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Model and Characteristic Simulation Analysis of a Two-Speed Transmission System

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

One of the main tasks in the research of a helicopter two-speed transmission system was to improve its dynamic characteristics. For the low gear mode ......

A Simplified Integration of Multi-Channel Ultrasonic Guided Wave System for Phased Array Detection and Total Focusing Imaging

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

Ultrasonic guided waves based on sensors array effectively improve the detection sensitivity of defects and realize the intuitive imaging of defects. ......

A New Conjugate Gradient Method and Application to Dynamic Load Identification Problems

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

In this paper, a modified conjugate gradient (MCG) algorithm is proposed for solving the force reconstruction problems in practical engineering. This ......

Analytical Solutions for Side-branch Impedance Producing Spatial Localization of Acoustic Waves in Ducts with Varying Cross Sections

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

Analytical mathematical models and solutions for spatial localization of acoustic waves through an impedance discontinuity produced by an intermediate......

Nonlinear Analysis of a Quasi-Zero Stiffness Air Suspension Based on the Cell-Mapping Method

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

The quasi-zero stiffness system has the characteristics of low dynamic stiffness and high static stiffness, which can bring a better driving experienc......

Warning Effect Evaluation and Control for Vehicle Turn Signal Sound

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (2)

The sound quality of a turn signal sound is directly related to the driving safety and influences comfort during driving. A turn signal sound and inte......

Sound Transmission Prediction of Sandwich Plates With Honeycomb and Foam Cores and an Emphatic Discussion on Radiation Terms

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (1)

When applying the modal summation method to the sound transmission loss (STL) prediction of various plates, the assumption of the blocked sound pressu......

Vibration Analysis of Rotating Wind Turbine Blades Based on Piezoelectric Materials

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (1)

Piezoelectric materials have a piezoelectric effect that converts mechanical energy into electrical energy. In this paper, the blades of the rotating ......

A Novel Degradation Feature Extraction Technique Based on Improved Base-Scale Entropy

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (1)

In order to track the performance degradation trend accurately, a novel degradation feature extraction technique is proposed based on improved base-sc......

Experimental and Numerical Investigation on the Flow-Induced Interior Noise Based on Pellicular Analysis

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2021; 26 (1)

Turbulence caused by the rearview mirror and A-pillar is the main source of interior wind noise. Because of the difference in energy and transfer effi......

Modelling and Dynamic Response Characteristics Study of a PAM Bionic Kangaroo Leg Suspension

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2020; 25 (2)

A PAM (pneumatic artificial muscle) bionic kangaroo leg suspension is proposed on the basis of a kangaroo leg structure evolved from long-term hopping......

Dynamic Characteristics of an Elastic Structure with Thermal Effects

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2020; 25 (2)

The vibration table in a combination environmental testing device suffers from temperature changes, which cause the dynamic characteristics of the vib......

Love-Type Wave in PMN-PT Single Crystal Layered Structures with Periodic Undulations

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2020; 25 (2)

Love-type wave propagation has been studied in a layered structure consisting of a thin layer of PMN-PT single crystal deposited on an elastic half-sp......

A Three-Dimensional Lump Model on Performances of the Stapes Displacement under Different Mechanics Property Conditions of a Middle Ear

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2020; 25 (2)

In this article, a three-dimensional (3D) lumped model of the human auditoria peripherals that consisted of four masses equipped with five major sprin......

Time-Varying Characteristics of the Longitudinal Vibration of a High-Speed Traction Elevator Lifting System

期刊: INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION, 2020; 25 (2)

Hoisting rope in a high-speed traction elevator lifting system exhibits strong time-varying characteristics, which, to a large extent, affect the comf......

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