• The state-of-art of lightweight materials for automobiles is reviewed. • Representative materials are introduced with potential automotive applications, particularly on electric vehicles. • Given the recent advances in manufacturing, modeling, and characterization, both pros and cons of materials are summarized. • Solutions for future challenges are highlighted by developing advanced materials and/or improving the manufacturing. The growing challenges on fuel economy improvement and greenhouse gas emission control have become the driving force for automakers to produce lightweight automobiles. Also, the weight reduction may contribute to superior recyclability and/or vehicle performance ( e.g ., improved driving economy, braking behaviors, and crashworthiness). One effective strategy is to develop and implement lightweight yet high-performance materials as alternative solutions for conventional automotive materials such as cast iron and steel. Herein, a systematic review of available lightweight materials to produce next-generation automobiles is provided, including light alloys, high-strength steels, composites, and advanced materials in the ongoing research. By investigating the entire life cycle of automotive materials, physical/mechanical properties, characterization, manufacturing techniques, and potential applications of specific lightweight materials are discussed. Both the advantages and drawbacks of the reviewed materials are summarized, yielding the appropriate application scenarios for different lightweight materials. Given the future challenges, on expectations, the development of versatile advanced materials or improvement of the manufacturing/treatment techniques can be rather promising to resolve the possible bottlenecks and, in turn, enables more capable, safer, durable, and environmental-friendly vehicles. 

Advanced Lightweight Materials for Automobiles: A review

This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 ...

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review:

Improvement of the band-gap characteristics of active composite laminate metamaterial plates

An analytic dynamic stiffness method (DSM) is extended to analyze the free and forced vibration of combined conical-cylindrical shells with general boundary conditions in this paper. Flugge shell theory is utilized to formulate the motion equations of each shell component. Based on the exact general solutions of the motion equations, the dynamic stiffness matrices for each shell segment are established separately and the global dynamic stiffness matrix for the whole structure is established by assembling the dynamic stiffness matrices for each shell segment similarly as finite element method (FEM) did. Natural frequencies and forced responses of the combined shells are obtained based on the global dynamic stiffness matrix. Through comparing vibration results of DSM with ones from open literature and FEM, rapid convergence, good accuracy, and high efficiency of the DSM are demonstrated. In the numerical examples, the influences of boundary conditions, axial and circumferential mode numbers, and semi-vertex angles on the free vibration are studied. The effects of direction and location of external force and structural damping on the forced vibration are also discussed.

Vibration analysis of combined conical-cylindrical shells based on the dynamic stiffness method

This paper presents the natural vibration and transient response of functionally graded piezoelectric materials (FGPMs) curved beam with a numerical method. The unknown fields, geometry and material properties are described by the isogeometric method. The effects of axis extensibility, shear deformation, rotary inertia, general boundary condition and variable curvature are considered. The material with electrical properties are assumed varying continuously. The convergence and accuracy are validated in several numerical examples. Moreover, the effects of boundary conditions, material parameters and geometric proprieties are examined systematically. Finally, the transient response of curved beam subjected forces are fully reported.

The isogeometric free vibration and transient response of functionally graded piezoelectric curved beam with elastic restraints

Band gap property analysis of periodic plate structures under general boundary conditions using spectral-dynamic stiffness method

Sound absorption behaviors of metamaterials with periodic multi-resonator and voids in water

Experimental study on shear performances of ultra-high performance concrete deep beams

The invention discloses a self-noise test system and level test method for a ship sonar platform and belongs to the field of underwater noise control engineering According to the invention, three signal source generators are controlled through a computer to generate excitation signals, and so the three signal source generators generate simulated hydrodynamic noise, simulated mechanical noise andsimulated propeller noise Then data is collected and analyzed through a signal acquisition and recording end A sonar platform self-noise test under a single noise resource effect can be carried out,a platform self-noise test under the effects of multiple noise resources at the same time can be implemented, test data in a whole wide frequency band can be obtained at a time, tests in different frequency bands are avoided, the work efficiency is improved, and the self-noise characteristics of a sonar chamber under various working conditions are more realistically simulated, and the establishment of a self-noise test system for the ship sonar platform is achieved

Self-noise test system and level test method for ship sonar platform

The transient flow behind a bluff body is a common phenomenon in engineering applications. However, most of the research attention is fully developed flow, rather than the initial stages of flow fo...

Jialiang Zhou

Papers

Band gap property analysis of periodic plate structures under general boundary conditions using spectral-dynamic stiffness method

Sound absorption behaviors of metamaterials with periodic multi-resonator and voids in water

Experimental study on shear performances of ultra-high performance concrete deep beams

Self-noise test system and level test method for ship sonar platform

Effect of multiple control cylinders on the transient flow behind a translationally and rotationally started cylinder