1–50 of 78 hits
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    Dynamic Characterization of Car Door and Hood Panels Using FEA and EMA

    Hanouf, Zahir / Faris, Waleed F. / Nor, Mohd Jailani Mohd | Tema Archive | 2013
    vehicles. This paper investigates the dynamic properties of two parts of the vehicle structure which are door and hood panels. Theoretical modal ...
    Keywords: Strukturdynamik

    Innovative Systems for Seismic Protection of Precast Industrial Buildings

    Valente, Marco | Tema Archive | 2013
    enhanced the stiffness of the structure, causing only small reductions of column rotations and top displacements. In case of severe seismic actions ...
    Keywords: nichtlineare Dynamik

    Performance Research on Tension Leg Platform of Floating Offshore Wind Turbine

    Gao, Yue-Wen / Li, Chun / Cheng, Xin | Tema Archive | 2013
    with multi-body dynamics, analyzing motion response and wave force mechanism to the platform structure, and obtained the dynamic response and ...

    Research on foundation response of a tri-floater offshore wind turbine

    Gao, Y.W. / Li, C. / Cheng, X. | Tema Archive | 2013
    with multi-body dynamics, we analyzed motion response and wave force mechanism to the platform structure, and obtained the dynamic response and ...

    Dynamic Response Analysis of Jacket Wharf Structure under Wave

    Zhang, Yuan / Chen, Ting-Guo | Tema Archive | 2012
    consideration of the structure dynamic responses and the pile foundation pull-out resistance, three types of pile foundation were adopted, which are the ...
    Keywords: Strukturdynamik

    Estimation of Dynamic Wind Pressure for Multi-Span Greenhouse Structural Design

    Sun, De-Fa | Tema Archive | 2012
    and estimation of dynamic wind pressures for multi-span greenhouse structural design in details. Meanwhile, taking advantage of past ...
    Keywords: Dynamik , building structure

    Structural Design for Dynamic Roller Device in Transporting Unit of Biomass Pyrolytic System

    Wu, Jun-Hui / Zhou, Quan / Chen, Jie et al. | Tema Archive | 2012
    frame of the roller was used widely currently. The modeling and structural optimization of the frames in reasonable scale were designed with ...
    Keywords: Dynamik

    Structural Analysis for the Blades of a Small Horizontal-Axis Wind Turbine

    Wang, Sheng-Huan / Huang, Kuo-Yi / Tsai, Gwo-Chung | Tema Archive | 2012
    CFD is loaded on the structure, and the structural deformation and stress distribution are calculated using CSM. The physical model in the ...
    Keywords: structural deformation

    Analysis of Damping Performance for Cabin Deck Covered with Floating Floor Coverings

    Liang, Bing-Nan / Yu, Hong-liang / Song, Yu-Chao | Tema Archive | 2012
    coverings and cabin deck and based on ANSYS system, a dynamics analysis on structures of three different kinds of floating floors is performed using ...
    Keywords: Strukturdynamik

    CFD Application for Performance Based Safety Verification of Reinforced Concrete Beam in Computer Simulation Building Fire

    Yu, Chia-Chun / Wang, Shih-Cheng / Lin, Cherng-Shing et al. | Tema Archive | 2012
    Dynamics Simulator (FDS) fire model and PHOENICS field model software to simulate fire development and beams inner temperature variation. The ...
    Keywords: structural strength

    Modeling the Varying Dynamics of Thin-Walled Aerospace Structures for Fixture Design Using Genetic Algorithms

    Meshreki, Mouhab / Attia, Helmi / Kövecses, Jozsef | Tema Archive | 2011
    varying dynamics of thin-walled structure during machining. A formulation, based on holonomic constraints, was developed and implemented to take ...

    Contact versus non-contact measurement of a helicopter main rotor composite blade

    Luczak, Marcin / Dziedziech, Kajetan / Vivolo, Marianna et al. | Tema Archive | 2010
    accelerometer, laser vibrometer (scanning LDV) and PU-probe (acoustic particle velocity and pressure) measurements to measure the structural responses ...
    Keywords: structural health monitoring

    Nonlinear aeroelastic behaviour of compliant airfoils

    Thwapiah, Ghalib Y. / Campanile, Flavio L. | Tema Archive | 2009
    of large deformations on aerodynamics and structure. Such an analytical approach is presented in this paper and applied to a compliant ...
    Keywords: Strukturdynamik

    Scanning Laser Doppler Vibrometry for the characterization of the damping loss factor in honeycomb panels

    Martarelli, Milena / Santolini, Claudio / Sassaroli, Andrea | Tema Archive | 2009
    experimental technique allows us to perform an accurate and high-spatial density measurement of the surface velocity of the structure. The two methods ...

    Analysis of weld defects in offshore structural H beams

    Lee, Hee Keun / Kim, Jin Yong / Hwang, In Hwang | Tema Archive | 2008
    H beam welds along rolling and transverse direction were investigated with nondestructive testing, mechanical testing and microstructural ...

    Fatigue life prediction using multivariate gaussian process

    Mohanty, Subhasish / Chattopadhyay, Aditi / Peralta, Pedro et al. | Tema Archive | 2008
    A hybrid prognosis model is being developed for real-time residual useful life estimation of metallic aircraft structural components. The ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    21st century steels for 21st customers: Flat and long steel product development

    Elliot, Chris | Tema Archive | 2007
    present day, the predominant structural solution is essentially the same, namely a fine high carbon-manganese steel pearlitic structure ...

    Analysis techniques for shape-memory composite structures

    Schultz, Marc R. / Francis, William H. / Campbell, Douglas et al. | Tema Archive | 2007
    observed failure mechanism, and aided in structural design changes and improvement of key performance metrics of the structure. ...

    Durability assessment of lamb wave-based structural health monitoring nodes

    Chambers, Jeffrey T. / Wardle, Brian L. / Kessler, Seth S. | Tema Archive | 2006
    supplemental standard geared specifically towards smart structure technologies. This would incorporate SHM and other embedded or surface mounted smart ...

    The role of structural health monitoring for future air vehicles

    Derriso, Mark M. / Olson, Steven E. | Tema Archive | 2006
    vehicle systems, which are likely to include advanced materials and advanced structural concepts. Composite materials are expected to be used ...

    A design scheme aimed at minimizing actuator and structural loads of a span morphing aircraft

    Boothe, Kenny | Tema Archive | 2006
    . These surface pressures cause undesired moments and forces on the control effectors that are morphing the structure. This paper focuses on the ...

    Combustor featured fracture analysis and life prediction

    Xiong, Yuexi / Dede, Mehmet / Venkitarama, Sundaram | Tema Archive | 2006
    perspective to a structure that is under complicated mechanical and thermal loadings that cause stress levels beyond the yield strength. Different ...

    Reliability-based design optimization of composite and steel aerospace structures

    D'Ippolito, Roberto / Donders, Stijn / Hack, Michael et al. | Tema Archive | 2006
    above-mentioned probabilistic approach is demonstrated on two aerospace applications: a composite wing and a slat track structure. The material ...

    Mechanical properties of T650-35/AFR-PE-4 at elevated temperatures for lightweight aeroshell designs

    Whitley, Karen S. / Collins, Timothy J. | Tema Archive | 2006
    the primary load-bearing structure (heat shield) of the spacecraft. New high-temperature resins and composite material manufacturing ...
    Keywords: NASA (National Aeronautics and Space Administration) , Strukturwerkstoff

    Nonlinear modeling and control design of active helicopter blades

    Althoff, Matthias / Patil, Mayuresh J. / Traugott, Johannes P. | Tema Archive | 2006
    on models for the structure, aerodynamics, actuation and sensing. For simulation and analysis purposes, the blade structural model is ...

    Probabilistic approach to damage tolerance design of aircraft composite structures

    Lin, Kuen-Y. / Styuart, Andrey V. | Tema Archive | 2006
    structure, quality of repair and loads/temperatures expected between damage initiation and detection/repair. The special attention has been paid to ...

    Static strength comparison of riveted versus friction stir welded stiffened panels

    Tweedy, Bryan / Sellmeyer, Scott / Jahn, Adam et al. | Tema Archive | 2006
    significant advancements in tooling and process development. However, basic performance and design parameters for aerospace structures incorporating ...

    Post-buckling failure of welded aluminium panels

    Van Der Veen, Ir Sjoerd / Murphy, Adrian / Benedictus, Rinze | Tema Archive | 2006
    slender, and they tend to buckle and collapse at average stresses that are low compared to the strength of the material, even after welding. The ...

    The characterization of friction stir welding process effects on stiffened panel buckling performance

    Murphy, A. / McCune, W. / Price, M. et al. | Tema Archive | 2006
    has the potential to realize reductions in both manufacturing costs and structural weight. However, welding processes can introduce ...

    Tougher concrete structures to service and protect oil and gas operations

    Moncarz, P.D. / Krstulovic-Opara, N. | Tema Archive | 2005
    likely to succeed. These design features include both structural and material level considerations. The authors discuss some of the currently ...

    Innovative structural design features for a 10m solar sail demonstrator

    Laue, G. / Moore, J. / Clayton, W. | Tema Archive | 2004
    material strength issues, stress conditions for the membrane, load interactions between membrane and structure, and membrane material planarity ...

    The role of buffeting the structural design of eurofighter

    Becker, J. / Luber, W. | Tema Archive | 2003
    structure. The resulting wing/fin/fuselage dynamic loads may lead to increased material fatigue. By introduction of the buffet forces and the ...

    Design of a membrane aperture deployable structure

    Enders, J. / Kas-Danouche, S. / Liao, W. et al. | Tema Archive | 2003
    , and the size of the launch vehicle are considered. All four packaging models appear to be feasible with certain materials and hence warrant ...

    Optimal design and damage tolerance verification of an isogrid structure for helicopter application

    Baker, D.J. / Ambur, D.R. / Fudge, J. et al. | Tema Archive | 2003
    the rotorcraft that is subjected to combined in-plane compression and shear loads was generated using a design tool that utilizes a smeared ...

    Enhanced structural damage tolerance of CFRP primary structures by Z-pin reinforcement

    Clarke, A. / Greenhalgh, E. / Meeks, C. et al. | Tema Archive | 2003
    of work has shown how uniaxially loaded stiffened panels can be compared to a wingbox structure loaded in bending. Following a brief ...

    Modeling and validation of damped plexiglas windows for noise control

    Buehrle, R.D. / Gibbs, G.P. / Klos, J. et al. | Tema Archive | 2003
    Windows are a significant path for structure-borne and air-borne noise transmission in general aviation aircraft. In this paper, numerical ...

    Polyurethane foam injection and expansion in thin-film inflatable booms under semi-vacuum conditions

    Schoenfeld, M.P. / Tinker, M.L. | Tema Archive | 2003
    Investigations of the behavior and mechanics of polyurethane foam-filled deployable structures were conducted. These investigations were ...

    Durability characterization of active fiber composite actuators for helicopter rotor blade applications

    Wickramasinghe, V.K. / Hagood, N.W. | Tema Archive | 2003
    electromechanical material characterization to evaluate AFCs both as actuators and as structural components of the rotor blade. The long-term durability ...
    Keywords: faserverstärkter Werkstoff

    Characterization of polyimide foams for ultra-lightweight space structures

    Veazie, D.R. / Vincent, S. / Weiser, E. | Tema Archive | 2003
    with higher structural strength. However, if the thermal protection and lighter weight (density) is of primary concern, TEEK(trademark) foams ...

    A systematic approach to evaluate the effectiveness of engine mount systems

    Rancourt, D. / Whiteford, G.P. / Lemire, J. | Tema Archive | 2003
    Cabin noise and structural vibrations are increasingly important issues in the aircraft industry. Design of improved engine mount systems ...

    Active vibration control in rotorcraft systems using smart actuators

    Anderson, G.L. / Garg, D.P. | Tema Archive | 2002
    the structure. A smart structure is generally composed of a number of distributed sensors and actuators embedded and/or surface-mounted on a ...

    Development of rapid moisture absorption technique for composite aircraft structure

    Momose, Y. / Bandoh, S. / Hira, H. | Tema Archive | 2001
    A new rapid moisture absorption technique by absorbing at high pressure over 1 atom and high temperature over 100 degree C was proposed in ...

    Shape measurement of a flat stretched lightweight membrane for planar antenna structure

    Tsunoda, H. / Senbokuya, Y. | Tema Archive | 2001
    to make the membrane material flat enough. This imposes significant requirements on the support structure. This paper proposes the use of a ...

    Temperature distribution in a CFRP box structure subject to transient heat fluxes

    Miller, J.R. / Weaver, P.M. | Tema Archive | 2001
    Finite element and analytical approaches are used to determine the transient temperature distribution through an air-filled box structure ...

    A multifunctional flexure hinge for deploying omnidirectional solar arrays

    Hinkley, D. / Simburger, E.J. | Tema Archive | 2001
    an extremely flexible metal has been suggested. In this paper, the prior use of the superelastic Ti-Ni alloy for the structure, hinge and ...

    Analysis of high energy impact on lightweight composite (sandwich) structures

    Stresing, D.W. / Binienda, W.K. / Dhruva, V. | Tema Archive | 2001
    damage. The task is quite difficult due to the nature of the composite materials and the non-linear failure of the structure and impacting object ...

    Piezothermoelastic behavior of thin-walled composite beams with elastic couplings

    Kaiser, C. | Tema Archive | 2001
    Composite materials offer a wide range of applications in aerospace structures. Combined with integrated active components like ...

    Energy based design and analysis of staggered solvers for nonlinear transient aeroelastic problems

    Pipeno, S. / Farhat, C. | Tema Archive | 2000
    We consider the problem of solving large-scale nonlinear dynamic aeroelasticity problems in the time-domain using a fluid/structure ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    Inclusions in Ti-6Al-4V investment castings

    Cotton, J.D. / Clark, L.P. / Reinhart, T.R. et al. | Tema Archive | 2000
    maintaining the cost reduction and design efficiency possible with casting when applied to durability- and fracture-critical airframe structure. ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    Vibration of adaptive wing-rotor system for tiltrotor aircraft application

    Song, Ohseop / Kwon, Hyuck-Dong / Librescu, L. | Tema Archive | 2000
    constituent materials, transverse shear, rotatory inertias. In addition, the gyroscpic effects, spin rate and tilt angle of the spinning rotor are ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston