Finite Element Analysis of the thermo-Mechanical Behavior of composite Pipe Elbows under Bending and Pressure loading

Abdelouahed, Elamine; Mokhtari, Mohamed; Benzaama, Habib

doi:10.3221/igf-esis.49.63

Cited by 15 publications

(6 citation statements)

References 25 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two pipes connected by an elbow in the middle were analyzed in Abaqus under inner pressure loading. The study proved the effectiveness of the Hashin criterion [ 24 ]. The influence of the winding angle effect on the strength of composite materials and composite elbows was carefully studied [ 25 , 26 , 27 , 28 ] and the results demonstrated the accuracy of the geodesic method [ 29 ].…”

Section: Introductionmentioning

confidence: 88%

Rupture of an Industrial GFRP Composite Mitered Elbow Pipe

2021

View full text Add to dashboard Cite

This paper examines the immature rupture of glass fiber reinforced plastic composite (GFRP) mitered elbow pipes. The GFRP composite mitered elbow pipe’s lifespan was twenty-five years; however, the pipes in question experienced immature failures, resulting in the reduction of their lifetimes to seven, nine, and ten years, respectively. The GFRP cooling water mitered elbow pipe’s service conditions operate at a pressure of up to 7 bar and temperatures between 15–36 °C. The root cause of failure was determined using visual inspection, analytical, microstructural, mechanical characterizations, and chemical analysis. The initial visualization inspection revealed an improper joint between the composite overwrapped and the straight pipe sections. Mechanical properties along the axial, hoop and 45° from the axial direction were obtained. The results from the analytical analysis indicated that the elbow might withstand the operating pressure depending on the quality factor, which was confirmed to be low due to the elbow joint’s improper fabrication process. As evidence of this, the numerical analyses’ results indicated that the safety factor in withstanding the operating pressure of 5 bar is dropped down in the radial region where the thickness is reduced to simulate the failure zone. This study’s findings recommend that thickness of less than 15 mm be reinforced using overwrapped composites. It is recommended for future installations that the fabrication process be appropriately monitored and controlled and avoids using 45°/−45° fiber orientation and multiple layers of chopped strand mat glass fiber.

show abstract

Section: Introductionmentioning

confidence: 88%

Rupture of an Industrial GFRP Composite Mitered Elbow Pipe

2021

View full text Add to dashboard Cite

show abstract

“…Under a pressure of 30bar and at the same temperature of 40 ° C, the angle effect of the elbow is well presented in the structural response up to their damage and under different bending modes. (10) shows that the response of the elbow to the bending moment is nonlinear up to the maximum moment with different levels, widely different by the effect of the angle of the elbow. We notice that at a certain moment, this level is maximum.…”

Section: Effect Of the Angular Elbows And Loading Condition On The Famentioning

confidence: 99%

“…The location of these defects categorizes the mode of damage. Most of the time, they result in the degradation of their mechanical characteristics [9][10]. This is the reason why all these phenomena are the subject of numerous research studies applied to industry.…”

mentioning

confidence: 99%

“…This is the reason why all these phenomena are the subject of numerous research studies applied to industry. The study of these tubular structures is the subject of several researchers such as the work of Abdelouahed et al [10] where they digitally analyzed the structure under pressure and damage moment by thermal effect and in the presence of defects. Shao [11] evaluated thermal stresses as well as Kandil et al [12] by the digital model.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Using XFEM to Predict the Damage with Temperature of the Steel Pipe Elbows under Bending and Pressure loading

Hammadi

Mokhtari

Benzaama

et al. 2020

Frattura Ed Integrità Strutturale

Self Cite

View full text Add to dashboard Cite

The pipes, during their service, are subjected to accumulated loads such as internal pressure and that of the soil. The latter considerably accelerate their damage. In this work, the bending moment stress of API 5L X70 category steel elbows under thermo-mechanical behavior and in the presence of pressure were studied. We used FEM (finite element method) through the numerical calculation code ABAQUS and the XFEM technique for structural damage while using solid elements as a structure. Our objective is to evaluate the response and resistance capacity of the steel elbow by its location in the tube–elbow-tube system under a mixed loading of pressure and moment for all scenarios. It is based on a single standardized dimensioning of the elbow (diameter and thickness). The effect of several parameters has been studied such as the type of loading and the pressure levels, which are clearly conditioned by the level of damage. Numerical damage results are presented by moment-rotation curves. They illustrate the variation in damage as a function of these effects which act simultaneously.

show abstract

“…The numerical and experimental results showed a satisfactory consistency for the different configurations tested. Abdelouahed [26] investigated the behaviors of composite structures of a tubular model connected by an elbow in the middle in Abaqus. They presented the effectiveness of the Hashin criterion under complex geometric and inner pressure loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Finite Element Analysis of Composite Elbows

Qiao

Zhang

Ye³

et al. 2019

Materials

View full text Add to dashboard Cite

“Tube beams” are common lightweight structures, which have domestic and industry applications, and are often subjected to complex multidirectional loads. Therefore, metals with mature manufacturing methods and isotropic properties are commonly used in the fabrication of these structures, which are preferred to be lighter in weight. Although polymer matrix composites are generally used for weight reduction, their conventional manufacturing methods, such as pultrusion and filament-winding, cannot meet the isotropic requirements. Moreover, research on bent tube beams (elbows) is rare. Therefore, a self-made glass fiber/epoxy polyvinyl ester fabric prepreg and a self-designed mold were used in this study to prepare an isotropic composite double-bent elbow by a silicone rubber airbag-assisted process. The load capacity of the elbow was tested and validated by the finite element method. A strength and deformation of up to 3448 N and 2.84 mm respectively, were achieved. The simulation and experimental results were consistent: the error for the load capacity and deformation was only 4.15% and 7.75% respectively, under the max stress criterion.

show abstract

Finite Element Analysis of the thermo-Mechanical Behavior of composite Pipe Elbows under Bending and Pressure loading

Cited by 15 publications

References 25 publications

Rupture of an Industrial GFRP Composite Mitered Elbow Pipe

Rupture of an Industrial GFRP Composite Mitered Elbow Pipe

Using XFEM to Predict the Damage with Temperature of the Steel Pipe Elbows under Bending and Pressure loading

Fabrication and Finite Element Analysis of Composite Elbows

Contact Info

Product

Resources

About