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3 edition of Multi-objective shape and material optimization of composite structures including damping found in the catalog.

Multi-objective shape and material optimization of composite structures including damping

Multi-objective shape and material optimization of composite structures including damping

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  • 3 Currently reading

Published by NASA, For sale by the National Technical Information Service in [Washington, D.C.], [Springfield, Va .
Written in English

    Subjects:
  • Composite materials.,
  • Composite structures.,
  • Fiber composites.,
  • Micromechanics.,
  • Optimization.,
  • Structural design.,
  • Vibration damping.,
  • Weight reduction.

  • Edition Notes

    StatementD.A. Saravanos and C.C. Chamis ; prepared for the 31st Structures, Structural Dynamics, and Materials Conference cosponsored by the AIAA, ASME, ASCE, AHS, and ASC, Long Beach, California, April 2-4, 1990.
    SeriesNASA technical memorandum -- 102579.
    ContributionsChamis, C. C., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination17 p.
    Number of Pages17
    ID Numbers
    Open LibraryOL18251829M

      With the negative impact of conventional energy resources that have been used worldwide, there is a demand for using other resources such as wind energy. Tons of researches have been applied around the globe on the process of designing and manufacturing wind energy conversion systems. In the present chapter, we are concentrating on wind turbine blades’ structural design process.


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Multi-objective shape and material optimization of composite structures including damping Download PDF EPUB FB2

MULTI-OBJECTIVE SHAPE AND MATERIAL OPTIMIZATION OF COMPOSITE STRUCTURES INCLUDING DAMPING D.A. Saravanos* Case Western Reserve University Cleveland, Ohio and C.C. Chamis** National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio Abstract A multi-objective optimal design methodology is developed for light.

Multiobjective shape and material optimization of composite structures including damping. A real-coded genetic algorithm for optimizing the damping response of composite laminates.

Computers & Structures, Vol. Function-transformation methods for multi-objective optimization. Engineering Optimization, Vol. 37, No. 6 Cited by: Get this from a library. Multi-objective shape and material optimization of composite structures including damping.

[D A Saravanos; C C Chamis; United. A multi-objective optimal design methodology is developed for light-weight, low-cost composite structures of improved dynamic performance.

The design objectives include minimization of resonance amplitudes (or maximization of modal damping), weight, and material : D. Saravanos and C. Chamis. Multi-objective shape and material optimization of.

Studies performed on the optimization of composite structures by coworkers of the Institute of Polymers Mechanics of the Latvian Academy of Sciences in recent years are reviewed.

The possibility of controlling the geometry and anisotropy of laminar composite structures will make it possible to design articles that best satisfy the requirements established for them.

11th World Congress on Structural and Multidisciplinary Optimisation 07 th, JuneSydney Australia 1 Multi-objective Free-form Optimization for Shape and Thickness of Shell Structures with Composite Materials Kenichi Ikeya1, Masatoshi Shimoda2 1 Graduated School of Engineering, Toyota Technological Institute, Aichi, Japan, [email protected] As is shown in Fig.

1, the composite sandwich plate is composed of two fiber reinforced composite face-sheets (laminate) and a panel dimensions are L x and L y which are dimensions of a part of the composite panel that is located between the four stiffeners. The composite sandwich panel is subjected to out of plane lateral pressure load (e.g.

sides, front and aft superstructures). properties that vary in space. The realization of composite materials or { as a limit case { sca old structures with speci c properties has, of course, a huge impact for Mathematics Subject Classi cation. 49K20, 49Q10, 74Q Key words and phrases.

Composite materials, sca old structures, homogenization, shape optimization. In this context, the objective of this paper is to investigate the use of multi-objective optimization aiming at simultaneously maximizing the fundamental modal frequency and corresponding specific damping capacity of tow-steered composite laminates.

The optimization of structural topology permits the use of optimization algorithms at a very early stage of the design process. The method presented in this book has been developed by Martin Bendsoe in cooperation with other researchers and can be considered as one of the most effective approaches to the optimization of layout and material design.

Erik Lund and Jan Stegmann, Eigenfrequency and Buckling Optimization of Laminated Composite Shell Structures Using Discrete Material Optimization, IUTAM Symposium on Topological Design Optimization of Structures, Machines and Materials, /_15, (), ().

In [29] multi-objective structure dynamic optimization is studied. Optimization of composite structure is treated in [18, 22]. In [34] an optimization method is used to find the best "belleville. composite materials exist, the predominant usage is composite laminate where thin plies of various orientations are stacked together to form a shell structure.

In recent years, the authors have developed a Three-Phase optimization process for composite laminate design optimization [, 12]. INSTITUTE OF PHYSICS PUBLISHING SMART MATERIALS AND STRUCTURES Smart Mater.

Struct. 13 () – PII: S(04) Multi-objective optimization of an active constrained layer damping treatment for shape control of flexible beams L C Hau and E H K Fung1 Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom.

This paper presents a multiobjective optimization approach to minimize weight and maximize modal damping in laminated composite panels with Constrained Layer Damping.

Multi-objective optimization of acoustic sandwich panels. Multiobjective shape and material optimization of composite structures including damping. Fukunaga, H, Sekine, H. Optimum design of composite structures for shape, layer angle and layer thickness distributions.

Multi-objective shape and material optimization of composite structures including damping [microform] / An integrated methodology for optimizing structural composite damping [microform] / D.A. Saravanos and C Integrated analysis and design of thick composite structures for optimal passive damping characteristics.

Optimized design of composite structures requires simultaneous optimization of structural performance and manufacturing process. Such a challenge calls for a multi-objective optimization. Here, a generating multi-objective optimization method called normalized normal constraint method, which attains a set of optimal solutions and allows the designer to explore design alternatives before.

In the book, Professor Miravete demonstrates the optimisation of beams, plates and sandwich constructions in the designs of advanced composite materials. He also illustrates optimal material systems, fibre orientations and lay-up through functions of geometry, load type and boundary conditions.

The associates software, on two disks, will enable. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures.

Optimization of laminated composite structures: problems, solution procedures and applications Dr Michaël Bruyneel SAMTECH s.a., Liège Science Park Rue des Chasseurs-ardennais 8, Angleur, Belgium Abstract In this chapter the optimal design of laminated composite structures is considered.

A review of the literature is proposed. Laminated composite materials are extensively used in aerospace, defense, marine, automobile, and many other industries.

They are generally lighter and stiffer than other structural materials. A laminated composite material consists of several layers of a composite mixture consisting of matrix and fibers. In the thin-walled plate surface of the additional damping material damping composite structure can be improved to improve the plate structure radiated noise level, and because of The performance of viscoelastic damping materials including physical and mechanical properties and Ⅲ Topology optimization of body floor damping materials.

In this investigation, a systematic surrogate-based optimization design framework for a battery pack is presented. An air-cooling battery pack equipped on electric vehicles is first designed. Finite element analysis (FEA) results of the baseline design show that global maximum stresses under x-axis and y-axis transient acceleration shock condition are both above the tensile limit of material.

The final objective is that composite materials and structures can be designed and optimized in silico, before they are actually manufactured, leading to the implementation of a right-first-time approach to composite manufacturing.

A total of 55 studies that applied multi-objective optimization methods in the construction industry are reviewed in this chapter. To avoid overlapping and redundancy of reviews with Evins’ work [], the review in this chapter includes only the recent studies which were published in the period late to early Evins [] covered the period of to late and conducted a.

Rapidly varying material and geometrical characteristics of composite materials and structures do not allow the direct study of their mechanical behavior even with the use of modern computers. This book is devoted to the mechanical design and optimization problems of composite structures, based on the previously developed asymptotic.

Ship Materials Engineering Department Research and Development Report Vibration Damping Response of Composite Materials by Roger M. Crane 0E DTIC 0 • ELECTE 16 -4S MAY 0 E 5; Approved for public release; distribution Is unlimited.

91 24 “ Multi-objective optimization of curvilinear fiber shapes for laminated composite plates by using NSGA-II,” Compos. Part B Eng. 45 (1), – Crossref, ISI, Google Scholar. ** Free Book Smart Composites Mechanics And Design Composite Materials ** Uploaded By Danielle Steel, smart composites mechanics and design is an essential text for those interested in materials that not only possess the classical properties of stiffness and strength but also act as actuators under a variety of external stimuli provide.

ADINA Structures provides state-of-the-art stress capabilities for the analysis of solids and structures. The analysis can be linear or highly nonlinear, static or dynamic, and may include geometric nonlinearities, large deformations, severe material nonlinearities.

Composite materials are known to be used in many fields of study. The aerospace (Altair Engineering, Inc., ), mechanical (Biswal, Deepak, & Bahubalendruni, ), and civil engineering (Bank, Gentry, Thompson, & Russell, ) industries are utilizing the improved material properties that laminated composite materials yield for a wide.

Multi-objective optimization has been performed to address the conflicting design criteria for ABHs. The frequency of good performance of the ABH for vibration reduction as well as the requirement to maintain adequate smoothness were simultaneously reduced and the Pareto optimality curve was estimated using an evolutionary search framework.

“Artificial immune system for multi-objective design optimization of composite structures.” Engineering Applications of Artificial Intellige no. 8 (): – Murugan, M.S., S. Suresh, R. Ganguli, and V. Mani. “Target vector optimization of composite box beam using real-coded genetic algorithm: a decomposition approach.”.

An integrated structures/controls optimization is developed for vibration suppression of a composite box beam with surface bonded piezoelectric actuators. The penalty approach is used to perform the multi-objective hybrid optimization to enhance damping of the first lag, flap, and torsion modes while minimizing control input.

Smart Materials and Structures, Vol. 13,p. Grgoire Lepoittevin, Gerald Kress Optimization of segmented constrained layer damping with mathematical programming using strain energy analysis and modal data. Materials and Design, Vol. 31,p. The paper presents the optimization of stacking sequence (the lamination angles in subsequent composite layers) of the composite cylinder in order to simultaneously maximize the values of the first natural frequency f1 and the first buckling force Pcr.

The optimization problem involves either two objective functions or one which combines both problems using a coefficient whose optimal value is. Composite structures are prone to impact and fatigue loads in service which in turn causes defects such as de-lamination.

This affects the dynamic characteristics of the composite laminates such as its Natural frequency, Mode shapes and its damping characteristics. Hence it can be used as a prominent indicator for structural health monitoring. methodology will include optimization related subjects such as objective function, constraints and also so-called manufacturing constraints for both the topology and shape optimization parts.

Furthermore, load cases and boundary conditions which are relevant to include with respect to the optimization process are treated. Limitations. smart composites mechanics and design composite materials Posted By Anne Rice Media Publishing TEXT ID f57bc3af Online PDF Ebook Epub Library themes of the fundamentals of material science and engineering and applies them in an engineering context the objective of this course is to develop a solid understanding.Computational simulation of damping in composite structures A computational methodology is developed for the prediction of passive damping in composite structures.

The method involves multiple levels of damping modeling by integrating micromechanics, laminate, and structural damping theories.Bhattacharya B., Ahalwat S. and Vidyashankar B. R. (): Closed Form Studies of a New Hybrid Damping Technique Using Active Magnetostrictive Composite and Hard Coated Damping Alloys.

Smart Materials and Structures, Volpp.