a significant research activity at the nasa lewis research center is the computational simulation of complex multidisciplinary engine structural problems. this simulation is performed using computational engine structural analysis (cesa) which consists of integrated multidisciplinary computer codes in conjunction with computer post-processing for problem-specific application. a variety of the computational simulations of specific cases are described in some detail in this paper. these case studies include (1) aeroelastic behavior of ...
Stress- magnification factors were obtained for the effect of mismatch of the middle surfaces at junctions in shell structures. The results are directly applicable only when the thickness and the slope on one side of a mismatched joint are the same as those on the other. Results are found for biaxial stress states with any principal stress ratio at the joint, including cases in which the stresses are of opposite ...
The patent relates to improvements in the circuits and operation of television camera tubes. The invention reduces the noise level by interrupting the beam at a radio frequency rate and makes possible a continuous presentation of the scene by maintaining the beam at such a level that it approaches but does not actually reach the target.
The deformation and complete stress distribution are determined for each of the following edgeloaded thin shells: (1) a right circular cylinder, (2) a frustum of a right circular cone, and (3) a portion of a sphere. The locations of maximum circumferential and meridional stresses are also found. Equations are developed for discontinuity shear and moment at the following junctions: (1) axial change of thickness in a circular cylinder, (2) axial ...
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