Modeling and analyzing method of interlaced and laminated mixed laminated composite material laminated board

A technology of composite material layer and analysis method, which is applied in the field of automatic generation of interwoven and laminated hybrid laminated composite material laminates, to achieve the effect of reducing scientific research costs and improving the ability to resist delamination and damage

Active Publication Date: 2020-02-21
BEIHANG UNIV
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Problems solved by technology

At the same time, the properties of the performance test specimens of the interwoven ply will be different at different positions of the ply slab, which also poses new challenges to the finite element modeling and analysis technology of the composite ply structure

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  • Modeling and analyzing method of interlaced and laminated mixed laminated composite material laminated board
  • Modeling and analyzing method of interlaced and laminated mixed laminated composite material laminated board
  • Modeling and analyzing method of interlaced and laminated mixed laminated composite material laminated board

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[0040] Attached below picture with The examples further describe the present invention, and it should be understood that the following examples are intended to facilitate the understanding of the present invention, but do not limit it in any way.

[0041]The present invention adopts the parametric automatic modeling tool to automatically generate the finite element model of the LS-Dyna data format of the composite material laminate, wherein the parametric automatic modeling tool adopted comprises three major functional blocks: model grid generation toolkit, model Build Toolkit and Performance Prediction Toolkit. The model parameters in the present invention can be exported into files in other formats, and at the same time interface with other grid division, finite calculation and post-processing software, such as HYPERMESH, ABAQUS and ANSYS. The user first inputs parameters such as grid size, model size, ply thickness, ply sequence, fiber bandwidth, ply position, etc. into ...

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Abstract

The invention discloses a modeling and analyzing method of an interlaced and laminated mixed laminated composite material laminated board. The method comprises the following steps of designing an interlaced and laminated mixed laminated structure; generating a basic lamination layer model and a basic interweaving layer model; establishing a 3D model of the interlaced and laminated mixed laminatedcomposite material laminated board; and setting the material attributes, boundary conditions and loading modes for the established 3D model of the interlaced and laminated mixed laminated composite material laminated board to realize the finite element analysis of the mechanical properties of the interlaced and laminated mixed laminated composite material laminated board. According to the invention, the composite material laminated board model of various interlaced and laminated laminations is automatically generated according to the lamination parameters; the mixed design of the interlaced laminated structure of the weak link of the interlayer performance of the composite material laminated board under different load conditions can be guided, and the strengthening effects of the mixed structure on the composite material laminated board can be predicted, including the interlayer performance, the bending resistance, the impact resistance and the like.

Description

technical field [0001] The invention belongs to the field of composite material structure modeling, and particularly relates to a 3D finite element model and analysis method for automatically generating interwoven and laminated composite laminates, which are used to predict the composite material after the interwoven and laminated layers are mixed. Reinforcement of material laminates. Background technique [0002] The excellent mechanical properties of fiber-reinforced composites are mainly concentrated in its axial direction, while the weak interfacial bonding force between fibers and resin and the inherent brittleness of resin make the interlayer performance of composite laminates poor. Under loads such as compression, bending, and impact, cracks are prone to occur between layers of composite laminates and the cracks will propagate along the layers, resulting in a decrease in in-plane strength and stiffness, and even damage to the overall structure of the laminate. Compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23B32B38/18G06F119/14G06F113/26
CPCB32B38/1808
Inventor 李敏魏汉青顾轶卓王绍凯
Owner BEIHANG UNIV
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