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Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 417-429 doi: 10.1007/s11465-019-0584-4

Abstract: The transverse stiffness and vibration characteristics of discontinuous beams can significantly differIn this study, the equations for the deflection curve and vibration frequencies of a simply supportedThe normal function of the transverse vibration equation is obtained by separating variables.The deflection and vibration frequencies of the discontinuous beam are studied under different axialResults show that deflection decreases and vibration frequencies increase exponentially with increasing

Keywords: discontinuous beam     bending stiffness     transverse vibration     axial loads     gyroscopic moments    

Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 397-400 doi: 10.1007/s11465-009-0044-7

Abstract: The MFE method treats the moving mass as a moving part of the entire system, so that the transverse inertialThe numerical examples show that the inertial effects of the MM significantly affect the transverse responses

Keywords: simply supported beam     moving mass (MM)     transverse vibration     moving finite element (MFE)    

Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 224-227 doi: 10.1007/s11465-009-0017-x

Abstract: An algorithm is presented for detecting transverse corner cracks at a steel plate surface using waveletAccording to characteristics of transverse corner crack images, the wavelet transform is used for theThe experiment shows that transverse corner cracks of steel plates can be more effectively extracted

Keywords: transverse corner cracks     defect detection     multi-scales wavelet analysis    

Effect of axial load and transverse reinforcements on the seismic performance of reinforced concrete

Mounir Ait BELKACEM, Hakim BECHTOULA, Nouredine BOURAHLA, Adel Ait BELKACEM

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 831-851 doi: 10.1007/s11709-018-0513-3

Abstract: is to assess the seismic performance of reinforced concrete columns under different axial load and transverseEffects of variable axial load ratio and transverse reinforcement ratio on the seismic performance of

Keywords: reinforced concrete columns     axial load     transverse reinforcement     ductility    

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The effect of delamination on the stiffness reduction of composite pipes is studied in this research. The stiffness test of filament wound composite pipes is simulated using cohesive zone method. The modeling is accomplished to study the effect of the geometrical parameters including delamination size and its position with respect to loading direction on stiffness of the composite pipes. At first, finite element results for stiffness test of a perfect pipe without delamination are validated with the experimental results according to ASTM D2412. It is seen that the finite element results agree well with experimental results. Then the finite element model is developed for composite pips with delaminated areas with different primary shapes. Thus, the effect of the size of delaminated region on longitudinal and tangential directions and also its orientation with respect to loading direction on delamination propagation and stiffness reduction of the pipes is assessed.

Keywords: delamination     composite pipes     stiffness test     cohesive zone method    

Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0730-2

Abstract: Ultrasonic vibration-assisted grinding (UVAG) is an advanced hybrid process for the precision machiningIts performance considerably influences the vibration amplitude and resonant frequency.In this work, a novel perforated ultrasonic vibration platform resonator was developed for UVAG.vibration characteristics.The performance of the vibration platform was evaluated by the vibration tests and UVAG experiments of

Keywords: ultrasonic vibration-assisted grinding     perforated ultrasonic vibration platform     vibration characteristics    

Recent development of vibration utilization engineering

WEN Bangchun

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 1-9 doi: 10.1007/s11465-008-0017-2

Abstract: The utilization of vibration and wave, which was developed during the latter half of the 20th centuryThus, due to its necessity in industry and daily life, extensive research has been devoted to vibrationIn this paper, vibration utilization is classified into linear or non-linear vibrations, waves, and electric-magneticSome research results about vibration utilization engineering are described.

Keywords: utilization engineering     non-linear     vibration     vibration utillization     utillization engineering    

Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration

Guilian YI, Yunkang SUI, Jiazheng DU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 229-234 doi: 10.1007/s11465-011-0128-z

Abstract:

To reduce vibration and noise, a damping layer and constraint layer are usually pasted on the innersurface of a gearbox thin shell, and their thicknesses are the main parameters in the vibration andThe normal acceleration of the point on the gearbox surface is the main index that can reflect the vibrationcharacteristics of the whole structure, and the vibration acceleration level is adopted to measure thedegree of the vibration and noise.

Keywords: Abaqus secondary development     Python language     vibration and noise reduction     K-S function     vibration acceleration    

Similitude design for the vibration problems of plates and shells: A review

Yunpeng ZHU, You WANG, Zhong LUO, Qingkai HAN, Deyou WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 253-264 doi: 10.1007/s11465-017-0418-1

Abstract:

Similitude design plays a vital role in the analysis of vibration and shock problems encountered inengineering practice and summarizes the major achievements of the dynamic similitude theory in structural vibrationdiscusses the existing problems and the potential of the dynamic similitude theory for the analysis of vibration

Keywords: review     dynamic     similitude     vibration     model test    

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Frontiers of Structural and Civil Engineering   Pages 981-993 doi: 10.1007/s11709-023-0979-5

Abstract: This study modeled the moving-vehicle-induced forcing excitation on a single-span prismatic bridge as a multiple frequency-multiplication harmonic load on the modal coordinates of a linear elastic simple Euler–Bernoulli beam, and investigated the forced modal oscillation and resonance behavior of this type of dynamic system. The forced modal responses consist of multiple frequency-multiplication steady-state harmonics and one damped mono-frequency complementary harmonic. The analysis revealed that a moving load induces high-harmonic forced resonance amplification when the moving speed is low. To verify the occurrence of high-harmonic forced resonance, numerical tests were conducted on single-span simple beams based on structural modeling using the finite element method (FEM) and a moving sprung-mass oscillator vehicle model. The forced resonance amplification characteristics of the fundamental mode for beam response estimation are presented with consideration to different end restraint conditions. The results reveal that the high-harmonic forced resonance may be significant for the investigated beams subjected to vehicle loads moving at specific low speeds. For the investigated single-span simple beams, the moving vehicle carriage heaving oscillation modulates the beam modal frequency, but does not induce notable variation of the modal oscillation harmonic structure for the cases that vehicle of small mass moves in low speed.

Keywords: forced vibration     linear Euler beam     moving load     harmonic structure     frequency modulation     end restraints    

Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes

Masoud MASOUMI,Mehdi MASOUMI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 142-149 doi: 10.1007/s11465-014-0292-z

Abstract: it is used to model the carbon nanotubes with the aim of the investigating into their longitudinal vibration

Keywords: continuum theory     differential quadrature method     nanorod     longitudinal vibration    

Design of ultrasonic elliptical vibration cutting system for tungsten heavy alloy

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0715-1

Abstract: In this study, a high-performance ultrasonic elliptical vibration cutting (UEVC) system is developedA new design method of stepped bending vibration horn based on Timoshenko’s theory is first proposed,vibration locus, which is verified by finite element method.The vibration unit can display different three-degree-of-freedom (3-DOF) UEVC characteristics by adjustingA dual-channel ultrasonic power supply is developed to excite the ultrasonic vibration unit, which makes

Keywords: tungsten heavy alloy     ultrasonic elliptical vibration cutting     Timoshenko’s theory     resonant mode of    

Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 429-432 doi: 10.1007/s11465-007-0073-z

Abstract: To calculate the fundamental frequency of vibration of special-shaped and elastic clamped plates, the

Keywords: direction     theory     vibration     odd     complicated boundary    

Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions

Frontiers of Structural and Civil Engineering   Pages 884-900 doi: 10.1007/s11709-022-0912-3

Abstract: weakening behavior of waterproof performance was investigated in the joints of shield tunnels under transverseFirst, the relationship between the joint opening and transverse deformation under three typical adjacentWhen the waterproof performance of these joints decreased to 50% and 30%, the transverse deformations

Keywords: shield tunnel     waterproof performance     horizontal transverse deformation     joint opening     weakening behavior    

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 409-419 doi: 10.1007/s11465-013-0275-5

Abstract: This paper presents a vibration analysis of harmonic drive systems using the shell theory.Equations of vibration for the flexspline and the circular spline of the system are derived and usedto find the natural frequencies for both parts and, moreover, vibration response of the system underAlso, obtained vibration equations are utilized to study the effects of different involved parameters

Keywords: harmonic drive system     strain wave gearing mechanism     vibration analysis     natural frequencies    

Title Author Date Type Operation

Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Journal Article

Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Journal Article

Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Journal Article

Effect of axial load and transverse reinforcements on the seismic performance of reinforced concrete

Mounir Ait BELKACEM, Hakim BECHTOULA, Nouredine BOURAHLA, Adel Ait BELKACEM

Journal Article

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform

Journal Article

Recent development of vibration utilization engineering

WEN Bangchun

Journal Article

Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration

Guilian YI, Yunkang SUI, Jiazheng DU

Journal Article

Similitude design for the vibration problems of plates and shells: A review

Yunpeng ZHU, You WANG, Zhong LUO, Qingkai HAN, Deyou WANG

Journal Article

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Journal Article

Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes

Masoud MASOUMI,Mehdi MASOUMI

Journal Article

Design of ultrasonic elliptical vibration cutting system for tungsten heavy alloy

Journal Article

Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Journal Article

Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions

Journal Article

An investigation into the vibration of harmonic drive systems

M. Masoumi, H. Alimohammadi

Journal Article