Finite element design and analysis method for a new type of structural piezoelectric composite material

Through the finite element design method, the structure of piezoelectric composite materials is optimized, the load transfer capability is improved, and the piezoelectric performance is significantly improved.

CN115730494BActive Publication Date: 2025-08-12DALIAN MARITIME UNIVERSITY
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Patent Information

Application Number
CN202211518230.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-29
Publication Date
2025-08-12
Estimated Expiration
2042-11-29

AI Technical Summary

Technical Problem

The load transfer of existing piezoelectric composite materials is poor, resulting in lower piezoelectric performance.

Method used

Using a finite element design method of a new structural piezoelectric composite material, a 3D model of TPMS shell structure is created by extracting the zero-level set surface based on spatial structural equations, a frame volume fraction is defined using Matlab and the unit node information is controlled. Hexahedral units are generated and smoothed in Rhino, converted into tetrahedral units, and re-meshing is performed in Hypermesh, and periodic boundary conditions are added for numerical simulation.

Benefits of technology

The load transfer capability from polymer to piezoelectric ceramic is improved, and the piezoelectric performance is significantly improved.

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Abstract

This invention discloses a finite element design and analysis method for a novel structural piezoelectric composite material. The method includes the following steps: extracting the zero level set surface based on the spatial structural equation to create the geometric shapes of a 3D TPMS shell structure, including Schwarz P, Gyroid, Neovius, and Diamond structures; using Matlab to define the frame volume fraction of the geometric shapes and control the unit node information in the 3D TPMS shell structure model; generating the 3D TPMS shell structure model as an inp file, importing the inp file into Abaqus to generate hexahedral elements; using Rhino to smooth the surface of the hexahedral elements, exporting the STL file, and performing remeshing in Hypermesh to convert the hexahedral elements into tetrahedral elements; adding periodic boundary conditions to the tetrahedral element mesh and performing numerical simulation to obtain the TPMS shell structure composite material model. The novel TPMS shell structure piezoelectric composite material designed by this method significantly improves piezoelectric performance compared to existing piezoelectric composite materials.
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