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Assessing the structural behavior of shear-critical prestressed concrete beams using finite element analysis and digital image correlation KU Leuven
The reported study firstly presents the results of an extensive experimental program consisting of 9 full-scale I-shaped prestressed concrete beams. Each specimen is subjected to a four-point bending test with monotonically increasing load until failure occurs. The investigated parameters are the amount of prestressing, the amount of longitudinal and shear reinforcement and the shear spanto- effective depth ratio respectively. Continuous ...
Prediction of creep behaviour of geogrid reinforced fill structure using numerical analysis : a finite element method Universiteit Gent
Various types of geosynthetics are utilized in conjunction with concrete panels, gabions encased in steel wire mesh, or as a wrap-up solution to stabilize steep slopes. Geogrids have become a prevalent choice for stabilization and reinforcement in the environmental and civil sectors. However, due to their characteristics, they are susceptible to experiencing increased displacements in the long term as a result of creep deformations due to ageing ...
A comparison of structural hot-spot stress methods using different finite element techniques Universiteit Gent
In this paper, different methods have been used for the evaluation of structural hot-spot stress (SHSS) near rib-to-deck (RD) welded joint in orthotropic steel deck (OSD). The SHSS at this critical joint is calculated by means of finite element analyses (FEA) based software Siemens NX.12. Different meshing techniques and element sizes have been used for the determination of SHSS. Also, the effect of nodal averaging feature is studied on each ...
Mesoscale finite element analysis of cracked composite laminates under out-of-plane loads using 3D periodic boundary conditions Universiteit Gent
The behavior of composite materials under out-of-plane loads is strongly affected by the presence of transverse ply cracks. The cracks perturb the distribution of stresses leading to large out-of-plane shear stiffness reductions. It is crucial to include these effects in the damage material models to improve their accuracy. Therefore, the stress transfer and stiffness reduction in cracked laminates have been studied with a mesoscale finite ...
Sound transmission analysis using the hybrid finite element - wave based approach for coupled vibroacoustic problems KU Leuven
In this paper, a hybrid structural finite element (FE) - acoustic wave based (WB) approach is formulated to avoid using extra acoustic FE in the case of a simple structural geometry but with complicated structural material properties. Following the formulation, the approach is implemented and validated. First, linear hexahedral solid elements with a selective reduced integration are implemented in an in-house code and are checked to be able to ...
Biomechanical comparison of locking and non-locking patient-specific mandibular reconstruction plate using finite element analysis KU Leuven
Patient-specific mandibular reconstruction plate (PSMRP), as one of the patient-specific implants (PSIs), offers a host of benefits to mandibular reconstruction. Due to the limitation of fabricating screw hole threads in the PSMRP, 3D printed PSMRP is applied to the non-locking system directly in the mandibular reconstruction with bone graft regardless of the locking system. Since the conventional manual-bending reconstruction plate (CMBRP) ...
Updating Finite Element Model of a Wind Turbine Blade Section Using Experimental Modal Analysis Results KU Leuven
© 2014 Marcin Luczak et al. This paper presents selected results and aspects of the multidisciplinary and interdisciplinary research oriented for the experimental and numerical study of the structural dynamics of a bend-twist coupled full scale section of a wind turbine blade structure. The main goal of the conducted research is to validate finite element model of the modified wind turbine blade section mounted in the flexible support structure ...
Finite element analysis of wind turbine blades subjected to torsional loads : shell vs solid elements Universiteit Gent
In this work the modelling of wind turbine blades subjected to torsional loads is explored. Usually, wind turbine blades are modelled using Outer Mold Layer (OML) shell models, whose mid-surface does not coincide with the nodal plane, and have been shown not to capture their behaviour correctly in torsional loadings, highly underestimating the torsional stiffness of the blade. To better understand the differences between using OML shell models ...
The correlation between the SOS in trabecular and stiffness and density studied by finite element analysis KU Leuven
For the clinical assessment of osteoporosis (i.e., a degenerative bone disease associated with increased fracture risk), ultrasound has been proposed as an alternative or supplement to the dual-energy X-ray absorptiometry (DEXA) technique. However, the interaction of ultrasound waves with (trabecular) bone remains relatively poorly understood. The present study aimed to improve this understanding by simulating ultrasound wave propagation in 15 ...