Analysis of progressive failure in composites

Ochoa, Ozden O.; Engblom, John J.

doi:10.1016/0266-3538(87)90092-3

Cited by 68 publications

(28 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most progressive analyses check ply-cracking, update modulus reduction, and use iterative decision making to cracking at applied load increments [21][22][23][24][25][26][27]. The present study suggests a new progressive failure analysis by changing through-the-thickness temperatures associated with fuel leakage as well as equivalent laminate stiffness matrix, whenever damaged plies are detected.…”

Section: Introductionmentioning

confidence: 92%

RETRACTION: An Initial and Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design

2008

Journal of Composite Materials

View full text Add to dashboard Cite

Thermal residual stresses, internal pressure stresses, and acceleration stresses during launch were evaluated and quantified for cryogenic composite fuel tank design. Both failure initiation and progression of graphite/epoxy laminate system (IM7/977-2) [0/90/90/0/0/90] s and graphite/BMI laminate system (IM7/5250-4) [0/90/90/0/0/90] s were investigated using the non-isothermal classical laminate and plate theory (CLPT) and the maximum stress failure criterion. The thermal residual stresses in the transverse direction are the dominant stresses on each ply in the launch stage. After initial ply cracking, through-the-thickness temperature change of a laminate related to fuel leakage as well as a laminate stiffness matrix change was applied to the progressive failure analysis. The fuel leakage-based progressive analysis shows a higher number of initial ply cracking does not necessarily mean a higher chance of matrix cracking in all plies. The graphite/BMI laminate has such an advantage as transverse thermo-mechanical resistance over the graphite/epoxy laminate at an initial exposure to À2538C and 1500 kPa. In terms of complete laminate matrix cracking, however, the graphite/epoxy laminate is more resistant to transferring stresses to other plies than the graphite/BMI laminate.KEY WORDS: cryogenic composite fuel tank, progressive failure analysis, fuel leakage, IM7/977-2 (graphite/epoxy laminate system), IM7/5250-4(graphite/BMI laminate system).

show abstract

Section: Introductionmentioning

confidence: 92%

RETRACTION: An Initial and Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design

2008

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…Ochoa and Engblom [99] used a higher-order displacement element. The element had eight nodes with seven degrees of freedom for the corner nodes and three degrees of freedom for the side nodes.…”

Section: Laminate Composite Progressive Failurementioning

confidence: 99%

Nonlinear Formulations of a Four-Node Quasi-Conforming Shell Element

Lomboy

Suthasupradit

Kim

et al. 2009

Arch Computat Methods Eng

View full text Add to dashboard Cite

The quasi-conforming technique was introduced in the 1980's to meet the challenge of inter-elements conforming problems and give a unified treatment of both conforming and nonconforming elements. While the linear formulation is well established, the nonlinear formulation based on the quasi-conforming technique that includes geometric and material nonlinearity is presented in this paper. The formulation is derived in the framework of an updated Lagrangian stress resultant, co-rotational approach. The geometric nonlinear formulation provides solutions to buckling and postbuckling behaviour while the material nonlinear formulation considers the spread of plasticity within the element while maintaining an explicit construction of element matrices. Aside from the elasto-plastic constitutive relation, formulations on laminate composites and reinforced concrete are also presented.The formulations of laminate composite and reinforced concrete material are present based on the layer concept, the material properties can vary throughout the thickness and across the surface of a shell element. The various failure criteria for laminate composite are included in the formulation which makes it possible to analyses the progressive failure of fibre and matrix. For the reinforced concrete material, the nonlinearities as a result of tensile cracking, tension stiffening between cracks, the nonlinear response of concrete in compression, and the yielding of the reinforcement are considered. The steel reinforcement is modeled as a bilinear material with strain hardening.

show abstract

“…Failure criteria for unidirectional composites proposed by Hashin [14] and Yeh and Kim [15] were widely employed and demonstrated to be an effective failure model [16][17][18][19]. Davies and Zhang [20] dealt with carbon fiber laminated composites impacted by a single mass.…”

Section: Introductionmentioning

confidence: 99%

Ultimate Strength and Failure Process of Composite Laminated Plates Subjected to Low-Velocity Impact

Lee

Huang

2003

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

A steel impactor was used in drop tests to impact composite laminated plates constructed using carbon-epoxy prepregs. The impact force and strain histories were recorded as well. Damage incurred from a low-velocity impact much closely resembled that from static crushing. This investigation creates a user-defined material subroutine (UMAT) of the FEM software ABAQUS, using our method of stiffness progressive modification, such that extreme failure is accurately simulated until the plates are thoroughly crushed. Using the results from the static crush simulation and the aspect of energy conservation, the dynamic impact force given with different impactor masses and initial velocities can be rapidly predicted while making significant savings in computing resources.

show abstract

Analysis of progressive failure in composites

Cited by 68 publications

References 9 publications

RETRACTION: An Initial and Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design

RETRACTION: An Initial and Progressive Failure Analysis for Cryogenic Composite Fuel Tank Design

Nonlinear Formulations of a Four-Node Quasi-Conforming Shell Element

Ultimate Strength and Failure Process of Composite Laminated Plates Subjected to Low-Velocity Impact

Contact Info

Product

Resources

About