This paper proposes a mesh simplification algorithm based on vertex's curvature, which use edge collapse method to reduce the density of low-curvature region of meshes.
本文提出的网格简化算法是根据网格顶点的曲率，采用边折叠的方式来减少低频区域的网格顶点密度。
Progressive collapse method is used to calculate ship ultimate hull girder strength and the combination of surface response method and traditional method is utilized to analyse reliability.
采用渐进崩溃法计算船体总纵极限强度，将响应面法与传统可靠性计算方法相结合来进行船体总纵极限强度可靠性分析。
With the help of plastic hinge theory and collapse theory, the formulas for calculating strength failure load and the method for computing collapse load were established respectively.
分别利用塑性铰理论和压溃理讨论了强度计算问题，提出了强度承载能力计算公式和压溃荷载计算方法。
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