Question

请帮我看看有没有语法上的错误谢谢

Carbon fiber reinforced composite (CFRP) has obvious advantages in weight reduction, energy saving and other aspects. With its excellent performance and reliable working strength, it has gradually become a substitute for steel materials. Although it can be formed once in the manufacturing process, in order to meet the load-bearing requirements of some large-scale structures, composite materials are usually mechanically connected with other materials, which is inevitable It is necessary to drill the material, which will damage the integrity of the material and accelerate the damage trend of the material. This kind of damage is a gradual and irreversible process. Multiple damage modes interweave and induce each other, which makes the strength degradation rule of the material elusive and makes the fatigue life of the material difficult to evaluate. The finite element simulation analysis can solve this problem well. ABAQUS, as the most advanced general finite element analysis software, has been widely used by researchers at home and abroad. Based on the ABAQUS finite element model, this paper studies and analyzes the strength change and damage expansion behavior of materials during the loading process of CFRP with holes under different displacement loads, analyzes the influence of loading process on the damage behavior of connectors, and reveals the damage behavior Pattern. The main research contents and achievements are as follows:

(1) Based on the complex function, the mathematical model of stress-strain around the hole was established, and the failure process of composite laminate was modeled by finite element simulation.

(2) The progressive damage of composite laminates was simulated by finite element method, and the progressive damage behavior of CFRP was explored to reveal the damage mechanism of the area around the hole.

Answer 1

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追问

太谢谢您了