Lightweight Material

Current location:homepage  Research  Lightweight Material

Lightweight materials, for example, porous metal material and sandwich panel, are light in weight, high in stiffness and good in acoustics characteristics. Thus, they are generally applied to automobiles, high-speed locomotives, ships/submarines and the shell structures of aircraft. Scientists are getting more and more interested in vibration-acoustics coupling problems of the lightweight materials structure, including the sound absorption of lightweight materials, incoming and outgoing problems of structure of the sound field, for example, the incoming noise from extra-vehicular of the cars, high-speed locomotives and aircraft and the outcoming noise from shell of the submarines.

Led by professor T.J.Lu, our director of the center, we have cast investigation on vibration attenuation and noise reduction of the lightweight material structures based on the requirement of our country’s major project.

latest research topics:

1. The vibration and acoustic properties of lightweight material: analysis, experiment and numerical simulation

2. Vibration attenuation and noise reduction for aerospace lightweight material: theory, experiment and design

3. Sound absorption theory and optimization design for porous foam material

4. Lightweight design, vibration attenuation and noise reduction

5. Vibration, acoustics and thermal insulation integration for lightweight thermal protection composite materials

6. Solid mechanics / Fluid mechanics / Fluid-structure interaction

7. Acoustics theory / Aeroacoustics theory

latest research achievements:

In the latest three years, our team have performed research mainly on the vibration attenuation and noise reduction of lightweight materials, built a completed theory on acoustics-vibration coupling and finite element analysis method of complicated sandwich panels and laminated composite plate, build a theoretical model of composite structure vibration and acoustics analysis influenced by external complex flow field, built a theoretical model of porous material sound reduction and its optimization, revealed the mechanism of acoustics-vibration coupling for composite structures and the noise reduction mechanism of porous materials, improved the fluid-solid coupling theory, noise reduction theory for porous material, provided a theoretical method and experimental statistics for the analysis of lightweight structural acoustic propagation and the research on vibration attenuation and noise reduction. Besides, we have also developed the composite sandwich structure for high-performance ceramic/epoxy and the techniques of microscale structures noise reduction.

Next page:Design &Manufacture

Address:29 Yudao Street, Qinhuai District, Nanjing, Jiangsu province Postcode: 210016

Copyright MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures