Progressive failure method and structural optimization analysis of marine sandwich L-shaped composite joints

Qiu, Yu; Yan, Renjun; Huang, Jiwei; Li, Xiaobin; Shen, Wei; Xu, Lin

doi:10.1016/j.oceaneng.2023.116045

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…Fiber reinforced composite structures have been widely used in aviation, aerospace, bridges and other fields because of their light weight, high specific strength and good corrosion resistance. 1,2 With the further development of lightweight technology, composite materials have been significantly improved in the application of superstructure and even main structure of large ships. In the early days, limited by construction technology and hull stiffness, composite materials were mainly used to build small-scale ships and weak components such as masts, radomes and outfitting structures in ships.…”

Section: Introductionmentioning

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: Introductionmentioning

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

Self Cite

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“…The composite beams, plates and shells are the basic units of ship and marine composite structures. For example, composite laminates and sandwich panels have many advantages, such as light weight, corrosion resistance, high strength, high damping, high designability, sound absorption, sound transmission and fatigue resistance [1][2][3][4][5][6][7][8][9][10]. Therefore, the static bending, vibration and buckling characteristics of composite beams, plates, and shells have been widely studied, and these characteristics often require the prediction of the static and dynamic characteristics of composite beams, plates, and shells by experimental, numerical, and theoretical methods.…”

Section: Introductionmentioning

confidence: 99%

A unified framework for equivalent single layer theories of composite beams, plates, and shells: a review

2024

Eng. Solut. Mech. Mar. Struct. Infrastruct.

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This article presents a comprehensive review of the unified framework for the equivalent single layer theories of composite beams, plates and shells. First, the approach to unified displacement fields has two main categories: one is to start from the assumption of linear displacement field variables. And the another is to start from the assumption of transverse strains and transverse displacement variable. In terms of unified shape functions, the shape function is defined as the function that exist in the transverse strain rather than the in-plane displacement variables. Moreover, the basic requirements for the choose of shape functions are also given and analysed in this paper. The unified shape functions are introduced in terms of the several functions and the unified polynomial model. In addition, a construction method for new shear strain shape functions is described in this review. Finally, the current research progress and future prospects are also given.

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“…In addition to the superior specific stiffness and specific strength [7][8][9], CFRP has also shown good corrosion resistance [10], crush and impact resistance [11,12], and noise reduction property [13], and thus their applications become increasingly attractive in many fields, including automotive industry, aerospace, marine, etc. [14][15][16]. The improvement of CFRP material and structural properties in various industries is still one of the popular research.…”

Section: Introductionmentioning

confidence: 99%

“…The improvement of CFRP material and structural properties in various industries is still one of the popular research. Based on the Shokrieh-Hashin criterion and the coherent zone modeling method, Qiu et al [15] improved and updated the simulation method for the progressive failure of complex composite structures and formed the optimal scheme of full-scale deck side joint. Ren et al [16] carried out heterogeneous structure design of CFRP materials for the aerospace environment, which effectively improved the strength of the materials.…”

Section: Introductionmentioning

confidence: 99%

Geometry optimization on the cross section of adhesively bonded thin-walled composite beam subjected to axial crushing load

Xiao,

Ye,

Hou

et al. 2024

Academia Materials Science

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Adhesive bonding is widely used in structural connection of composite components due to its capacity to effectively avoid inducing stress concentration and damage in composite components. This work applies a design optimization methodology on the geometry of cross section and ply thickness in adhesively bonded CFRP (carbon fiber-reinforced plastic), hat-shaped, thin-walled beam in automobiles to achieve car body lightweight design. A multi-objective and multi-constraint design optimization problem was formulated to find the optimum key cross-section size and ply thickness of the hat thin-walled beam. The minimum total material cost and maximum energy absorption (EA) during the axial crushing test of the CFRP beam were selected as the optimization objectives. The non-dominated sorting genetic algorithm II (NSGA-II) was introduced to search for global optimum solution, and radial basis function (RBF) approximations for the objective functions were applied to reduce the computational cost. It was revealed that EA increased by 8.28%, while the total weight and cost decreased by 3.14% and 3.23%, respectively, and can thus provide a guidance in vehicle composite component design.

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Progressive failure method and structural optimization analysis of marine sandwich L-shaped composite joints

Cited by 5 publications

References 31 publications

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

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

A unified framework for equivalent single layer theories of composite beams, plates, and shells: a review

Geometry optimization on the cross section of adhesively bonded thin-walled composite beam subjected to axial crushing load

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