Failure of chopped carbon fiber Sheet Molding Compound (SMC) composites under uniaxial tensile loading: Computational prediction and experimental analysis

Chen, Zhangxing; Tang, Haibin; Shao, Yimin; Sun, Qingping; Zhou, Guowei; Li, Yang; Xu, Hongyi; Zeng, Deliang; Su, Xuming

doi:10.1016/j.compositesa.2018.12.021

Cited by 45 publications

(20 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The UD RVE is then used to investigate the mechanical properties and failure envelopes of UD CFRP composites under multiple loading conditions, which inform us to propose an effective elasto-plastic constitutive law with damage evolution for homogenized UD composites. Chips in meso-scale SMC RVE and fiber tows (yarns) in meso-scale woven RVE have very similar properties as UD RVE [16]. Therefore, the elasto-plastic-damage material law and results from UD RVE are used to describe the properties of chips and fiber tows, which are basic structures of meso-scale SMC and woven RVE.…”

Section: Synopsis Of Icme Frameworkmentioning

confidence: 99%

“…In line with the overarching goal of ICME to reduce the time and the cost in the discovery and development of novel CFRP composites structures, multi-scale computational models have been established and embraced in our previous work and those of other researchers [12][13][14][15][16][17][18][19][20][21][22][23][24]. A majority of those models deliver the concerned information embedded in equations and parameters from lower-scale simulations to higher-scale, which is termed as the bottom-up hierarchical approach [17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

Sun

Zhou

Meng

et al. 2021

Composites Science and Technology

Self Cite

View full text Add to dashboard Cite

A bottom-up multi-scale modeling approach is used to develop an Integrated Computational Materials Engineering (ICME) framework for carbon fiber reinforced polymer (CFRP) composites, which has the potential to reduce development to deployment lead time for structural applications in lightweight vehicles. In this work, we develop and integrate computational models comprising of four size scales to fully describe and characterize three types of CFRP composites. In detail, the properties of the interphase region are determined by an analytical gradient model and molecular dynamics analysis at the nano-scale, which is then incorporated into micro-scale unidirectional (UD) representative volume element (RVE) models to characterize the failure strengths and envelopes of UD CFRP composites. Then, the results are leveraged to propose an elasto-plastic-damage constitutive law for UD composites to study the fiber tows of woven composites as well as the chips of sheet molding compound (SMC) composites. Subsequently, the failure mechanisms and failure strengths of woven and SMC composites are predicted by the meso-scale RVE models. Finally, building upon the models and results from lower scales, we show that a homogenized macro-scale model can capture the mechanical performance of a hat-sectionshaped part under four-point bending. Along with the model integration, we will also demonstrate that the computational results are in good agreement with experiments conducted at different scales. The present study illustrates the potential and significance of integrated multi-scale computational modeling tools that can virtually evaluate the performance of CFRP composites and provide design guidance for CFRP composites used in structural applications.

show abstract

Section: Synopsis Of Icme Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

Sun

Zhou

Meng

et al. 2021

Composites Science and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Selezneva et al [ 32 ] estimated the strand failure strength of ROS carbon/PEEK (thermoplastic) and carbon/epoxy (thermoset) composites by applying the classical laminate theory and Hashin's failure criteria, while the strand–strand interface strength (debonding/delamination strength) is calculated by using the shear strength and fracture toughness criteria. Recently, Chen et al [ 33 ] proposed a computational framework to predict the tensile failure behavior of ROS‐based CF‐SMC in which they used the paraboloidal yield criterion developed by Tschoegl [ 34 ] and the isotropic damage model proposed by Melro [ 35 ] to model the epoxy matrix. For the elastoplastic behavior of the chopped carbon fiber strands they used the Liu–Huang–Stout yield criterion [ 36 ] and combined it with the Tsai–Wu failure criterion [ 25 ] in order to model the strand damage.…”

Section: Introductionmentioning

confidence: 99%

Application of the stress interaction failure criterion in platelet composite compression molded parts

et al. 2021

View full text Add to dashboard Cite

The stress interaction failure criterion was applied to three compression‐molded sheet molding compound (SMC) materials. Two are epoxy‐based compounds with randomly oriented carbon fiber tows, and the third material consists of glass fiber bundles randomly oriented in a vinyl ester resin. The failure surface was built using tensile test results at different orientations with respect to the flow direction, resulting in combined loads in the principal stress coordinate system. Three unknown variables arise from using only tensile strength values. Solving a system of three equations derived from the criterion function and using the failure values obtained from destructively testing at three different orientations, the unknown variables as well as the interaction strength components were determined. Results show good agreement for all three materials. Overprediction was found in some instances, attributed to the effect of fiber orientation distribution in the part, and to the complex interactions of the filled structures. To allow a more direct comparison between predicted and experimental data, the resulting failure surface was translated to the global coordinate system (σxx) and compared to the data derived from destructive tensile tests. Good agreement for all materials was observed, with underprediction noted for some orientations, attributed in part to the equation solving method and the nature of the mesostructures of the composites, where interactions between the tows, resin, mold walls, and fibers are present. The results of this work show that the methodology described permits the development of a failure surface for SMC materials when limited data is available.

show abstract

“…4 The prediction on the mechanical properties of composites with a volume-mesh model has been proven to match well with experimental data. [5][6][7] However, it remains a challenge to a generate model with an accurate volume mesh in view that a precise scanner, reproducing software and detailed discussion on the convergence of mesh morphology are always required. [4][5][6] Generally, models with volume and voxel mesh both produce comparable results, but a detailed comparison between these two methods would provide guidance for the selection of the mesh morphology under different loading conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7] However, it remains a challenge to a generate model with an accurate volume mesh in view that a precise scanner, reproducing software and detailed discussion on the convergence of mesh morphology are always required. [4][5][6] Generally, models with volume and voxel mesh both produce comparable results, but a detailed comparison between these two methods would provide guidance for the selection of the mesh morphology under different loading conditions. Doitrand et al 8 proposed that the volume mesh is suitable for damage localization by comparing the simulation results of the elastic behaviours of the woven composite using two types of mesh morphologies.…”

Section: Introductionmentioning

confidence: 99%

Analysis of mesoscale modelling strategies for woven composites

Giglio

Manes

2020

Mat Design & Process Comms

View full text Add to dashboard Cite

Considering the wide applications of composite material, it is crucial to understand the corresponding damage mechanisms and mechanical response during the loading process. To achieve this aim, a mesoscale modelling strategy has been employed to provide these details. The voxel mesh and volume mesh are two types of commonly-used mesh morphologies to build a mesoscale Finite Element (FE) model. However, during the establishment of a FE mesoscale model, the effect of unit cell section, mesh size and mesh morphology on the simulation results is rarely analysed in a comprehensive way. In the present work, FE models with various mesh morphologies, unit cells and mesh sizes were built for a glass-fibre woven composite. Parametric analysis was performed under tensile and shear loading conditions and the simulation results were compared based on test data. Further, guidance about the selection of the mesh morphology, unit cell and mesh size were provided for the establishment of a mesoscale model of woven composites.

show abstract

Failure of chopped carbon fiber Sheet Molding Compound (SMC) composites under uniaxial tensile loading: Computational prediction and experimental analysis

Cited by 45 publications

References 42 publications

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

Application of the stress interaction failure criterion in platelet composite compression molded parts

Analysis of mesoscale modelling strategies for woven composites

Contact Info

Product

Resources

About