Modeling of normal contact stiffness for surface with machining textures and analysis of its influencing factors

Zhang, Chaodong; Yu, Wennian; Luo, Yin; Zeng, Qiang; Chen, Zixu; Shao, Yimin

doi:10.1016/j.ijsolstr.2022.112042

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…A larger mode displacement implies a higher contact pressure on the contact surface in cases where contact occurs. Contact stiffness is influenced by factors such as material properties, surface roughness, and contact pressure in the study of mechanical contact stiffness [19][20][21][22]. As increased contact pressure leads to an increase in contact stiffness, the regions with larger mode displacements are associated with higher contact stiffness.…”

Section: Modal Order Experimental Mode Simulated Modementioning

confidence: 99%

Research on the Impact of Non-Uniform and Frequency-Dependent Normal Contact Stiffness on the Vibrational Response of Plate Structures

Yan,

Fan,

Wang

et al. 2024

Applied Sciences

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Mechanical interfaces are prevalent in industries like aerospace and maritime, where the normal contact stiffness on these surfaces is a crucial component of the overall stiffness of mechanical structures. From the perspective of structural mechanics, normal contact stiffness significantly affects the dynamic response of mechanical structures and must be considered in mechanical design and simulation analysis. Essentially, the mechanical interface represents a typical type of nonlinear contact, characterized by both its non-uniform distribution and its frequency-dependent properties under external excitations. A plate structure was designed to study the distribution and frequency-dependent characteristics of normal contact stiffness on the mechanical interface. Experiments validated that the normal contact stiffness not only significantly increases the fundamental frequency of the plate but also alters its mode shapes. To replicate the experimental results in simulations, the BUSH elements were used to model the normal contact stiffness within the plate structure, arranging it non-uniformly and setting it to vary with frequency according to the plate’s mode shapes and frequency response. This method accurately replicated the plate’s mode shapes and response curves within the 0–1000 Hz range in simulations.

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Section: Modal Order Experimental Mode Simulated Modementioning

confidence: 99%

Research on the Impact of Non-Uniform and Frequency-Dependent Normal Contact Stiffness on the Vibrational Response of Plate Structures

Yan,

Fan,

Wang

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the inclination Dy of the gauge block in the YOZ plane is measured (see Figure 8). Then, the inclination angle a yoz of the rotation axis in the YOZ plane can be obtained by the equation a yoz = tan 21 (Dy/H a ). The average of the eight measurements of the inclination angle a yoz is 0.1337°.…”

Section: Calibration and Compensationmentioning

confidence: 99%

“…The interface contact stiffness is closely related to the topographic characteristics of the rough surface. 21 In the construction of acoustic models, interface separation is a key parameter in the construction of contact stiffness. The interface separation varies nonlinearly with the load, and its variation law is related to the asperity height distribution and material properties of the rough surfaces.…”

Section: Introductionmentioning

confidence: 99%

Connection force measurement of precision small interference components using ultrasound

Wang

Liu

Lü

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Precision small interference components are mainly assembled using the press-fit method. Interface wear is inevitable in the press-fit process, which will reduce the connection strength. Pull-out experiments are the main means of measuring the connection force, but they are not available in the production process for its destructive characteristics. In this study, a nondestructive testing method for connection force based on ultrasound is proposed. An acoustic model was constructed based on the virtual layer model and statistical microcontact theory, which can be used to obtain the R- Kn- P mapping relationship. An ultrasonic measurement device was built manufactured and calibrated to achieve accurate alignment of the ultrasonic transducer with the interference component and accurate measurement of contact stress. The coaxiality error between the fixture and the turntable is less within ±5.9 μm. The parallelism errors between the turntable and Z-axis stage in the xoz- and yoz-plane are 0.0894° and 0.0662°, respectively. The measurement error due to the transducer positioning error is less than 1.5%. The equivalent static friction coefficient was proposed to compensate R- Kn- P calibration error and measurement error. The integral expression of the connection force was given. Finally, the connection force of the interference components was measured and verified by pull-out experiments. The measurement error is within ±10%.

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“…Yin et al 19 proposed an interface feature model and a trio‐dynamics coupling model for the gear system to investigate the influence of the surface microtopography on the dynamic characteristics of the gear system under different microtopographies and input torque conditions. Zhang et al 20 presented a contact model for rough surfaces consisting of regular surface machining textures and stochastic microasperities and investigated the effects of the different texture types and surface roughness on the contact stiffness of the rough surface. In addition, the effects of tooth surface topography on gear systems are also investigated by some experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Experimental‐based study of gear vibration characteristics incorporating the fractal topography of tooth surface

Qiu

Yuan

et al. 2023

Int Journal of Mech Sys Dyn

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Microscopic roughness is inevitable on the gear meshing surface, which is also a key parameter affecting the dynamic response. The surface roughness exhibits self‐affine characteristics across multiscales. To explore the influence of surface fractal topography on the vibration amplitude of the gear system under different rotational speeds and loads, an experimental setup of spur gear transmission is devised. The fractal dimension and fractal roughness of the meshing surface are calculated by the power spectral density method. The relationships between gear response and fractal parameters are revealed experimentally. Results indicate that a rougher tooth surface, that is, a smaller fractal dimension or larger fractal roughness, corresponds to an intense vibration amplitude. The sensitivity of dynamic response to the tooth surface topography varies at different rotational speeds and loads. Under low speed and light load conditions, the fractal dimension and fractal roughness have a more obvious influence on the dynamic response of the gear transmission system. With the increase of speed and load, the macroworking conditions gradually become the main factor attributed to vibration amplitude.

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Modeling of normal contact stiffness for surface with machining textures and analysis of its influencing factors

Cited by 12 publications

References 27 publications

Research on the Impact of Non-Uniform and Frequency-Dependent Normal Contact Stiffness on the Vibrational Response of Plate Structures

Research on the Impact of Non-Uniform and Frequency-Dependent Normal Contact Stiffness on the Vibrational Response of Plate Structures

Connection force measurement of precision small interference components using ultrasound

Experimental‐based study of gear vibration characteristics incorporating the fractal topography of tooth surface

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