... Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition November 11-16, 2001, New York, NY DE-Vol. 114 IMECE2001/DE-25100 A STUDY OF EARLY STAGE SELF-LOOSENING OF BOLTED JOINTS Yanyao Jiang, Bin Huang, Hua Zhao University of Nevada, Mechanical Engineering (312), Reno...

...Abstract Abstract A bolted joint is one of the most common fastening techniques. While the behavior of bolted joints under static or quasi-static conditions is well documented, their behavior under shock/impact loading is not well-understood. In many applications, where a bolted joint connects...

...Abstract Abstract When tightening a large number of bolted joints, the calibrated wrench method is used. Since this method is indirect, the axial tension varies greatly in many cases. However, the calibrated wrench method is still widely used because of the simplicity of the tool and easy...

... and a load when the interfaces start to separate were carried out. The FEM results are fairly coincided with the experimental results. Finally, based on the obtained load factor, a design method for bolted joints with dissimilar circular flanges is demonstrated for determining the nominal bolt diameter...

... the entire production line. This contribution entitles the reasons for the origin of torque vibrations as well as advices for elimination. Automatized screw assembly friction contact mechanics bolted joints torque vibrations stick-slip drive train stiffness assembly process material surface...

... weight design no simple approximation of the loading capacity with significant over-dimensioning is possible. Furthermore, the short-time tribology of mechanical contacts plays an important role during tightening of bolted joints, especially when using light metals and coated surfaces. Still today...

... 1 Copyright © 2012 by ASME THE SLIPPAGE ANALYSIS AT BEARING SURFACE OF BOLTED JOINTS DUE TO CYCLIC TRANSVERSE LOADS Linbo ZHU Jun HONG Guoqing YANG Baotong LI Zhaohui YANG State Key Laboratory for Manufacturing Systems Engineering, Xi an Jiaotong University, Xi an 710049, PR China ABSTRACT Bolted...

... 02 08 2012 Bolted joints are a major part of wind energy plants. Due to climatic conditions, they are often exposed to temperatures far below the freezing point. Together with the multiaxial state of stress, which results from the notch effect of the thread, and possible dynamic...

... 02 08 2012 The title of this paper covers two questions: a) Which items have to be considered for ‘Standardized Calculation’? b) Which ‘requirements’ have to be focused in future? The contribution starts with the fundamental approach of bolted joint mechanics, looks to the focus...

... and to significant improvements — the design of an optimized screw joint for tomorrow looks largely different compared to a traditional bolted joint calculation. Focusing transverse loads especially shape based joint design is suitable for highest loading capacity. Due to this it is necessary to investigate...

... related criteria when designing fastened component systems with transverse loading. Numeric stress analysis with FEA calculates a detailed stress distribution with significant inhomogeneities. The reasons for increased sensitivity of light materials get obvious. Often bolted joints are used to realize...

... 18 01 2008 In this paper, the evolution equations of the bearing and thread friction coefficients are proposed based on mechanical behavior of the bolted joint assembly. The formulation of the torque-tension relationship during tightening and loosening is experimentally validated...