In situ, real-time measurements of contact pressure internal to jointed interfaces during dynamic excitation of an assembled structure

Dreher, T.; Brake, Matthew Robert; Seeger, Benjamin; Krack, Malte

doi:10.1016/j.ymssp.2021.107859

Cited by 14 publications

(5 citation statements)

References 32 publications

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“…Electronic pressure films were used to measure the contact pressure within an interface instantaneously [96,97], which can record all contact and not just the final contact. Dreher et al [98] studied the pressure distribution and pressure change of the bolted Brake-Reuß Beam during dynamic loads, using an electronic pressure sensor placed in the interface plane, as shown in Fig. 36(a).…”

Section: Frictionmentioning

confidence: 99%

Experimental studies on the energy dissipation of bolted structures with frictional interfaces: A review

Wang,

Ma,

Hong

et al. 2024

Friction

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Bolted joints play a more and more important role in the structure with lighter weight and heavier load. This paper aims to provide an overview of different experimental approaches for the dynamic behavior of structures in the presence of bolted joints, especially the energy dissipation or damping at frictional interfaces. The comprehension of energy dissipation mechanisms due to friction is provided first, while the key parameters and the measurement techniques, such as the excitation force, the preload of the bolt, or the pressure at the interfaces, are briefly introduced. Secondly, the round-robin systems aim to measure the hysteresis parameters of the frictional joints under tangential loads are reviewed, summarizing the basic theory and the strategies to apply the excitation force or acquire the response in different testing systems. Followed by parameter identification strategies for bolted structures, the test rigs with one or more simplified bolted joints are summarized to give an insight into the understanding of typical characteristics of bolted structures, which are affected by the presence of friction. More complex test rigs hosting real-like or actual engineering structures with bolted lap or flange joints are also introduced to show the identification process of the dynamic characteristics of bolted connections employed in specific applications. Based on the review paper, researchers can get the basic knowledge about the experimental systems of the bolted structures, especially several classical round robin systems, such as the Gaul resonator and widely used Brake-Reuß beam system. Readers can take advantage of this background for more creative and effective future studies, make more progress on the study of assembled structures and understand the influence of bolting frictional connections on the dynamic response better.

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Section: Frictionmentioning

confidence: 99%

Experimental studies on the energy dissipation of bolted structures with frictional interfaces: A review

Wang,

Ma,

Hong

et al. 2024

Friction

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show abstract

“…Firrone and Zucca compared features of the responses obtained by employing different formulations in [6]. Experimental evidence [7,8] has shown that a correct simulation of joint behavior must take into account time varying contact pressure across the interface. Finely discretized interfacial meshes whose elements can reproduce this effect, equipped with an elastic or rigid Coulomb law, make the depiction of global microslip behavior possible [9].…”

Section: Introductionmentioning

confidence: 99%

A frequency-domain reduced order model for joints by hyper-reduction and model-driven sampling

Morsy

Kast²,

Tiso³

2023

Mechanical Systems and Signal Processing

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“…Wang et al 7 proposed an underwater bolt looseness detection method based on the “smart lobster” detection concept and experimentally verifies it. According to test methods, bolt looseness detection methods can be divided into direct (torque wrench, 8 strain gauge 9 ) and indirect tests. Direct detection methods are simple to execute.…”

Section: Introductionmentioning

confidence: 99%

An assembly tightness recognition method for bolted connection states with singular-value entropy and GA least-squares support vector machine

Zhang

Sun

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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The bolted connections are widely used in high-end equipment such as aerospace and energy fields. However, when the equipment is assembled, the assembly tightness of bolted connection structure is easily affected by friction and manual experience, resulting in inconsistent preload. It will affect the dynamic performance of equipment, resulting in abnormal vibration or failure of equipment. Currently, the existing assembly tightness testing methods mainly focus on whether the bolts are loose, ignoring the impact of assembly tightness on the vibration of the whole machine. This paper proposes an assembly tightness recognition method for bolted connection states based on modified ensemble empirical mode decomposition (MEEMD) and genetic algorithm least squares support vector machine (GALSSVM). Firstly, an ultrasonic pre-tightening force test system is used for multi-bolt pre-tightening force calibration and precise control, and subsequently, accurate vibration signal samples are collected. The feature extraction of multi-bolt connection states is carried out based on MEEMD. Secondly, a quantitative evaluation index of assembly tightness, singular-value entropy, is proposed. Finally, experimental verification is performed. Multiple sets of different preloads case experiments are designed to verify the identification accuracy of the proposed algorithm. The results show that with the bolted connection structure from loose to tight, the singular-value entropy of the quantitative index decreases monotonically. It provides some theoretical references for improving the reliability of high-end equipment and the evaluation of assembly performance.

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In situ, real-time measurements of contact pressure internal to jointed interfaces during dynamic excitation of an assembled structure

Cited by 14 publications

References 32 publications

Experimental studies on the energy dissipation of bolted structures with frictional interfaces: A review

Experimental studies on the energy dissipation of bolted structures with frictional interfaces: A review

A frequency-domain reduced order model for joints by hyper-reduction and model-driven sampling

An assembly tightness recognition method for bolted connection states with singular-value entropy and GA least-squares support vector machine

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