Electricity, magnetism excitated intellective composite material body with ultra large deformation

Abstract

Especially, the invention is related to intelligent composite material body capable of generating super large deformation by using electrical excitation and magnetic excitation. The intelligent composite material body includes magnetic body and basal body. Size of the magnetic body in length direction is different from the size in width. Being set up inside the basal body, cavities wrap basal bodies. At certain extent, replacing current magnetostrictive material, the composite material body can generate super large deformation. Possessing both characteristics of electrostriction and magnetostriction, the disclosed composite material makes appearance of stretching material body neat and integral structure compact.

Description

technical field [0001] The invention relates to a deformable composite material body, in particular to an intelligent composite material body capable of producing super large deformation by electric and magnetic excitation. Background technique [0002] In recent years, the field of electric and magnetostrictive materials has developed rapidly, and new intelligent materials such as giant magnetostrictive materials, piezoelectric ceramics and magnetostrictive shape memory alloys have been produced, which can be used in the development of precision drives, sensors and linear motors. These materials have the advantages of high energy density, high output power, and precise stretching and deformation. However, such materials generally have small strains, weak induction signals generated when sensing external excitations, and complex driving and excitation processes. The driving voltage or High current and other defects, and in order to increase the stretching effect, it often ne...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the field of electric and magnetostrictive materials has developed rapidly, and new intelligent materials such as giant magnetostrictive materials, piezoelectric ceramics and magnetostrictive shape memory alloys have been produced, which can be used in the development of precision drives, sensors and linear motors. These materials have the advantages of high energy density, high output power, and precise stretching and deformation. However, such materials generally have small strains, weak induction signals generated when sensing external excitations, and complex driving and excitation processes. The driving voltage or High current and other defects, and in order to increase the expansion and contraction effect, it is often necessary to preset stress, bias magnetic field and electric field and other links

Because such materials are brittle and are not suitable for processing and modification, special crystal growth, manufacturing processes and equipment are often required for manufacture. In addition, they do not have the performance of being excited by both current and magnetic field or by current and magnetic field at the same time. Therefore, Practical applications of such materials are limited

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