Evaluation of the pressure-resistance of the intersection of a Membrane-type primary barrier: part 2 finite element analysis
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Hydraulic pressure tests were performed using an apparatus developed to simulate large compressive loads acting on the outer wall of a membrane-type primary barrier. However, the precise processing required to fabricate the complex intersecting corru-gations on the test sample limits the number of test samples that could be produced, and thus performing tests under a variety of pres-sure-range conditions is impractical. The aims of this study were to conduct hydraulic pressure tests using the finite element method and to propose a design support methodology validated by the experimental results. Surface data were extracted using an optical three-dimensional scanner to analyze the complex geometry of the intersection, and quasi-static tensile test data for the primary bar-rier material were used to describe the plastic behavior. The finite element analysis results confirmed that the von Mises equivalent stress significantly increased within the tested pressure range, which indicated increased plastic deformation and decreased load-bearing capacity.
Abstract
Hydraulic pressure tests were performed using an apparatus developed to simulate large compressive loads acting on the outer wall of a membrane-type primary barrier. However, the precise processing required to fabricate the complex intersecting corru-gations on the test sample limits the number of test samples that could be produced, and thus performing tests under a variety of pres-sure-range conditions is impractical. The aims of this study were to conduct hydraulic pressure tests using the finite element method and to propose a design support methodology validated by the experimental results. Surface data were extracted using an optical three-dimensional scanner to analyze the complex geometry of the intersection, and quasi-static tensile test data for the primary bar-rier material were used to describe the plastic behavior. The finite element analysis results confirmed that the von Mises equivalent stress significantly increased within the tested pressure range, which indicated increased plastic deformation and decreased load-bearing capacity.
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