聚合物复合材料在固化过程中的残余应力

Q3 Materials Science

Macromolecular Symposia Pub Date : 2024-08-16 DOI:10.1002/masy.202400012

Raffaele Verde, Luigi Grassia, Alberto D'Amore

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引用次数: 0

摘要

提出了一种模拟聚合物基复合材料固化过程的数值程序。该模型适用于微观机械层面的碳-环氧复合材料，用于预测固化过程结束时的残余应力以及最重要的固化过程参数的演变。有限元模型由 Ansys APDL 环境编写，包括两个必须连续求解的模块：热动力学模块和结构模块。在每个时间步中，首先解决热/动力学问题，然后利用温度和转换度曲线结果计算粘弹性能，从而计算残余应力。

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Residual Stress in Polymeric Composites During Curing

A numerical procedure to simulate the curing process of polymer-based composites is proposed. This model is applied to a carbon-epoxy composite at a micromechanical level to predict residual stress at the end of the process and the evolution of the most important process parameters. A finite element model is written in the Ansys APDL environment and comprises two moduli that must be solved consecutively: the thermal–kinetical and structural modules. At each timestep, first thermal/kinetics problem is solved, then the temperature and degree of conversion profile results are used to calculate the viscoelastic properties, allowing the calculation of residual stress.

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来源期刊

Macromolecular Symposia Materials Science-Polymers and Plastics

CiteScore

1.50

自引率

0.00%

发文量

226

期刊介绍： Macromolecular Symposia presents state-of-the-art research articles in the field of macromolecular chemistry and physics. All submitted contributions are peer-reviewed to ensure a high quality of published manuscripts. Accepted articles will be typeset and published as a hardcover edition together with online publication at Wiley InterScience, thereby guaranteeing an immediate international dissemination.