduction of 40% and a reduction in wear of 60%

长期目标是普遍使用纹理的陶瓷陶瓷轴承夫妇进行人工接头替代品，以提高原面的耐用性。作为研究项目的一部分，应通过分析作用机理来定义和优化，用于有利的润滑条件和减少摩擦的表面结构。为此，应开发模仿实验测试设置的经过验证的模拟模型，以分析有关表面形貌和润滑条件之间作用机理的各种结构，并得出尊重主动负载集体的最佳表面结构。目的是逐渐近似解剖关节和生物力学负载集体的几何形状，以仔细评估不同结构的影响。仿真结果将持续通过实验摩擦和磨损测试来持续并补充。在应用研究项目中，还应考虑初步研究的结果，在低表面压力和凹陷结构的固定装置配置中，摩擦降低23％，磨损降低48％可能是成就了。目的是实现复杂的生物力学负载集体下的低一致接触。最终摩擦减少了40％，磨损减少了60％