栓接结合部动态特性研究进展

Review on Dynamic Properties of Bolted Joints

栓接结合部是机床中最为典型的一种结合部形式,其影响因素众多,作用机理极其复杂,直接影响机床的整体性能,研究其动静态特性对整机的创新设计和自主研发具有重要意义。在过去三十多年时间里,众多学者开展栓接结合部特性研究,进一步明确了其内部机理和主要影响因素,但真正建立其本构模型、获取通用性数据仍存在困难,因此,有必要对现有研究成果进行系统分析和深入总结。早期研究是从栓接结合部等效线性化特性开展,近些年来其非线性特性越来越受到重视,这是由栓接结合部具有强非线性特性的本质决定的。以这两种研究思路为脉络,从栓接结合部的基础试验及理论研究、物理模型建立及参数辨识和工程应用展开综述,比较各研究提出的假设及其优缺点,总结研究所存在的不足,并对未来研究趋势进行展望。

Bolted joints are the most typical form of a combination of department in the machine. The mechanism of bolted action is extremely complex, which is determined by many factors. While it plays a critical role in the overall performance of the machine, to study the static and dynamic characteristics is of great significance for the national machine＇s innovative design and independent research and development. Over the past three decades, the characteristics of bolted joints are figured out, and its internal mechanism and main factors are clarified, but it is far away from truly establishing the constitutive model and obtaining common data. Therefore, a systematic analysis and of a summary the existing research results is made. Early studies concentrate on the equivalent linearization of bolted joints characteristics. In recent years, most researchers turn to study the nonlinear characteristics for the nature of strong nonlinearity of bolted joints. Based on the two directions, experimental and theoretical study, physical modeling and parameter identification, and the engineering applications of early research of bolted joints are reviewed. The assumptions and their advantages and disadvantages are compared, the current shortcomings of the studies are summarized, and future research prospects are concluded.