|
|
||
|
|
|
|
This is Fig. 18 from the 2011 GENOPT paper, "Use of GENOPT and BIGBOSOR4 to obtain optimum designs of an axially compressed cylindrical shell with a composite truss-core sandwich wall" by David Bushnell and Charles Rankin, AIAA 52nd Structures, Structural Dynamics, and Materials Conference, 2011, AIAA Paper 2011-1811, referred to as "2011 GENOPT paper" in the next three slides.
This slide shows part of a STAGS model for the specific case called “nasatruss2” (Table 3 of the 2011 GENOPT paper). This is a close-up view of a STAGS finite element model of one of the local buckling modules. Each shell unit in the STAGS model is shown in a different color.
The black “units” represent the noodles. (See the GENOPT slide show for an explanation of what a "noodle" is.) Unfortunately, STAGS does not show the eccentricity of the noodle centroid with respect to its attachment point of the face sheet. However, this eccentricity is present and accounted for in the STAGS model.
The STAGS input file, *.inp, is automatically created by the generic GENOPT/BIGBOSOR4 case called "trusscomp" and the specific case called "*", in which "trusscomp" is the generic case name selected by the GENOPT user and "*" stands for the end-user-selected specific case name.
Comparisons between results from GENOPT/BIGBOSOR4 and general purpose computer programs such as STAGS [15-18] are provided in [1].
In order to see figures referred to here but not shown here, please download the 2010 GENOPT paper from this website.
Page 30 / 35