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Stiffness and strength tailoring in uniform space-filling truss structures (Document No: 19920015303)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lake, Mark S. |
| Copyright Year | 1992 |
| Description | A deterministic procedure for tailoring the continuum stiffness and strength of uniform space-filling truss structures, through the appropriate selection of truss geometry and member sizes (flexural stiffness, axial stiffness, and length), is presented. The trusses considered herein are generated by uniform replication of a characteristic truss cell. The repeating cells are categorized by one of a set of possible geometric symmetry groups derived using crystallographic techniques. The elastic symmetry associated with each geometric symmetry group is identified to help select an appropriate truss geometry for a given application. Stiffness and strength tailoring of a given truss geometry is enabled through explicit expressions relating the continuum stiffnesses and failure stresses of the truss to the stiffnesses and failure loads of its members. These expressions are derived using an existing equivalent continuum analysis technique and a newly developed analytical failure theory for trusses. Several examples are presented to illustrate the application of these techniques and to demonstrate the usefulness of the information gained from this analysis. |
| File Size | 1523264 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920015303 |
| Archival Resource Key | ark:/13960/t02z64w4k |
| Language | English |
| Publisher Date | 1992-04-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Geometry Structural Design Tensors Structural Stability Continuums Structural Design Criteria Stiffness Spacecraft Structures Crystallography Symmetry Loads Forces Trusses Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
