6 July 1998 Simulation and experiment on the thermal deformation of composite tubes
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Deformations of thermally loaded composite tubes are studied by means of Finite-Element-Analyses and interferometric measurement techniques. Of particular interest are the differences in the deformation behavior of the two investigated anisotropic tubes in comparison to isotropic tubes. Two characteristic bending phenomena appear at the frontal and the shell surface of the tubes, owing to the three-dimensional stress state near the edges. These simulated phenomena are experimentally verified by means of holographic as well as speckle interferometry. The results of this work show that in most cases the implemented micro- and macro- mechanics of the used Finite-Element models enable to properly predict the thermal deformation of composite tubes. Nevertheless, especially for very thin tubes, significant discrepancies between the simulated and the measured deformations could appear, due to the disregarding of the complex microscopic structure in the simulation. Thus, experimental verifications of the simulated thermal deformation of composite tubes are necessary. Generally, these verification measurements should be performed with fieldwise experimental methods, like the presented interferometric measurement techniques.
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Daniel Holstein, Petra Aswendt, Roland Hoefling, Claus-Dieter Schmidt, Werner P. O. Jueptner, "Simulation and experiment on the thermal deformation of composite tubes", Proc. SPIE 3479, Laser Interferometry IX: Applications, (6 July 1998); doi: 10.1117/12.316457; https://doi.org/10.1117/12.316457

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