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  • 1
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    An optimality criterion for sizing members of heated structures with temperature constraints (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A thermal optimality criterion is presented for sizing members of heated structures with multiple temperature constraints. The optimality criterion is similar to an existing optimality criterion for design of mechanically loaded structures with displacement constraints. Effectiveness of the thermal optimality criterion is assessed by applying it to one- and two-dimensional thermal problems where temperatures can be controlled by varying the material distribution in the structure. Results obtained from the optimality criterion agree within 2 percent with results from a closed-form solution and with results from a mathematical programming technique. The thermal optimality criterion augments existing optimality criteria for strength and stiffness related constraints and offers the possibility of extension of optimality techniques to sizing structures with combined thermal and mechanical loading.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-TN-D-8525 , L-11601
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The general solution to the classical problem of finite Euler Bernoulli beam (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An analytical solution is obtained for the problem of free and forced vibrations of a finite Euler Bernoulli beam with arbitrary (partially fixed) boundary conditions. The effects of linear viscous damping, Winkler foundation, constant axial tension, a concentrated mass, and an arbitrary forcing function are included in the analysis. No restriction is placed on the values of the parameters involved, and the solution presented here contains all cited previous solutions as special cases.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-TM-X-73253 , A-7076
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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