By Ernest Hinton BSc, MSc, PhD, SDc, CEng, MIStructE, MBCS, Johann Sienz BEng, DipI-Ing (FH), MSc, PhD, Dr-Phil (GB), CEng, MIMechE, Cmath, MIMA, Mustafa Özakça BSc, MSc, PhD (auth.)
Shell-type buildings are available nearly far and wide. they seem in traditional kinds but additionally as man-made, load-bearing elements in different engineering platforms. Mankind has struggled to duplicate nature’s optimization of such constructions yet utilizing glossy computational instruments it truly is now attainable to examine, layout and optimise them systematically. research and Optimization of Prismatic and Axisymmetric Shell constructions gains: finished assurance of the history concept of shell constructions; improvement and implementation of trustworthy, artistic and effective computational instruments for static and free-vibration research and structural optimization of variable-thickness shells and folded-plate buildings; built-in computer-aided curve and floor modelling instruments and automated mesh iteration, structural research sensitivity research and mathematical programming equipment; well-documented, downloadable Fortran software program for those strategies utilizing finite point and finite strip simulations that are without problems tailored by way of the reader for the answer of useful difficulties or to be used inside a educating or learn atmosphere. Written through top specialists in finite point and finite strip equipment, research and Optimization of Prismatic and Axisymmetric Shell constructions should be of serious curiosity to researchers in structural mechanics and in automobile, aerospace and civil engineering in addition to to designers from all fields utilizing shell constructions for his or her strength-per-unit-mass advantages.
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Additional resources for Analysis and Optimization of Prismatic and Axisymmetric Shell Structures: Theory, Practice and Software
All the points on th e B-spline curve lie within th e convex hull of the corresponding B-characteristi c polygon. 23) All these relations have a geometrical interpr etation . 3, which shows some of the geometrical features of th e cubic B-spline curve segment mention ed above. The start ing point Po is on the median BIBi of th e tr iangle B oB IB2 and t he tangent vector p'(O) at this point is parallel to th e side B oB2 of t he tr iangle and the magnitud e of B oB 2 is twice that of p' (0). A similar geometrical characterist ic can also be described for the end point Pl .
3. Some key points are common to different segments at their points of intersection. At such intersections one can impose C(O) continuity (a kink), as in branched shells. Alternatively, a smooth continuous curve having C(2) continuity can be obtained, as in smooth shells. The thickness or the applied pressure are also specified at some or all of the key points of the shell structure, and from there they are interpolated using cubic splines. 6 Element Technology Because of severe economic constraints and stringent deadlines coupled with the enormous growth in computer speed and power, engineers are resorting to numerical methods for the analysis of shell structures.
PREP is an automat ic, adapt ive mesh generator th at generates linear , quadr atic and cubic elements followed by a simultaneous profile and frontwidth minimization (see Chapte r 2). • OPTIMIZE demonstr ates the opt imizer used in SANOPT-S and SANOPTF (see Chapte r 3). SANOPT-P, SPLI NE and PREP contain a PostScript driver allowing for visualizatio n of the shapes generated and t he results computed. All the programs are written in Fort ran 77 using double precision. Th e programs and test data are provided on a CD-ROM included wit h the book.
Analysis and Optimization of Prismatic and Axisymmetric Shell Structures: Theory, Practice and Software by Ernest Hinton BSc, MSc, PhD, SDc, CEng, MIStructE, MBCS, Johann Sienz BEng, DipI-Ing (FH), MSc, PhD, Dr-Phil (GB), CEng, MIMechE, Cmath, MIMA, Mustafa Özakça BSc, MSc, PhD (auth.)