三维实体有限元与无旋转梁单元相结合的纤维增强聚合物钢筋非线性分析

IF 0.3 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria Pub Date : 2023-01-01 DOI:10.23967/j.rimni.2023.05.001

F. Zarate, T. Villette, X. Martínez, F. Rastellini, D. Ceón, C. Andrade, E. Oñate

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引用次数: 0

摘要

我们提出了三维(3D)实体单元和无旋转梁单元的组合，用于钢筋纤维增强聚合物(FRP)的非线性分析。基体材料采用三维实体单元建模，纤维采用无旋转梁单元建模。梁单元中不存在旋转变量，可以使用仅具有位移节点自由度的公式直接耦合三维实体和梁单元。实体单元和梁单元都是用更新的拉格朗日描述来表述的。采用弹性损伤模型来模拟基体和纤维材料的行为。在轴向、弯曲和剪切试验中对FRP筋直至断裂的分析实例中，验证了组合三维梁单元公式的有效性和准确性，并提供了实验结果。

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Combination of 3D solid finite elements with rotation-free beam elements for non-linear analysis of fiber reinforced polymer rebars

We present a combination of three dimensional (3D) solid elements and rotation-free beam elements for non-linear analysis of fiber-reinforced polymer (FRP) of rebars. The matrix material is modelled by 3D solid elements while the fibers are modelled with rotation-free beam elements. The absence of rotation variables in the beam elements allows the straightforward coupling of 3D solid and beam elements using a formulation with displacement nodal degrees of freedom only. Both solid and beam elements are formulated in an updated Lagrangian description. The behavior of the matrix and the fiber material are modelled with an elastic-damage model. The efficiency and accuracy of the combined 3D-beam element formulation are verified in examples of application to the analysis of FRP rebars up to fracture in axial, bending and shear tests for which experimental results are available.

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来源期刊

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 工程技术-工程：综合

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish, Portuguese and English. The scope of the journal includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientifics and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinar exchange and thus shortens the distance between theoretical developments and practical applications.