Experimental Verification of Space Truss Behavior

在过去的十年中进行的试验研究表明，双层网架的试验行为与分析预测之间存在偏差。然而，在最近对定制设计的桁架进行的改进实验设计的测试中，缺陷被最小化，获得了更好的相关性。大多数实用的空间桁架系统确实存在自然的和不可避免的缺陷，因此，这些结果不能直接转化为实际的空间桁架。将在小型实验网架上进行一系列试验，以演示这些结构的基本承载和破坏机理。测试的结果将与最先进的分析预测进行比较。这些试验将演示网架的破坏机理和基本结构行为。

Experimental research conducted during the past ten years has tended to indicate that there is a deviation between experimental behavior and analytical predictions for double layer grid space trusses. However, in recent tests in an improved experiment design on a custom designed truss in which imperfections were minimized, much better correlation was obtained. Most practical space truss systems do have natural and unavoidable imperfections and, as a consequence, these results cannot be directly translated to practical space trusses. A series of tests will be performed on small experimental space trusses to demonstrate the fundamental load carrying and failure mechanisms of these structures. The results of the tests will be compared with state-of-the-art analytical predictions. The experiments will demonstrate space truss failure mechanisms and fundamental structural behavior.