Fluid-dynamic design optimization of hydraulic proportional directional valves
This article proposes an effective methodology for the ﬂuid-dynamic design optimization of the sliding spool of a hydraulic proportional directional valve: the goal is the minimization of the ﬂow force at a prescribed ﬂow rate, so as to reduce the required opening force while keeping the operation features unchanged. A full three-dimensional model of the ﬂow ﬁeld within the valve is employed to accurately predict the ﬂow force acting on the spool.
Towards Zero Energy Industrial Halls- Simulation and Optimization with Integrated Design Approach
Net-zero energy building (NZEB) is thought to be the building of choice, but in practice, is also synonym to high investment cost. It is, therefore, very important to investigate if the amount of the additional capital investment could be recouped from the energy saving (or generation).
Finite element reconstruction of real world aortic injury in near-side lateral automotive crashes with conceptual countermeasures
Traumatic rupture of the aorta (TRA) remains the second most common cause of death associated with motor vehicle crashes after brain injury. On an average, nearly 8,000 people die annually in the United States due to blunt injury to the aorta. It is observed that more than 80% of occupants who suffer an aortic injury die at the scene due to exsanguination into the chest. With the advent of more accurate and established human body finite element (FE) models, FE crash reconstruction methods may become a valuable tool when assessing crash scenarios and occupant injury mechanisms. The current study is divided into five main aims, near side left lateral real world finite element reconstructions, sensitivity study, thresholds for TRA, aorta mechanics in racing crashes and conceptual countermeasures. In the first study eight nearside left lateral impacts, in which a TRA occurred, were reconstructed using a combination of real world crash data reported in the Crash Injury Research and Engineering.
Vehicle Aerodynamic Shape Optimization
Recent advances in morphing, simulation, and optimization technologies have enabled analytically driven aerodynamic shape optimization to become a reality. This paper will discuss the integration of these technologies into a single process which enables the aerodynamicist to optimize vehicle shape as well as gain a much deeper understanding of the design space around a given exterior theme.
Designing Materials with modeFRONTIER - An application of modeFRONTIER to the optimization of physical and chemical properties of polymers
The following presentation proposes an application of modeFRONTIER to the optimization of physical and chemical properties of polymers
Collaborative Multidisciplinary Design Optimization-a framework Applied on Aircraft Systems and Industrial Robots
In a product development process, it is crucial to understand and evaluate multiple and synergic aspects of systems such as performance, cost, reliability and safety. In order to improve the foundations for decision-making, this thesis presents methods that are intended to increase the engineering knowledge in the early design phases.
Metodologia de Analise de Implante Bioreabsorvivel Aplicado em Coluna Lombar Utilizando Modelagem por Elementos Finitos e Curva de Degradacao
Bioresorbable materials, consisting mainly of polymers, have as main components, lactic acid and bioengineering studies, which is the bioresorption process, i.e., the braking of polymer by hydrolysis into lactic acid and glycolic acid. These monomers are eliminated through body natural cycle called Krebs cycle.
Light beam reﬂectance measurement of droplets diameter distribution in crude oil emulsions
Stable oil ﬁeld emulsions create challenging conditions in the petroleum production industry. One important characteristic affecting the stability and rheology of emulsions is the Droplet Diameter Distribution
(DDD). A few techniques are available to determine the DDD in clear and dark liquid/liquid mixtures. Most of them, like the traditional light scattering techniques, require sampling and dilution.
Using the Fast Multi-Objective Genetic Algorithm to Improve the Urban Flood Modeling
In the present paper, a multi objective optimization approach based in Genetic Algorithm, Design Of Experiments and Response Surface Method strategies, is applied in order to predict the optimal CFD model parameters,
Multidisciplinary Code Coupling for Analysis and Optimization of Aeroelastic Systems
This paper presents a practical methodology for static aeroelastic analysis and aeroelastic optimization via coupling of high-ﬁdelity commercial codes.