Searched for: subject%3A%22ductility%22
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SONG, SIQISONG (author)
Low-speed roller bearings are generally in the sheave bearings and turret bearings which are used in the offshore industry under heavy loads. One of the challenges to the integrity of these bearings is the presence of subsurface cracking in the raceways. Downtime cost, which is caused by the failure of<br/>these bearings is significant. Based on...
master thesis 2021
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Strookman, Mark (author)
Non-linear finite element analysis (NLFEA) is a powerful numerical solution method that can enhance accurate determination of the structural resistance for a more efficient design. However, the implementation of NLFEA for the design of reinforced concrete structures is lagging behind as related uncertain- ties have not been quantified adequately...
master thesis 2021
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Wu, Jiandong (author), Guo, Liping (author)
Most of the waste glass, such as flat glass, glass bottle, is buried in the landfill, which is not desirable because it is not biodegradable and is not conducive to the long-term development of the environment. The glass powder (GP) with a certain fineness has excellent pozzolanic effect and can be used as a potential supplementary cementing...
conference paper 2021
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Xin, H. (author), Veljkovic, M. (author)
Predicting the ultimate capacity of components made of high strength steel (HSS) is a numerically challenging task. The fracture performance of HSS from different steel grades, producers, and manufacturing processes (rolling, cold forming, etc.) varies greatly. It is costly to conduct a series of experiments for each typical HSS structural...
journal article 2021
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Xin, Haohui (author), Veljkovic, M. (author), Correia, José A.F.O. (author), Berto, Filippo (author)
The ductile performance of high strength steel (HSS) from different steel grades, producers, manufacturing processes varies a lot. It is also difficult to conduct all kinds of reliable experiments to generate different stress status through different initial specimen geometries or by applying different load combinations in the civil...
journal article 2021
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Xin, Haohui (author), Correia, José A.F.O. (author), Veljkovic, M. (author), Berto, Filippo (author)
Accurately obtaining the material parameters of the damage model is very important for the ductile fracture simulation of steel structures made of high strength steel (HSS). The combination of micromechanics with the uncoupled phenomenological fracture model can be used to obtain the material parameters of ductile fracture locus only from the...
journal article 2021
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Mostofizadeh, S. (author)
Increase in computational power during recent years contributed to a significant development in numerical methods in mechanics. There are many methods developed that address various complex problems, yet modelling of initiation and propagation of failure in thin-walled structures requires further development. Among numerous challenges involved,...
doctoral thesis 2020
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Lavalette, N. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)
Tubular adhesive joints, used in truss structures to join pultruded carbon fibre-reinforced polymer members to aluminium nodes, are modelled with varying dimensions. The numerical model uses a Cohesive Zone Modelling formulation with a trapezoidal traction-separation law for the adhesive layer, and experimental tests are carried to validate...
journal article 2020
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de Putter, Arjen (author)
Application of Nonlinear Finite Element Analysis (NLFEA) is lagging behind the many digital advances in the structural engineering practice. This is due to the need for codes and standards. To help development of these codes and standards, 119 solution strategies were developed with different assumptions and choices for the concrete constitutive...
master thesis 2020
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Cao, Xiaoluo (author), Wu, Linmei (author), Li, Z. (author)
A computational model for studying the mechanical performance of steel-concrete columns under combined torsion is established via ABAQUS. The model is validated by experimental results. Through numerical simulations, the influence of the axial load ratio, torsion-bending ratio, concrete strength, steel ratio, longitudinal reinforcement ratio,...
journal article 2020
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Shakerifard, B. (author), Galan Lopez, J. (author), Kestens, L.A.I. (author)
The third generation of advanced high strength steels shows promising properties for automotive applications. The macroscopic mechanical response of this generation can be further improved by a better understanding of failure mechanisms on the microstructural level and micro-mechanical behavior under various loading conditions. In the current...
journal article 2020
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Fotouhi, Mohamad (author), Jalalvand, Meisam (author), Saeedifar, M. (author), Xiao, Bill (author), Wisnom, Michael R (author)
The aim of this work was to investigate the effect of loading angle variation on the pseudo-ductility of quasi-isotropic (QI) hybrid composite laminates. Previously, hybrids of thin-ply carbon fibres and standard glass fibres were found to have an excellent pseudo-ductile behaviour both in unidirectional (UD) and QI configurations when subjected...
journal article 2020
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Taumaturgo Mororo, L.A. (author), van der Meer, F.P. (author)
The Thick Level Set (TLS) method has been proposed as a new approach to the modeling of damage growth in solids. The fronts of damaged zones are implicitly represented as a level set of an auxiliary field whose evolution is accomplished by the level set method. The TLS model contains a characteristic length to obtain a non-local description...
journal article 2020
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Guo, Wenqi (author), Su, Jing (author), Lu, Wenjun (author), Liebscher, Christian H. (author), Kirchlechner, Christoph (author), Ikeda, Yuji (author), Körmann, F.H.W. (author), Liu, Xuan (author), Xue, Yunfei (author), Dehm, Gerhard (author)
In conventional metallic materials, strength and ductility are mutually exclusive, referred to as strength-ductility trade-off. Here, we demonstrate an approach to improve the strength and ductility simultaneously by introducing micro-banding and the accumulation of a high density of dislocations in single-phase high-entropy alloys (HEAs). We...
journal article 2020
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Chen, J. (author), Verberne, B. A. (author), Niemeijer, A. R. (author)
A (micro)physical understanding of the transition from frictional sliding to plastic or viscous flow has long been a challenge for earthquake cycle modeling. We have conducted ring-shear deformation experiments on layers of simulated calcite fault gouge under conditions close to the frictional-to-viscous transition previously established in...
journal article 2020
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Yang, F. (author), Veljkovic, M. (author), Liu, Yuqing (author)
Numerical analyses incorporating appropriate damage models provide an opportunity to predict the strength and deformation capacity of steel structures. This paper presents a practical calibration for the ductile damage model of S355 and high-strength steel S690Q, S700MC, S960Q based on tensile coupon test results. A combined linear and power...
journal article 2020
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Ben-Gera, Tal (author)
Compressive membrane action is a phenomenon commonly found in reinforced concrete structures after significant cracking and deformation have taken place. In this thesis report, the potential benefit of CMA in immersed tubes subjected to fires is quantified through a finite element study. Furthermore, sensitivity studies are conducted in order to...
master thesis 2019
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Zhang, Youyou (author), Liu, Yuqing (author), Xin, H. (author), He, Jun (author)
Steel-concrete composite high bridge pier has been applied increasingly in China and around the world. Most applied steel type in the composite piers are H-shaped steel and steel pipe, while seldom research or practice is associated with angle steel. This paper conducted parametric study on the composite column with equal-leg angle steel and...
journal article 2019
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li Piani, T. (author), Weerheijm, J. (author), Sluys, Lambertus J. (author)
A local damage model has been recently developed for the numerical simulation of the static behaviour of adobe bricks. Mesh insensitivity of the local model was obtained by generalizing the damage delay concept based on a Dirichlet boundary condition decomposition integrated in an implicit solver. The regularization properties of the model...
journal article 2019
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Simons, E.C. (author), Weerheijm, J. (author), Sluys, Lambertus J. (author)
Alumina ceramic is often used in armour systems. This material is known to have a brittle response under tensile loading, while a ductile response is found when sufficiently high pressures are reached. During projectile impact a ceramic material experiences both tensile loading and high pressures, hence fails in both a brittle and ductile way....
journal article 2019
Searched for: subject%3A%22ductility%22
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