Integrated Anti-Crack Finite Element Analysis of Reactor Pressure Vessel
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Abstract
Under the loads of radioactive and other complex work conditions, reactor pressure vessel is prone to fatigue crack propagation of structures, which could lead to catastrophic damage. In this paper we introduced the developed finite element software ATLAS. By fully using of three-dimensional rendering capabilities of the GPU, ATLAS provided a large-scale highly interactive visualization environment for engineers. At first, ATLAS was used to analyze the size and location impact of the stress and displacement. Then, according to the structures and the forces of the pressure vessel, we created the model and load constraints, and analyzed the stress and deformation of the pressure vessel, simulated its working conditions, and determined its overall service life and weakness. We found that ATLAS can quickly calculate the stress linearization and the stress intensity factor, and complete the crack CAE analysis. In addition, we tested the anti-fracture analysis in accordance with ASME BPVC III D1 Standard Appendix G. By comparing the calculated values, conclusions can be drawn on whether it meets the anti-fracture requirements or not.
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