Results 11 to 20 of about 151 (141)
A Novel Method for Identifying Tool–Holder Interface Dynamics Based on Receptance Coupling
MachinesThe structural dynamics of a machine tool play a significant role in chatter occurrence, which significantly deteriorates the metal-cutting performance.
Dingtang Zhao +4 more
doaj +2 more sources
Absolute Measurement of Material Nonlinear Parameters Using Noncontact Air-Coupled Reception [PDF]
Materials, 2021 Nonlinear ultrasound is often employed to assess microdamage or nonlinear elastic properties of a material, and the nonlinear parameter is commonly used to quantify damage sate and material properties. Among the various factors that influence the measurement of nonlinear parameters, maintaining a constant contact pressure between the receiver and ...
Hyunjo Jeong +3 more
openaire +2 more sources
Applied Sciences, 2022 Ballast mats are considered as an effective solution for reducing vehicle-induced vibrations. However, the research on the vibration characteristics of each part of the ballasted track with a ballast mat is limited.
Bowen Hou +4 more
doaj +1 more source
Nonlinear Dynamic Responses of a Rotor‐Bearing System with Eccentric Squeeze Film Dampers
International Journal of Aerospace Engineering, Volume 2023, Issue 1, 2023., 2023 A squeeze film damper (SFD) is a commonly used component in aeroengine support structures. However, eccentric SFDs are often employed in practical applications. Existing research in this field has mainly focused on simple rotor models and frequency‐domain solution techniques.
Jiaqi Han +5 more
wiley +1 more source
Suppressing Milling Chatter of Thin‐Walled Parts by Eddy Current Dampers
Shock and Vibration, Volume 2023, Issue 1, 2023., 2023 Machining vibrations often occur when working with thin‐walled workpieces. One effective method to mitigate these vibrations is by using a damper, which can enhance machining accuracy, surface finish, and tool life. However, traditional contact dampers have a drawback in that they require direct contact with the workpiece, leading to friction, wear ...
Junming Hou +3 more
wiley +1 more source
Advances in Civil Engineering, Volume 2022, Issue 1, 2022., 2022 The use of slab tracks in lieu of ballast tracks has introduced new dimensions in track dynamics in high‐speed railways. To improve the performance of slab tracks under dynamic frequency responses caused by loads on the Shinkansen railway, the present study aimed to investigate the effect of mechanical properties of track components, including the ...
Majid Gholizadeh +3 more
wiley +1 more source
Machines, 2022 In the fabrication process of thin-walled micro-parts, both micro-cutting tools and thin-walled micro-parts have the characteristics of small size and low stiffness. Therefore, the regenerative chatter during the machining process cannot be ignored.
Peng Wang +4 more
doaj +1 more source
Interpolation‐Based Modeling Methodology for Efficient Aeroelastic Control of a Folding Wing
International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021 The aeroelastic model of a folding wing varies with different configurations, so it actually represents a parameter‐varying system. Firstly, a new approach based on interpolation of local models is proposed to generate the linear parameter‐varying model of a folding wing.
Chengyu Yue, Yonghui Zhao, Erdal Kayacan
wiley +1 more source
Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021 Due to material multiplicity, rigid‐flexible hybrid and environmental variations, and so forth, the properties of the tracks will be inevitably changed due to the cyclic loads temporally and spatially. In this paper, a theoretical study is conducted to clarify the influence of the longitudinal inhomogeneity of track stiffness on system responses and ...
Wen Bai, Lei Xu, Timothy O. Olawumi
wiley +1 more source
A receptance-based method for frequency assignment via coupling of subsystems [PDF]
Archive of Applied Mechanics, 2019 Abstract This paper presents a theoretical study of the frequency assignment problem of a coupled system via structural modification of one of its subsystems. It deals with the issue in which the available modifications are not simple; for example, they are not point masses, grounded springs, or spring-mass oscillators.
Sung-Han Tsai +2 more
openaire +1 more source