A method for predicting the lap joint structure strength of a hydrogel adhesive layer

By simulating the overlapping structure of the hydrogel adhesive layer using finite element software, and combining experimental data with the Cohesive Zone Model theory, the problem of inaccurate strength prediction of the hydrogel adhesive layer in the prior art was solved. This enabled accurate strength prediction of the hydrogel adhesive layer under different stress conditions and provided a theoretical basis for the adhesive structure.

CN115422809BActive Publication Date: 2026-02-10CHINA UNIV OF MINING & TECH
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Patent Information

Application Number
CN202211176005.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-26
Publication Date
2026-02-10
Estimated Expiration
2042-09-26

AI Technical Summary

Technical Problem

In existing fracture treatment methods, the structural strength prediction methods for hydrogel adhesive layers mainly focus on the fracture of the hydrogel material rather than the destruction of the adhesive layer. This results in the inability to accurately predict the strength of the bonded structure, affecting the design and application of adhesives.

Method used

The overlapping structure of the hydrogel adhesive layer was simulated using the finite element software Abaqus. By establishing a three-dimensional fracture overlap model, the parameters of the hydrogel adhesive layer were calculated. Combined with experimental data, the strength of the hydrogel adhesive layer was predicted using the Cohesive Zone Model theory.

Benefits of technology

It enables accurate strength prediction of hydrogel adhesive layers under different stress conditions, provides a theoretical basis for adhesive structures, improves the accuracy and applicability of prediction, and is suitable for the practical application of hydrogels in medicine.

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Abstract

The application discloses a kind of water gel adhesive layer lap joint structure strength prediction method, through the parameter of water gel adhesive layer, lap joint structure modeling, using finite element software calculation, the steps of obtaining calculation result and analysis are carried out lap joint structure strength prediction, and can be established according to different lap joint structure Required model, in combination with water gel mechanical property test data, obtain strength prediction related parameters by theoretical calculation method, then realize strength prediction in finite element software, obtain adhesive layer failure process, effectively solve the various problems of lap joint structure strength prediction containing water gel adhesive layer, not limited to stress condition and lap joint structure, more widely applicable.
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