D. Hu, F. Zhang, H. Zhou, and J. Shao
LML, UMR8107, CNRS, University of Lille I, Lille, France
School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan, China
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
A lixiviation-mechanical coupled model is developed for fiber reinforced concrete within this framework; both the influence of chemical degradation on short and long term mechanical behavior and the influence of mechanical loading on the diffusion coefficient can be considered. The elastic mechanical properties are written as function of chemical damage. A Drucker–Prager typed criterion with ...
G. Maizza, and R. Cagliero
Politecnico di Torino
Dipartimento di Scienza dei Materiali ed Ingegneria Chimica
In this work the influence of the geometry of the Vickers indenter tip on relevant indentation properties is investigated during instrumented indentation operated in the macro range (i.e. with forces ranging from 2 to 200 N) and carried out in the case of a homogenized (i.e. heat treated) TiAl alloy. The instrumented macro-indentation test is simulated by Comsol Multiphysics using a full 3D ...
Y.F. Wang, Y.S. Wang, L. Wang
Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, China
Department of Mechanical Engineering, Østfold University College, Halden, Norway
We show in this paper that by careful design of the geometry of the resonators, complete bandgap with relatively low center frequency can be obtained for 2D and 3D Phononic Crystals with resonators. The generation of the bandgap is due to the local resonance of the unit cell. Spring-mass and spring-pendulum models are developed to predict the boundaries of the complete bandgap. The predicted ...
Interdisciplinary Nanoscience Center (iNANO) Aarhus University, The Faculty of Science, Ny Munkegade, Aarhus C, Denmark.
The analysis of the mechanical properties of bi-continuous structures has been problematic due to the complex geometry that describes these materials. In this study a method which identifies and quantifies the geometrical elements within the structure will be presented. A sample is in-situ compressed and its deformation is compared with the results of a FEMLAB finite element model. Initially, ...
A.T. Vermeltfoort, and J. van Schijndel
Eindhoven University of Technology, the Netherlands
The tensile strength of masonry is relatively low compared to its compressive strength and is affected by the direction of the joints and their filling. In masonry with modern thin layer mortar (joint thickness 3 to 5 mm) sometimes the head joints are left open. A total of 13 model-walls was built and for each model four general purpose mortar combinations and three thin layer mortar combinations ...
G. Maizza, R. Cagliero, and A. Santoro
Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Torino, Italy
Powder metallurgy is a key technology for manufacturing advanced components based on TiAl alloys. Cold compaction is the primary step to produce green parts. Cold deformation of TiAl powder is difficult due to its typical poor ductility. Plastic deformation and cracking susceptibility of TiAl powder strongly depends on micro-mechanical phenomena. To manage real compaction problems more reliable ...
SSM Engineering, Stenungsund, Sweden
An eigenvalue as well as a harmonic response analysis is performed on the Gullfaks C, Knock Out Drum (KOD) including some of the connecting pipe systems. The vibration behavior of two new choke valves and their specific connection to the KOD are of special interest. The main concern is the low frequency induced vibration as a consequence of the platform movements. A frequency band between 0-20 Hz ...
O. Toscanelli, and V. Colla
Scuola Superiore S. Anna, Pisa, Italy
The contact between infinitely rigid body and deformable part is studied using the velocity as a dependent variable. A simple forging case is evaluated. The velocity approach is realized by means of using COMSOL with the Equation-Based Modeling. The contact model evaluated in this work is suitable to model the forging process. For a given mesh and element it is possible to choose the optimum ...
L. Martinelli, A. Spiandorello, P. Ruol, and A. Lamberti
DICAM, Università di Bologna, Italy
Civil Engineer, Italy
IMAGE, Università di Padova, Italy
This paper will present a numerical model based on COMSOL Multiphysics suited to simulate the dynamic response of a catenary mooring (or a submarine cable). In general, mooring lines are subject to a direct wave load (e.g. drag, inertia) in addition to the movement of the vessel to which they are linked. Tests were carried out at the wave flume of the Maritime Laboratory of IMAGE Department, ...
S. Newbauer, D. Cook, and D. Pettis
Milwaukee School of Engineering
Designing a component with multiple functions, e.g. load bearing and noise attenuation, can increase the effectiveness of each component and reduce the complexity of the overall system, thereby improving system efficiency as well. Current multifunctional components include metal foam. It is posited that the cellular pores of the metal foam can be engineered and optimized for desired ...