Tool for Thin-Walled Prismatic Structures
What are Thin-Walled Prismatic Structures? Thin-walled prismatic structures are very common; an "I" beam is an example. Any beam of constant cross-section where the components of the cross-section (webs,flanges etc) have a length to thickness ratio of > 10 are thin-walled prismatic structures.
Why a Special Tool? The basic assumptions for "solid" beams do not apply for thin-walled beams:
Simple Illustration Consider a "Z" beam, 100 inches long, fully constrained at one end and free at the other. A force of 1000 lb is slung off a corner at the free end. See main display. In the plot, you see the variation of the bimoment over the length of the beam as well as the (dominated) Saint Venant's torsion (Msv) and warping torque (Mds). Note that the bimoment is zero at the free end, since the section is free to warp there, and that it is nonzero everywhere else (please excuse the overlapping text).If the bimoment plot is toggled off we get a better display of the torsion forces.
Various section analyses, (for a more detailed discussion of this example see Oden's _Mechanics of Elastic Structures_ , Section 7.9.)
Summary of Features
Limitations This first release is limited to linear analysis of structure composed of homogeneous isotropic materials. Elastic buckling and vibration will be addressed in the follow on release.
Current Version: Beta Test
License Type: Commercial
Source Code Availability: No
Available Binary Packages:
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