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Sunday, August 2, 2020 | History

3 edition of Finite-element analyses and fracture simulation in thin-sheet aluminum alloy found in the catalog.

Finite-element analyses and fracture simulation in thin-sheet aluminum alloy

Finite-element analyses and fracture simulation in thin-sheet aluminum alloy

  • 154 Want to read
  • 28 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, For sale by the National Technical Information Service in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Fracture mechanics.,
  • Aluminum alloys -- Fatigue.

  • Edition Notes

    Other titlesFinite element analyses and fracture ....
    StatementJ.C. Newman, Jr., D.S. Dawicke, and C. A. Bigelow.
    SeriesNASA technical memorandum -- 107662.
    ContributionsDawicke, D. S., Bigelow, C. A., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18055273M

    This paper gives a bibliographical review of the finite element methods (FEMs) applied to the analysis and simulation of adhesive bonding, soldering and brazing processes. The bibliography at the end of the paper contains references to papers, conference proceedings and theses/dissertations on the subjects that were published in - Cited by: Fracture mechanics has established itself as an important discipline of growing interest to those working to assess the safety, reliability and service life of engineering structures and materials. In order to calculate the loading situation at cracks and defects, nowadays numerical techniques like finite element method (FEM) have become Brand: Springer Netherlands.

      Two models for the numerical simulation of ductile crack extension in shell structures are presented and compared. They are based on the crack tip opening angle and a cohesive zone approach. After identification of the model parameters and investigations of the mesh dependence, the models are applied to various specimen configurations and structural by:   Continuous critical loading of pressure equipments can affect the structural stability of these plants. The structural stability and mechanical resistance under pressure loads can also be affected by defects. Fracture mechanics assumptions were applied to aluminium alloys to study their effect on its mechanical behaviours. A 3-point bending standard test was employed and the critical Stress Cited by: 1.

      Hybrid experimental-numerical and experimental analyses were used to explore possible dynamic ductile fracture parameters associated with rapid crack propagation in T6 and T3 aluminum alloy, single edge notched (SEN) specimens of mm thickness. Dynamic Moiré interferometry was used to record the displacement field, which was used either to drive a dynamic Cited by: The aim of the present work is to predict the fatigue life of a friction stir welded (FSW) joint in the T aluminum alloy using the finite element method in the framework of Fracture Analysis Code for Two Dimensions (FRANC2D/L).Cited by: 7.


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Finite-element analyses and fracture simulation in thin-sheet aluminum alloy Download PDF EPUB FB2

A two-dimensional, elastic-plastic finite-element analysis was used with a critical crack-tip-opening angle (CTOA) fracture criterion to model stable crack growth in thin-sheet T3 aluminum alloy under monotonic loading after precracking at different cyclic stress by: Get this from a library.

Finite-element analyses and fracture simulation in thin-sheet aluminum alloy. [J C Newman; D S Dawicke; C A Bigelow; Langley Research Center.]. A two-dimensional, elastic-plastic finite-element analysis was used with a critical crack-tip- opening angle (CTOA) fracture criterion to model stable crack growth in thin-sheet T3 aluminum alloy under monotonic loading after precracking at different cyclic stress levels.

A two-dimensional, elastic-plastic finite-element analysis was used with a critical crack-tip-opening angle (CTOA) fracture criterion to model stable crack growth in thin-sheet T3 aluminum alloy under monotonic loading after precracking at different cyclic stress levels.

Tests were conducted on three types of specimens: middle-crack, three-hole-crack and blunt-notch tensile specimens. Abstract. A two-dimensional, elastic-plastic finite-element analysis was used with a critical crack-tip-opening angle (CTOA) fracture criterion to model stable crack growth in thin-sheet T3 aluminum alloy under monotonic loading after precracking at different cyclic stress levels.

Finite element analysis technique is implemented to simulate compact tension test specimen to reveal the fracture properties of thin sheets aluminum alloy T6. The finite element model carried out for compact tension specimen of thin sheets aluminum alloy T6 of 1 and mm thickness to measure energy release rate (GIC).File Size: KB.

To evaluate accurately the formability of automotive aluminium alloy sheet, in this paper, a ductile fracture criterion developed by the author is introduced in finite element : Himam Saheb Shaik. The actual tensile tests data are applied to the finite element simulation.

The verified simulation method has a great importance in practical design of structures and metals. Finite element analysis (FEA) in fracture mechanics problems is mainly performed to verify the experimental results.

The finite element analysis can also lead to predictive schemes in such cases where there is lack of experimental results. The most important point in stable crack growth problems is the crack growth criterion by: Prediction of ductile fractures of metals in engineering structures is a topic of great importance in the automotive, aerospace, and military industries.

Equivalent strain to fracture ε f (or the fracture strain for short) is widely used to define the material Size: KB. Based on a “constant critical CTOA” approach integrated within the framework of 2D and 3D elastic–plastic finite element analyses, Newman et al., have successfully simulated the stable crack growth and instability behavior for several simple and complex thin-sheet aluminum by:   Newman JC Jr, Dawicke DS, Bigelow CA.

Finite element analyses and fracture simulation in thin sheet aluminum alloy. NASA, TM, Google ScholarCited by: 1. The majority of these CTOA characterization and analysis studies have focused on aluminum alloys in thin-sheet form in support of the aerospace industry's damage tolerant and aging-aircraft efforts.

However, the effect of specimen thickness on the characterization and evaluation of this fracture parameter has not been thoroughly by: Three-dimensional finite element simulation of crack extension in aluminium alloy FC.

Fatigue Fract. Engng. Mat. Struct. 21, – Google Scholar. de-Andres, A., Perez, J.L. and Ortiz, M. Elasto-plastic finite element analysis of three-dimensional fatigue crack growth in aluminum shafts subjected to axial loading Cited by: In this work, the plasticity and ductile fracture behaviors of an aluminum alloy H are studied through a series of experiments and finite element analyses.

A recently developed stress state dependent plasticity model, the I 1 – J 2 – J 3 plasticity model, is implemented to describe the plastic response of this by: In the present study, the relation of the ductile fracture criterion to the FLD is clarified.

The limit strains for both necking and fracture are predicted by the combination of the finite element simulation with the ductile fracture criterion for various strain paths in biaxial stretching of aluminium alloy sheets, and the FLD is by: Three-dimensional finite element simulation of crack extension in aluminium alloy FC January Fatigue & Fracture of Engineering Materials & Structures 21(10) A small strain theory, three-dimensional elastic-plastic finite element analysis was used to simulate fracture in thin sheet T3 aluminum alloy in the T-L orientation.

Both straight and. ABSTRACT Fracture tests were conducted on middle crack tension (M(T)) and compact Dawicke, D. S., and Bigelow, C. A., "Finite-Element Analyses and Fracture Simulation in Thin-Sheet Aluminum Alloy," NASA TM, August 2 Dawicke, D.

and Sutton, M. A., "Crack-Tip Opening Angle. A finite element analysis of stable crack growth in an aluminium alloy Article in Engineering Fracture Mechanics 70(9) June with 15 Reads How we measure 'reads'.

This book introduces the development of the extended finite element method for fracture mechanics and crack analysis.

XFEM is an extension to the classical finite element method using the concepts of partition of unity and meshless of the main advantages of the method is that by increasing a small number of degrees of freedom, far more accurate solutions can be by:   Finite element analysis of a high-strength aluminum alloy perforated by a 20 mm projectile Finite element simulation of full scale car crash based % on solid elements - Duration.Concluding Remarks This paper reviewed the CTOA/CTOD fracture criterion and the use of the finite-element method to simulate fracture.

Fracture results, measurements and analyses on aluminum alloys have supported the use of a "constant" CTOA value from initiation to failure.