An improved numerical method for calculating mechanical properties of bi-modulus sandwich composite structures

Qiu, Yu; Shen, Wei; Yan, Rong; Li, Xiaobin; Ye, Zhenzhou; Li, Mengzhen; Liu, Kang; Qin, Kai

doi:10.1016/j.oceaneng.2022.110998

Cited by 8 publications

(1 citation statement)

References 25 publications

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“…At present, commercial finite element software ANSYS,-NASTRAN,ABAQUS, etc. 19 can not directly deal with the problem of different modulus in tension and compression. 20 However, the user material subroutine provided by commercial finite element software provides the possibility to deal with different modulus problems in tension and compression.…”

Section: Bi-modulus Simulation Numerical Methodsmentioning

confidence: 99%

Analysis of load-bearing characteristics of bi-modulus composite stiffened plates: Numerical simulation method and large-scale experimental verification

Ye,

Li,

et al. 2024

Journal of Composite Materials

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A large number of experiments show that composite materials usually show different modulus properties in tension and compression (bi-modulus). However, for actual composite engineering structures, especially complex models, the numerical simulation calculation is usually based on a single modulus. In order to consider the different modulus characteristics of composite materials in tension and compression, researchers put forward simplified constitutive models of dual-modulus materials. However, these constitutive models have not been verified by a large number of experiments, especially by complex models. In this paper, the GWFMM model is simplified and used to analyze complex structures with different modulus in tension and compression. The experimental results of stiffened plate show that the improved GWFMM model can be used to analyze different modulus of tension and compression of complex stiffened structures. In addition, the influence of elastic modulus ratio in tension and compression under different experimental load conditions is further explored, and the influence law of bending and torsion on structures with bi-modulus is discussed. The relevant conclusions provide reference for the design and optimization of full-scale composite structures in marine engineering.

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Section: Bi-modulus Simulation Numerical Methodsmentioning

confidence: 99%