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The error-bounded Piecewise Linear Approximation (PLA) is to approximate the stream data by lines such that the approximation error at each point does not exceed a pre-defined error. In this paper, we focus on the version of PLA problem that generates connected lines in the segmentation for smooth approximation. We provide a new linear-time algorithm for the problem that outperform two of the existing...
Based on the elastic and plastic theory, Three-dimension milling Finite Element Method model is established in this thesis, which can be used in the machining deformation field analysis. This model simulates the process of material cutting off, which uses the technology of element die and birth. The machining deformation law is researched resulted by the release of residual stress in milling process...
The residual stress affects the corrosion, craze, fatigue strength mechanics performance, and so on, which strongly affects the material physics and mechanics performance as well and does harm to the structure. A method of the residual stress dynamic measurement is advanced to measure the distribution of residual stress in thick prestretched aluminum plate. In the measuring process, the dynamic resistance...
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