An efficient GUI update for BEM-FEM mixed mesh generation

Neto, Álvaro Martins Delgado; Oliveira, Thiago Campos de; Gomes, Gilberto

doi:10.1080/15502287.2019.1632975

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…BemCracker2D is a program for elastostatic analysis of 2D problems to performing analyzes using the Boundary Element Method [37][38][39][40][41]. This software performs modeling of the standard BEM and the incremental analysis strategy for problems involving cracks [42].…”

Section: Boundary Element Methodsmentioning

confidence: 99%

A Probabilistic Approach in Fuselage Damage Analysis via Boundary Element Method

Gomes¹,

Oliveira²,

Evangelista³

2022

Advances in Fatigue and Fracture Testing and Modelling

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This chapter presents a new alternative approach to the analysis of the fatigue life of aircraft fuselage parts considering the compliance of internal elements to replace the classical model of critical crack size. In this case, from a global–local analysis using the boundary element method (BEM), induced stresses at a macro model, and their effects on micro models are evaluated. The BEM enables efficient simulations of the propagation of initial defects to assess the damage tolerance. For this purpose, computational techniques were developed that allowed evaluating these models, through a probabilistic treatment to assess damage tolerance and fatigue life. Finally, this technique is shown as an alternative to ensure the integrity and proper operation of fuselage panels avoiding reaching a Limit State during its projected lifespan.

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Section: Boundary Element Methodsmentioning

confidence: 99%

A Probabilistic Approach in Fuselage Damage Analysis via Boundary Element Method

Gomes¹,

Oliveira²,

Evangelista³

2022

Advances in Fatigue and Fracture Testing and Modelling

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Section: Boundary Element Methodsmentioning

confidence: 99%

“…Kysar [40,41] analyzed the crack formation behavior across the copper/sapphire interface developed by diffusion welding by multiple experimentation and theoretical studies. They noticed that the propagation velocity of brittle crack was much higher compared to that of ductile one.…”

Section: Crystal Plasticity Modelmentioning

confidence: 99%

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Advances in Fatigue and Fracture Testing and Modelling

2022

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is the principal and a lead academic of fracture and fatigue in the Steel and Metals Institute, Swansea University, Wales. His role there involves in-house manufacturing (i.e., casting) of steel as well as testing its mechanical properties and fracture characteristics under various conditions. Dr. Abdallah has also worked at the Rolls-Royce University Technology Centre, Swansea University, where he was involved in the research and development of high-temperature alloys utilised in aero-engines. The power gearbox in the Rolls-Royce Ultrafan aero-engine is one of the major projects on which Dr. Abdallah has been working for several years. He has worked as a consultant for various industries in the United Kingdom, such as Airbus, TIMET, ETD, Rolls-Royce, within Swansea Materials Research and Testing (SMaRT) Ltd. Dr. Abdallah leads or has led, several modules at Swansea University. He also supervises several students working on various projects related to steel and metal alloys as well as the fatigue performance and life predictions of metallic structures. Dr. Abdallah has numerous journal publications, books, and international conferences to his credit. His research interests include steel and metals, composite materials, materials characterisation, creep and fatigue, life predictions of materials, thermo-mechanical testing, heat treatment, powder metallurgy, and diffusion bonding and brazing.Dr. Aldoumani is the director of Innovative Technologies & Engineering Consultancy House (ITECH) Ltd., a registered business in the United Kingdom with headquarters in London. She provides services in metallic and composite structures in the field of uncertainty quantification and mechanical properties. In her business, Dr. Aldoumani is enhancing her consultancy expertise by providing services to customers worldwide. This includes finite element (FE) modelling and engineering solutions for newly designed products with the aid of uncertainty quantification and problem-solving. Dr. Aldoumani was a fellow researcher at Swansea University, Wales, with a structural engineering background. She is an expert in composite materials for structural applications, finite element (FE) modelling, and ANSYS, PDL, ACP, and MATLAB coding. Dr. Aldoumani is also a pioneer in uncertainty quantification in composite structures and adhesively bonded materials, particularly those employed in the aerospace industry. During her career, Dr. Aldoumani developed a novel approach that automates ANSYS through an in-house MATLAB code that is capable of running thousands of trials to obtain probabilistic Gaussian distributions. Her work is now published in internationally recognised and peer-reviewed journals.

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“…The BemLab2D software [44] is a graphic interface for manipulating two-dimensional models of boundary elements, allowing geometric information, boundary conditions and physical attributes to be managed in an efficient and userfriendly way. BemLab2D works both as a pre-processor when defining the geometric model of the problem, by associating physical attributes to the geometry and by generating the boundary elements mesh, and as a post-processor T when used to visualize the data provided by BemCracker2D, as deformed graphs, SIF's, number of cycles and crack propagation, among others.…”

Section: Bemlab2d Guimentioning

confidence: 99%

A new methodology to predict damage tolerance based on compliance via global-local analysis

Gomes

Oliveira

Neto

2021

Frattura Ed Integrità Strutturale

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Over the years several design philosophies to fatigue developed in order to combine structural safety and economy to manufacturing and operating aircraft process. The safe-life approach, which consists of designing and manufacturing a safe aeronautical structure throughout its useful life, results in factors that oversize the structural elements, preventing the possibility of failure and evidently leading to high design costs. On the other hand, the approach based on the damage tolerance concept, in which it is assumed that the structure, even whether damaged, is able to withstand the actions for which it was designed until the detection of a crack due to fatigue or other defects during its operation. Here, we propose a new methodology to the damage tolerance problem in which two-dimensional global-local analysis at different levels of external requests will be made by means of compliance, aimed at finding a relationship between fatigue life and the Paris constant. Moreover, the BemCracker2D program for simulating two-dimensional crack growth is used. This methodology has been proved to be an efficient and applied alternative in the damage tolerance analysis.

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An efficient GUI update for BEM-FEM mixed mesh generation

Cited by 3 publications

References 11 publications

A Probabilistic Approach in Fuselage Damage Analysis via Boundary Element Method

A Probabilistic Approach in Fuselage Damage Analysis via Boundary Element Method

Advances in Fatigue and Fracture Testing and Modelling

A new methodology to predict damage tolerance based on compliance via global-local analysis

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