Review of Preliminary Analysis Techniques for Tension Structures.
Final rept. 1 Oct 82-30 Sep 83,
OREGON STATE UNIV CORVALLIS DEPT OF CIVIL ENGINEERING
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This report is a state-of-the-art review of engineering approaches for the preliminary design and analysis of tension membrane structures. It defines three phases of construction which must be addressed, and then discusses the fundamental, nonlinear structural mechanics governing the behavior of each phase. Both computer and noncomputer methods are discussed in the report. The important engineering properties of fabric membranes are defined. The basic geometric nonlinearity of these structures is emphasized, and among other things, is said to preclude the practice of load case superposition. Establishing the nonlinear static reference configuration will often remain a difficult task. Once established, however, a linear dynamic analysis can be conducted for purposes of preliminary design, relative to the static configuration. It is noted that the amount of prestress in the static configuration has a large affect on the vibration properties of the structure. Ultimately, nonlinear effects must be included in the final design and analysis. Current analysis methods necessarily involve the computer are also expensive. The report concludes with recommendations for research to reduce the cost of structural analysis, to obtain additional engineering data on fabric stress-strain laws, and to obtain experimental data on the behavior of tension structures.
- Coatings, Colorants and Finishes
- Structural Engineering and Building Technology