Effective mechanical properties of EM composite conductors: an analytical and finite element modeling approach

Sun, Wei; Tzeng, Jerome T.

doi:10.1016/s0263-8223(02)00129-0

Cited by 13 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These comparisons are presented in Figure 4 for EM composite conductor without a cooling channel, and Figure 5 for EM composite conductor with a cooling channel, respectively. The results of effective mechanical properties of the EM composite conductor predicted based on the asymptotic homogenization theory and the developed 3DHOMOG program agree well with the results predicted by analytical model and standard finite element model reported in [3][4][5], thus demonstrate the applicability of the asymptotic homogenization theory to predict the effective properties and the unit cell structural anisotropy of the EM composite conductor. However, the asymptotic homogenization theory can offer additional advantage of global-local analysis for conduct design, as pointed out before.…”

Section: Application Examplessupporting

confidence: 79%

“…The Level 2 homogenization scheme was further applied to calculate the overall effective mechanical constants of the conductor through a combined sequence of homogenization from a hybrid displacement and traction-prescribed boundary conditions applied to the representative conduct unit cell. Although good agreements can be observed between the predictions based on the reported homogenization model and the finite element model [3][4][5], there are some limitations and inherent errors that need to be considered in applying these models to predict the composite effective modules. Such limitations and errors were caused by, for example, the upper and lower bound errors that resulted from the prescribed different boundary conditions [7], and the effect of the boundary and representative element size in the finite element prediction [8].…”

Section: Introduction E Lectrical Machinery (Em) Is An Important Compmentioning

confidence: 99%

“…Therefore, the application of the asymptotic homogenization makes it possible to investigate the conductor structural mechanical behavior, stress and deformation at both the global (macro-structural) level and local (micro-structural) level, thus enables the analyses at a detailed level of individual constituents including geometries and properties for failure analysis. In addition, the asymptotic homogenization does not have an inherent bound error and the boundary effect in the effective constant calculation comparing to the analytical and numerical models reported in [3][4][5]. However, although its theory has been well developed, the numerical implementation of the asymptotic homogenization has been very limited due to the complicity of the computational algorithm.…”

Section: Introduction E Lectrical Machinery (Em) Is An Important Compmentioning

confidence: 99%

See 2 more Smart Citations

Asymptotic Homogenization and Numerical Implementation to Predict the Effective Mechanical Properties for Electromagnetic Composite Conductor

Fang

Sun

Tzeng

2004

Journal of Composite Materials

View full text Add to dashboard Cite

Conventional mechanics-based homogenization model and the finite element approaches have inherent limitations and errors when applying to calculate the effective properties of composites. These errors are either caused from the upper and lower bounds due to the difference of the prescribed boundary conditions, or from the effect of the size and the boundary condition of the representative element. Asymptotic theory-based homogenization does not have the inherent bounds and boundary errors but requires a complicated numerical implementation in order to apply the theory. This paper reports a development of an asymptotic theory-based homogenization approach with its numerical implementation and considers its application to predicting the effective mechanical properties of electric conductor consisting of conductor core and multi-layered composite insulations. The numerical implementation is developed based on using the finite element technique for the meshing generation and for the application of boundary conditions, with the developed computational algorithm for numerical calculation of effective homogenization properties. The developed computational program bridges the commercial CAD and finite element software, thus allows the design studies and parametric analyses of composite conductors with complex geometry and material composition.

show abstract

Section: Application Examplessupporting

confidence: 79%

Section: Introduction E Lectrical Machinery (Em) Is An Important Compmentioning

confidence: 99%

Section: Introduction E Lectrical Machinery (Em) Is An Important Compmentioning

confidence: 99%

See 1 more Smart Citation

Asymptotic Homogenization and Numerical Implementation to Predict the Effective Mechanical Properties for Electromagnetic Composite Conductor

Fang

Sun

Tzeng

2004

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…The elastic constants were found experimentally for composite materials, as shown in Table 4. These properties were used with conventional laminate theory to calculate the theoretical effective properties of the orthotropic monolithic model [18], as shown in Table 6. The glass and carbon fibre/epoxy layers were modelled with homogenized linear elastic orthotropic materials, On the other end, the torque was applied as distributed forces in the tangential direction to the outside of the fixture of the hybrid shaft.…”

Section: A Hybrid Aluminium/composite Specimen Modellingmentioning

confidence: 99%

Static and dynamic characteristics of a hybrid aluminium/composite drive shaft

Mutasher

Sahari

Sapuan

2007

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

A static torque and power transmission capacities of a hybrid aluminium/composite drive shaft, fabricated by a wetted filament winding method, were investigated. Special mechanisms for static torsion and power transmission test setups were designed and fabricated. The following different fibre types were used: carbon, glass, one epoxy, and hardener. The static and dynamic characteristic of the hybrid aluminium/composite drive shaft with respect to the fibre types stacking sequences winding angle and number of layers were investigated. From the experiments, it was found that the static and dynamic torque capacity for a winding angle of 458 is higher than 908 for both glass and carbon fibres. From the power transmission test, it was also found that the percentage between the static torque and dynamic torque is approximately 7 -15 per cent. In addition, in the static torsion test, the aluminium tube yielded first at the central region of the shaft, followed by crack propagation in the composite shaft along the fibre direction, which eventually caused the delamination of the composite layers from the aluminium tube. On the other hand, in the power transmission test, different locations of failure were observed along the gauge length of the specimen. The shaft's being laminated with a stacking sequence of [90/ þ 45/245/90] and [þ45/245/90/90] resulted in the same behaviour in the torque -angle and the twist relation. The power transmission capacities were close to each other and this in turn satisfied the lamination theory. The finite-element method was used to analyse the hybrid shaft under static torsion and ANSYS finite-element software was used to perform the numerical analysis for the hybrid shaft. A full scale hybrid specimen analysis was done. Elasto-plastic properties were used for the aluminium tube and linear elastic for composite materials. Good agreement was obtained between the finite-element predictions and experimental results.

show abstract

“…The flexural mechanical properties of carbon fibre composite (CFC) have been extensively investigated to promote the application of CFC [9][10][11][12]. An analytical and finite element modeling approach was proposed to predict the effective mechanical properties of a composite conductor [13]. The failure process of hybird composite rods was analyzed by using acoustic emissions and subsequent Scanning Electron Microscope (SEM) [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Diameter Ratio on the Flexural Stress of Carbon Fibre Composite Rod

Jiang¹

2018

Proceedings of the 2018 3rd International Conference on Control, Automation and Artificial Intelligence (CAAI 2018)

View full text Add to dashboard Cite

Carbon fibre composite rod (CFCR) is an important part during the design of Aluminum Conductor Composite Core (ACCC) conductor. CFCR is used to improve the bearing capacity in order to make sure the safety of electric power supply. The flexural failure of CFCR could lead to the outage of electric power. Therefore, it is important to investigate the flexural behavior of CFCR. The diameter of CFCR and the diameter of wheel have a great effect on the flexural failure of CFCR. This paper presents a finite element model (FEM) to analyze the stress in CFCR under flexural loading. Based on the proposed FEM, the effect of diameter ratio on the flexural stress of CFCR is analyzed. Using the calculated results, the variation of flexural stress with the diameter ratio is obtained. These conclusions would help to design Aluminum Conductor Composite Core (ACCC) conductor.

show abstract

Effective mechanical properties of EM composite conductors: an analytical and finite element modeling approach

Cited by 13 publications

References 11 publications

Asymptotic Homogenization and Numerical Implementation to Predict the Effective Mechanical Properties for Electromagnetic Composite Conductor

Asymptotic Homogenization and Numerical Implementation to Predict the Effective Mechanical Properties for Electromagnetic Composite Conductor

Static and dynamic characteristics of a hybrid aluminium/composite drive shaft

Effect of the Diameter Ratio on the Flexural Stress of Carbon Fibre Composite Rod

Contact Info

Product

Resources

About