1–20 of 83 hits
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    Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade

    Tang, D.M. / Dowell, E.H. | Tema Archive | 1992
    geometrical and freeplay structural nonlinearity. The ONERA stall aerodynamic model is used. External excitations are provided by base harmonic ...

    Reliability analysis and quality assurance of rocket motor case considering proof testing

    Yang, J.N. / Chen, H.Y. / Chang, C.M. et al. | Tema Archive | 1993
    overall strength of the structure is large. Proof testing is shown to be ineffective if the variability of the overall structural strength is ...

    Aerothermoelastic analysis of a NASP demonstrator model

    Heeg, J. / Zeiler, T.A. / Pototzky, A.S. et al. | Tema Archive | 1993
    flight through the atmosphere could destiffen a structure, significant couplings between the elastic and rigid body modes could result in lower ...

    Application of ultra-high modulus composites to primary structures

    Foster, J.L. / Tracy, J.J. / Elizondo, C.A. | Tema Archive | 1993
    the primary load path for a typical large space structure are highlighted. Mechanical properties for both mature and recently developed pitch ...

    Energy-absorbing-beam design for composite aircraft subfloors

    Carden, H.D. / Kellas, S. | Tema Archive | 1993
    current study is the design and testing of subfloor structural concepts that would limit the loads transmitted to occupants to less than 20 g at ...

    Damage tolerance analysis of composite transport fuselage structure

    Dopker, B. / Murphy, D.P. / Ilcewicz, L. et al. | Tema Archive | 1994
    concentrations arising from such flaws affect the stable growth of damage and ultimately failure strength of the structure. The concept of a DZM is to ...
    Keywords: faserverstärkter Werkstoff

    An analysis of warping effects on the static and dynamic response of an aircraft seat-type structure

    Rahematpura, M. / Hooper, S.J. | Tema Archive | 1994
    seat-type structure subjected to impact loading. The test article design featured thin-walled open-section beams and was loaded inertially by a ...

    Damage tolerance design of composite structures

    Graesser, D.L. / Tuttle, M.E. | Tema Archive | 1994
    used extensively in the design of metallic fuselage structures, is extended for application to a laminated composite structure. Generalized ...
    Keywords: Bruch (Material)

    Stress considerations in reduced-size aeroelastic optimization

    Karpel, M. / Brainin, L. | Tema Archive | 1994
    -out changing the coordinates. These expressions, and their derivatives with respect to structural design variables are investigated in ...

    Combined aerodynamic and structural optimization of a civil transport wing

    Röhl, P.J. / Mavris, D.N. / Schrage, D.P. | Tema Archive | 1995
    ASTROS structural optimization tool. The wing structure is sized subject to strength, buckling, and aeroelastic constraints. The buckling ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Derivation of 0-g structural control models from analysis and 1-g experimentation

    Glaese, R.M. / Miller, D.W. | Tema Archive | 1995
    with a 1-g model, which includes gravity and suspension effects on the structure. This 1-g model is improved using ground test results in a ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    The analytical treatment of composite materials in aircraft ballistic vulnerability assessments

    Yerdon, K.M. | Tema Archive | 1995
    aircraft systems. One of the area that may significantly affect the vulnerability of the aircraft is the use of composite materials for structure ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Low cost composite fabrication methods applied to low observable structure

    Guy, T.A. / Sanger, K.B. / Ruskowski, E. | Tema Archive | 1995
    syntactic foam (TPSF), and resin film infusion (RFI) technology applied to LO materials and structural configurations. The demonstration article ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington
    Keywords: poröser Werkstoff

    Experimental determination of local structural stiffness by disassembly of measured flexibility matrices

    Peterson, L.D. / Doebling, S.W. / Alvin, K.F. | Tema Archive | 1995
    A new method is presented for identifying the local stiffness of a structure from vibration test data. The method is based on a projection ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Monitoring the integrity of composite patch structural repair via piezoelectric actuators/sensors

    Chaudhry, Z. / Lalande, F. / Ganino, A. et al. | Tema Archive | 1995
    throughout the service life of the structure. Described in this paper are the test methods and results of a vibration signature-based technique used ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Suppression of nonlinear flutter of composite panels at supersonic speeds and elevated temperatures

    Zhou, R.C. | Tema Archive | 1995
    Coupled structure-electrical nonlinear finite element actuator and sensor equations of motion for flutter control are derived for composite ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Reduction of vertical tail buffet response using active control

    Hauch, R.M. / Jacobs, J.H. / Ravindra, K. et al. | Tema Archive | 1995
    , strain gage sensors and simple control techniques. The AVT is a 5%-scale aeroelastically-tailored structure that exhibits vibration response ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    A new substructures system identification method

    Craig, R.R. jun. | Tema Archive | 1995
    interface-DOF entries included. Multiple-boundary-condition tests are not required, and test-stand dynamics is accounted for without a separate test ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Aspects of edge debonding in patched structures

    Loia, M.A. / Bottega, W.J. | Tema Archive | 1995
    relative stiffness and relative length of the patch with respect to those of the base structure are examined and compared. The problems are ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Modeling of composite turbo-propellers using an efficient six-node triangular finite element

    Bhumbla, R. / Kosmatka, J.B. | Tema Archive | 1995
    ) turbo-propeller blade and for a blade with similar geometry made with advanced composite materials (graphite/epoxy). These results are compared ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington