Showing papers on "Design tool published in 2022"

Nonlinear Finite-Element Modeling of HF2V Lead Extrusion Damping Devices: Generic Design Tool

Abstract: Supplemental energy-dissipation devices are increasingly used to protect structures, limiting loads transferred to structures and absorbing significant response energy without sacrificial s...

Influence of the operating regimes of MOS transistors on the sizing and optimization of CMOS analog integrated Circuits

Abstract: During the past few years the multi-objective metaheuristics have become the most skilled and fruitful algorithms that have gained a lot of popularity of analog designers. These algorithms have been implemented into an optimization-based design tool that can be used to size difficult and complex analog circuits. The optimization-based approach can be categorized into simulation-based, equation-based, or neural-network-based device sizing. In this paper, the simulation-based approach is used to generate the non-dominated set of points of the Pareto fronts. A particular interest is accorded to the multi-objective particle swarm optimization (MOPSO) algorithm as a priori the most adequate metaheuristic to apply in the field of analog circuit sizing. The performances of MOPSO compared to the non-dominated sorting genetic algorithm (NSGA-II) are evaluated for four analog circuits at different operating regimes of transistors such as weak inversion, linear and saturation region. Performance tests of the proposed method are conducted on these circuits in 0.18 μm CMOS technology. The results show that the proposed method can be useful for the optimal design of integrated circuits, to meet the challenge of automated design in the microelectronics domain.

A Panelization Design Tool to Inform Decisions About Façade Geometry and Environmental Performances

Abstract: The energy upgrade of existing buildings is crucial to achieve the decarbonization goals of 2050. While the current facade retrofit technologies are effective and well-tested, they present shortcomings in terms of installation time, disruption to users, etc. A paradigm shift is required to overcome these barriers and increase the renovation rate. Modern Methods of Construction (MMC) employing off-site elements offer a promising alternative; however, since practical knowledge about their selection and application is limited, they are still rarely adopted by designers. The objective of this paper is to propose a Panelization Design Tool, able to automate part of the design process in the early stages, to support designers and decision-makers in the choice of specific technologies for retrofitting facades with off-site fabricated panels. The tool provides information about the performances of each technology according to the Building Information Modeling (BIM) n-dimensions. In particular, this paper shows the potential of the tool to solve geometry and energy-related aspects with dedicated indicators.

Greenbuild: An Analytical Tool to Support Decision Making in Green Building Design

Abstract: Buildings are one of the largest contributors to negative environmental impacts because of the high consumption of energy and materials during their life cycle. The present work proposes a framework, able to make available information, both of general materials and specific commercial solutions; moreover, it overcomes the current state of the art, since, although focused on environmental sustainability, provides the opportunity to compare simultaneously several choices, also considering their properties and characteristics. Based on the proposed methodology, a tool structure and workflow are presented. The main potentiality is represented by the possibility of executing sustainability assessment already in the early stages of building design using the proposed tool when design choices significantly contribute to the global environmental impact of solutions. A validation procedure to quantitatively evaluate the main tool's limits and potentialities is proposed.

Towards the development of an advanced wind turbine rotor design tool integrating full CFD and FEM

Abstract: Large, highly flexible wind turbines of the new generation will make designers face un-precedent challenges, mainly connected to their huge dimensions. To tackle these challenges, it is commonly acknowledged that design tools must evolve in the direction of both improving their accuracy and turning into holistic, multiphysics tools. Furthermore, the wind turbine industry is reaching a high level of maturity, and ever more accurate and reliable design tools are required to further optimise these machines. Within this framework, the study shows the development of an integrated platform for blade design integrating 3D CFD flow simulations and 3D-FEM structural analysis. Artificial intelligence techniques are applied to develop an optimization procedure based on the proposed tool. The potential of the new platform has been tested on the well-known test case of the MEXICO rotor, for which an optimization of the blade design has been carried out. Exploring a design space sampled with 2000 CFD and FEM computations, increases in blade torque have been obtained at each of the three tip-speed ratios (TSR) investigated, ranging from 6% at the nominal TSR to 14% at the lowest one, while stresses on the blade are kept almost unaltered.

Method for rapid, high-fidelity prediction of power output on partially shaded solar arrays

Abstract: An intuitive graphic design tool was developed for rapid design of space vehicle PV arrays. This design tool was coupled via an automated workflow to high-fidelity solar raytracing calculations for the purpose of providing detailed PV array power prediction as a function of orbital parameters, vehicle and array geometry, and solar cell circuiting and layout. It was demonstrated that PV array power can be significantly impacted by string layout design choices, and that these candidate layouts can be rapidly evaluated using the proposed methods which enables rapid design iteration, total power prediction, and overall system optimization

Wind Load Analysis on Different Configuration on Stadium Light Pole

Abstract: Abstract: In this work, a comprehensive study is made in a dynamic manner to understand the effect of this corrosive induced structural failure of a monopile flood light tower. Various climatic conditions subjected to rural and urban environments are considered to understand the source of failure and these results are effectively utilized to optimize the design of these structures to increase their fatigue life in turn reduces the possibility of catastrophic failures. Computational fluid dynamics (CFD) and Finite element analysis (FEA) play a vital role in conceptual design and design for development in industries and research where pure mathematical and experimental approaches are next to impossible. Thanks to these technologies many insights are revealed during the design evolution of a product that helps in optimum design of a product. This work utilizes the surface chemical reaction capability that is available in Ansys Fluent to conduct a detailed aerodynamic study for various wind conditions and to locate the place of maximum corrosion and these inferences are in turn will be utilized in further FEA analysis to predict the structural failures.Finally these interpretations are applied in reaching an optimum monopile structure with design retro-fittings and design alterations that enhance the applicability of these structures. Keywords: Monopile light tower, CFD ( Computational Fluid Dynamics), FEA (Finite Element Analysis), fatigue life