A5062720222- Seismic Performance and Analysis
- Tribology and Wear Analysis
- Adhesion, Friction, and Surface Interactions
- Structural Health Monitoring Techniques
- Tribology and Lubrication Engineering
- Gear and Bearing Dynamics Analysis
- Risk and Safety Analysis
- Vibration and Dynamic Analysis
- Dynamics and Control of Mechanical Systems
- Polymer Science and Applications
- Structural Response to Dynamic Loads
- Vibration Control and Rheological Fluids
- Fluid Dynamics Simulations and Interactions
- Mechanical stress and fatigue analysis
- Material Properties and Applications
- Masonry and Concrete Structural Analysis
- Structural Behavior of Reinforced Concrete
- Brake Systems and Friction Analysis
- Sports Dynamics and Biomechanics
- Lubricants and Their Additives
- Structural Engineering and Vibration Analysis
- Geophysics and Sensor Technology
- Advancements in Materials Engineering
- Concrete Corrosion and Durability
- earthquake and tectonic studies
European Centre for Training and Research in Earthquake Engineering
2019-2023
Politecnico di Milano
2008-2019
Instituto Politécnico Nacional
2015
This article proposes a numerical investigation of the frictional heating developed in sliding bearings under high velocities and influence relevant temperature rise on mechanical characteristics device. A three-dimensional finite element model bearing is created heat generation modelled through thermal source inserted at surface bearing, with intensity dependent coefficient friction, contact pressure velocity. The friction value adjusted step-by-step velocity used to update flux resisting...
Abstract An adequate seismic protection of steel storage tanks industrial, chemical and petrochemical plants is essential since potential consequences failures, besides the economic losses, can be catastrophic for environment people living nearby. Among most common damages suffered by in recent earthquakes, there are elephant‐foot‐buckling perimeter wall tanks’ uplift or overturning. Due to uncertainties related estimation mechanical properties filled loads (i.e. dynamic overpressures...
Nonstructural elements (NEs) are generally defined as typically housed within buildings/facilities that not part of the structural system. often classified architectural elements, mechanical/electrical/hydraulic systems, and building contents. associated with critical seismic risk, due to their high vulnerability exposure actions, especially for facilities such hospitals nuclear plant facilities. Accordingly, combination major makes NEs extremely in terms risk even low moderate seismicity....
The re-centring capability is recognized as a fundamental function of the isolation system, because it intended to prevent substantial permanent deformation at end earthquake that may affect serviceability structure and eventually limit isolators withstand aftershocks future earthquakes. In this study, behaviour systems composed sliding bearings with curved surfaces investigated in shake-table tests carried out on one-storey steel frame rectangular plan, scaled one third-length scale...
Friction plots of polymers sliding on smooth metal surfaces are generally characterized by two regions distinct dependency the normal load, with low sensitivity at stress levels followed a sharp change in rate decrease friction increasing pressure above plastic flow limit polymer. A simplified model is proposed to describe this behavior which accounts for effect load growth real contact area and shear interface between polymer mating surface. The has wide generality when expressed terms...
The re-centring capability is recognized as a fundamental function of any effective isolation system, not only because it associated to small or negligible deformation at the end earthquake but rather prevents displacement build up that may limit structure withstand aftershocks and future earthquakes. current Eurocode recommends estimate maximum total isolated system superposition nonseismic offset resulting from permanent actions, long-term deformations thermal movements structure,...
Sliding bearings have been extensively used to implement base isolation design in civil engineering works. Testing of isolators is conducted for characterizing the properties be structural analysis, as well verifying performance devices before their application. The quantification effects scaling specimens and testing on observed coefficient friction an issue, due nonlinear dependence several factors like load, velocity temperature. An effort quantify such pursued study. parameterized a...
High damping rubber (HDR) is used in the manufacturing of elastomeric bearings for seismic isolation building and structures. In practical situations, are subjected to a permanent vertical load which may change at occurrence earthquake, concurrent shear deformation, due either service movements structure or earthquake-induced ground motion. The study presents an experimental procedure assessment HDR specimens under combined compression shear, reproducing same typical regimes isolators...
Monitoring of non-structural elements is not usually implemented, despite the seismic vulnerability these components and significant cost associated with their replacement in case damage. By exploiting limited commercial sensors, accelerometers were installed an existing building to compare accelerations applied earthquake critical acceleration thresholds. The exceedance thresholds would indicate a possible danger for occupants need more detailed inspection element, guiding prioritisation...
Starting from considerations on the high seismic vulnerability of nonstructural elements, and at same time scarce consideration their performance different stages design assessment process, this paper proposes a very simple ready-to-use classification scheme for elements. The proposed approach is based limited set information, which may take advantage availability numerical model building its results, although it also rely code formulations evaluations literature. classes are assigned to...
In the recent years, radiation-induced highly crosslinked polyethylenes have been introduced in arthroplasties as an alternative to conventional ultra high molecular weight polyethylene (UHMWPE) for their superior wear resistance. present study, influence of raw on end-user properties (HXLPE) is investigated by means a comparative study between two resins with distinct weights. The main outcomes indicate that differences mechanical and row materials disappear after crosslinking; nevertheless...