This paper presents an outline of human-human interaction to establish a framework to understand how a behaviour based approach can be developed in the design of a human-robot interactive strategy. To approach the con...
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This paper proposes an idea to develop a tele-operated humanoid robot, which has capability to perform assigned task at a long distance based on the gestures given by the human. Tele-operation of robots is the field t...
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Aim of this research is the development and the calibration of a mathematical model for simulating the response of a large-scale uniaxial shaking table facility. The system to be modelled is composed of several intera...
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ISBN:
(纸本)9789609999427
Aim of this research is the development and the calibration of a mathematical model for simulating the response of a large-scale uniaxial shaking table facility. The system to be modelled is composed of several interacting components such as the shaking table, the specimen to be tested and the reaction mass. The latter could be isolated by air suspension springs and damped by heavy duly automotive shock absorbers or could rest directly on the supporting soil. The proposed model has been developed to take into account the stiffness and the damping due to suspension system/shock absorber system as well as the flexibility of the supporting soil. The main novelty of the proposed model is the nonlinear kinematics taken into account in the formulation of the equations of motion of the dynamic system. The rocking of the reaction mass is modelled and the nonlinear kinematics due to large rotations associated to an intended uniaxial motion of the shaking table is considered. The nonlinear equations of motions are derived using the Lagrangian approach under the assumption of large displacements and large rotations. The proposed mathematical model has been derived to be general and capable of predicting the response of any given uniaxial shaking table whose response could be strongly affected by the rocking of the reaction mass. The derived system of nonlinear equations of motion has been applied for modelling the response of an existing large-scale dynamic testing facility - the shaking table of the Eucentre Laboratory. The obtained results seem very promising, useful for understanding the causes of the complex behaviour of the dynamic testing facility and instrumental for helping in future experimental campaigns.
This paper presents a buck converter based modelling technique for Brushless DC (BLDC) motor drives. The proposed technique is a better alternative to model BLDC motor drives due to its reduced computational complexit...
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This book presents a collection of chapters describing the state of the art on computational modelling and fabrication in tissue engineering. Tissue engineering is a multidisciplinary field involving scientists from d...
ISBN:
(纸本)9789400736214
This book presents a collection of chapters describing the state of the art on computational modelling and fabrication in tissue engineering. Tissue engineering is a multidisciplinary field involving scientists from different fields. The development of mathematical methods is quite relevant to understand cell biology and human tissues as well to model, design and fabricate optimized and smart scaffolds. The chapter authors are the distinguished keynote speakers at the first Eccomas thematic conference on Tissue engineering where the emphasis was on mathematical and computational modeling for scaffold design and fabrication. This particular area of tissue engineering, whose goal is to obtain substitutes for hard tissues such as bone and cartilage, is growing in importance.
This study is about the investigation of the mechanical properties of open-cell, metal foam structures. The finite element simulations is used for analysis the foam behaviour. The foam structure is modelled using two ...
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ISBN:
(纸本)9783037856345
This study is about the investigation of the mechanical properties of open-cell, metal foam structures. The finite element simulations is used for analysis the foam behaviour. The foam structure is modelled using two regular cells. The Kelvin and the Weaire-Phelan cell mathematical model. A comparative study is discussed between these two models. The struts are modelled as a 3D finite element beam. The validation of this model when compared to the experimental results leads to a parametric analysis that shows the evolution of foam Young modulus according to some geometrical parameters of the cellular network structure, such as shape and dimensions of strands cross section, the strands inertia and their alignment and the structural network irregularities.
The increasing incidence of footbridges excessive vibration problems due to human walking induced loads led to an increase in the number of complaints arising from annoying human-induced vibrations in new footbridge s...
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ISBN:
(纸本)9789609999427
The increasing incidence of footbridges excessive vibration problems due to human walking induced loads led to an increase in the number of complaints arising from annoying human-induced vibrations in new footbridge structures. Based on the improvements in design methods, structural engineers seem to continuously move the safety border to increase slenderness and lightness of their footbridges using more slender structural designs. Considering all aspects mentioned before, this was the main motivation for the development of a finite element modelling of the dynamic behaviour of steel-concrete composite tubular footbridges, when subjected to human walking vibrations. The investigated structural system was based on a steel-concrete composite tubular footbridge spanning 82.5 m. The structural model consists of tubular steel sections and a concrete slab. This investigation is carried out based on correlations between the experimental results related to the footbridge dynamic response and those obtained with finite element modelling. The finite element model enabled a complete dynamic evaluation of the composite tubular footbridge in terms of human comfort and its associated vibration serviceability limit states. The peak accelerations found in the present analysis indicated that the investigated footbridge presented problems related with human comfort. Hence it was detected that this type of structure can reach high vibration levels that can compromise the footbridge user's comfort.
The work described in this paper concerns a part of the modelling of a standalone air solar collector producing low temperature heat. The main role of the system is to avoid freezing temperatures and to reduce humidit...
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This position paper provides a new insight into the smooth and precise adaptive railway transport braking system design. The first phase of the development is described and includes a development of a necessary mathem...
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ISBN:
(纸本)9789898565693
This position paper provides a new insight into the smooth and precise adaptive railway transport braking system design. The first phase of the development is described and includes a development of a necessary mathematical and computer model. Components of new adaptive braking system and their interactions are defined. mathematical model contains equations that describe the movement of the train and the pneumatics braking system of the train, as well as offering new features of the developed system, which will adaptively adjust the service brake modes and will perform real-time system diagnostics without any human interaction. The computer model and simulation results are described in this position paper.
A fundamental issue in crime prevention is the efficient deployment of resources and the effective targeting of interventions, both of which require some form of prediction of future crime. One crime for which this is...
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