Results 41 to 50 of about 33,921 (168)
Metalurgija, 2013 In this study,damping ratios of 3 samples made of aluminum foam material, which have different-density pores, were calculated, the effects pore density on damping were examined.
L. Dahil, A. Karabulut, S. Baspinar
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Applied SciencesUnder the premise of a certain damping layer volume, topological optimization design of its attach shape can enable a pipeline system to achieve optimal damping performance.
Dongxu Du, Hongwei Ma, Wei Sun
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Sensitivity analysis of sticking area for damping material
Zhongguo Jianchuan Yanjiu, 2018 [Objectives] In order to improve the data sensitivity of current acoustic test methods on the construction quality of damping material, [Methods] the vibration level difference of single frequency points based on the Frequency Response Function(FRF)is ...
XU Jianlong +3 more
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Engineering Aspects of Material Damping and Structural Damping Measurements [PDF]
The Journal of the Acoustical Society of America, 1969 Without a completely inclusive governing theory of damping, engineers are forced to substitute empirical models for the description of the true physical properties. A necessary criteria is that the damping model be independent of the process of deformation. It is usual to include damping in the equations of motion by selecting modal equations that give
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Journal of Low Frequency Noise, Vibration and Active Control, 2018 This paper is concerned with an experimental study of improved slotted stand-off layer rail dampers in reducing railway vibration and noise. To achieve the goal, based on the idea of molecular design, polyurethane/vinyl ester resin interpenetrating ...
Caiyou Zhao +4 more
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Vibration Reduction Analysis of Bearing Seat Damping Structure of Helicopter Main Reducer Casing
Jixie chuandong, 2021 Aiming at the vibration and noise problem of a helicopter main reduction casing，the dynamics simulation analysis of the main reduction transmission system model is performed to solve the dynamic meshing impact force generated by the spiral bevel gear ...
Hao Gao +3 more
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BuildingsViscoelastic dampers (VEDs) in seismic structures comprehensively enhance the dynamic performance of the structure by dissipating energy, providing additional stiffness and damping.
Teng Ge +4 more
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PhotonicsA new method for measurement of the material damping coefficient based on the laser self-mixing interference (SMI) technique is proposed. The dominant frequency that varies over time is extracted by using the synchro-squeezed wavelet transform to obtain ...
Xiulin Wang +4 more
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Science and Engineering of Composite MaterialsIn order to determine the influence of the ondulations in fabrics on the damping properties of fiber-reinforced plastics, the structural dynamic properties of fabric- and unidirectionally reinforced plastics are investigated.
Romano Marco, Ehrlich Ingo
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RESEARCH ON CONTACT DAMPING CHARACTERISTICS OF JOINT SURFACE OF MICRO TEXTURED SURFACE
Jixie qiangduThe effect of surface morphology parameters on the contact damping of miero textured surface was studied. The damping source of the joint surface is analyzed, and the mathematical model of the damping of a single micro convex body on the joint surface is
ZHU ChunXia +3 more
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