【摘要】 玻璃纤维（简称“玻纤”）增强塑料在铁道机车等领域中应用广泛。本研究基于连续壳单元，提出一种考虑损伤的玻纤方格布增强塑料有限元建模方法。该方法的单元截面由树脂层和玻纤层交替组成，各层力学行为均由横向各向同性本构模型表征，失效起始判断采用Hashin失效准则，损伤演化基于能量准则。模型参数依据拉伸试验的应力-应变曲线标定。拉伸和弯曲试验结果和模拟结果对比表明，二者符合较好。依据BS EN 12663-1:2010+A2:2023，该方法应用于某城轨车辆操作台头罩的静强度分析，结果表明本研究建立的建模与分析方法能够为轨道交通玻纤增强塑料部件的工程设计与安全评估提供有效工具。更多还原

【Abstract】 Glass fiber reinforced plastics have been widely used in fields such as railway locomotives. This study proposes a finite element modeling method for woven glass fabric reinforced composites based on continuum shell element in consideration of damage. The cross-section of the element is composed of alternating resin layers and glass fiber layers, and the mechanical behavior of each layer is’ characterized by a transversely isotropic constitutive model. The initiation of failure is judged by Hashins failure criterion, while the damage evolution is based on energy criterion. The model parameters are calibrated according to the stress-strain curve of the tensile test. The comparison of the tensile and bending test results with the simulation results shows a good agreement. According to BS EN12663-1:2010+A2:2023, this method is applied to the static strength analysis of the front hood of the operation console on a urban rail vehicle. The results show that the modeling and analysis method established in this study can provide an effective tool for the engineering design and safety evaluation of glass fiber reinforced polymer components for rail transit application.更多还原