7 documents found, page 1 of 1
On the evaluation of strain energy release rate of cement-bone bonded joints un...
Campos, Teresa Daniela Azevedo; Barbosa, M. L. S.; Martins, M.; Pereira, F. A. M.; de Moura, M .F .S. F.; Quyen, Nguyen-Trong; Zille, AndreaBone cements based on poly(methylmethacrylate) (PMMA) are primarily used in joint replacement surgeries. In the fixation of joint replacement, the self-curing cement fills constitutes a very important interface. To understand and improve the interaction between cortical bone and bone cement it is essential to characterize the mechanical properties of cement-bone bonded joints in full detail. In this study, the ...
Structural assessment based on vibration measurement test combined with an arti...
Minh, Tran Quang; Sousa, Hélder S.; Ngo, Thuc V.; Nguyen, Binh D.; Quyen, Nguyen-Trong; Nguyen, Huan X.; Corredor, Edward Alexis Baron; Matos, José C.Damage assessment is one of the most crucial issues for bridge engineers during the operational and maintenance phase, especially for existing steel bridges. Among several methodologies, the vibration measurement test is a typical approach, in which the natural frequency variation of the structure is monitored to detect the existence of damage. However, locating and quantifying the damage is still a big challen...
Finite element model updating for composite plate structures using particle swa...
Minh, Tran Quang; Sousa, Hélder S.; Matos, José C.; Fernandes, Sérgio Carlos Dias; Quyen, Nguyen-Trong; Son, Dang NgocIn the Architecture, Engineering, and Construction (AEC) industry, particularly civil engineering, the Finite Element Method (FEM) is a widely applied method for computational designs. In this regard, computational simulation has increasingly become challenging due to uncertain parameters, significantly affecting structural analysis and evaluation results, especially for composite and complex structures. Theref...
Osteosynthesis metal plate system for bone fixation using bicortical screws: nu...
Olmos, Andrea Alexandra Rodrigues; Fertuzinhos, Aureliano Costa; Campos, Teresa Daniela Azevedo; Dias, R. Isabel; Viegas, A. Carlos; Pereira, F. A. M.This study reports the numerical and experimental characterization of a standard immobilization system currently being used to treat simple oblique bone fractures of femoral diaphyses. The procedure focuses on the assessment of the mechanical behavior of a bone stabilized with a dynamic compression plate (DCP) in a neutralization function, associated to a lag screw, fastened with surgical screws. The non-linear...
An alpha finite element method for linear static and buckling analysis of texti...
Quyen, Nguyen-Trong; Quoc, Nguyen Trong; Tru, Nguyen Dinh; Gomes, Abel J. P.; Ferreira, FernandoA four node isoparametric shell element (Q4) based on Mindlin/Reissner plate theory and the alpha finite element method (αFEM) was formulated for obtaining a nearly exact solution of linear static and buckling analysis of textile-like sheet material. The novel idea of αFEM-Q4 is assumed to be similar to the framework of conventional finite element approaches for Q4, but the gradient of strains is scaled by a fa...
A node-based strain smoothing technique for free vibration analysis of textile-...
Quyen, Nguyen-Trong; Quoc, Nguyen Trong; Tru, Nguyen Dinh; Gomes, Abel J. P.; Ferreira, FernandoThis paper presents an implementation of the node-based smoothed finite element method and Reissner-Mindlin plate theory for a four node isoparametric shell element to improve the numerical precision and computational efficiency subjected to free vibration analysis of textile-like sheet materials. A one smoothing cell integration scheme in the strain smoothing technique is implemented to contrast the shear lock...
Macro-mechanical modelling and simulation of textile fabric and clothing with S...
Quyen, Nguyen-TrongEsta tese propõe um método de elementos finitos, designado por S-FEM (Smoothed Finite Element Method), para modelação e análise mecânica de estruturas têxteis planas. Neste enquadramento teórico, supõe-se que a estrutura têxtil não-tecida é um material isotrópico elástico, enquanto a estrutura têxtil tecida é um material elástico com anisotropia ortotrópica, para os quais as leis constitutivas utilizam propried...