Research on Deformation Properties and Boundary Effect of Composite Sandwich Structure under Deep Hydrostatic Pressure

Abstract:

Composite sandwich structures have been used more and more widely in the underwater structures, therefore deformation problems under deep-water hydrostatic pressure can not be ignored. For the deformation properties of composite sandwich structures under deep-water hydrostatic pressure, the paper carried out theoretical and test research. First, the paper analyzed the surface deformation features as well as the law of the element’s cross-sectional dimension, the core thickness and elastic modulus to the surface deformation by establishing theoretical analysis model; The results show that the deformation area can be divided into central area and boundary area, and the boundary effect is an important factor affecting the deformation, the core parameters can affect the reach of boundary effect. Second, the paper carried out hydrostatic test of composite sandwich structural element model, and then verified the theoretical analysis model’s rationality and accuracy by comparing the test results and theoretical results.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 3907-3911
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.3907
• Online since: March 2012
• Authors: Jia Bo Qiu, Zhi Yuan Mei
• Keywords: Boundary Effect, Composite, Elastic Foundation Plate, Hydrostatic Testing, Sandwich

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