ELASTIC MODULUS ADJUSTMENT IMPROVED CONVERGEMENT SCHEMES USING VARIABLE LOCAL CONSTRAINTS

机译：使用可变局部约束的弹性模量调整改进的收敛方案

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Elastic modulus adjustment procedures (EMAP) have been employed to determine limit loads of pressure components. On the basis of linear elastic Finite Element Analysis (FEA) with non-hardening elastic properties, i.e., by specifying spatial variations in the elastic modulus, numerous set of statically admissible and kinematically admissible distributions can be generated, and both lower and upper bounds on limit loads can be obtained. Some methods such as the classical, r-node and m_α methods provide limit loads on the basis of partly-converged distributions, whereas the accuracy of linear matching procedures rely on fully converged distributions. In this paper, a criterion for establishing the degree of convergence of EMAP is developed, and a simple procedure for achieving improved convergence is described. The procedure is applied to some practical pressure component configurations.

机译：弹性模量调整程序（EMAP）已用于确定压力分量的极限载荷。在具有非硬化弹性特性的线性弹性有限元分析（FEA）的基础上，即通过指定弹性模量的空间变化，可以生成许多组静态允许和运动允许的分布，并且上下界可以获得极限载荷。某些方法（例如经典方法，r节点方法和m_α方法）基于部分收敛的分布提供极限载荷，而线性匹配过程的准确性取决于完全收敛的分布。本文提出了一种建立EMAP收敛程度的准则，并描述了一种实现改善收敛的简单过程。该程序适用于一些实际的压力组件配置。

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《ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.2: Computer Technology; 20050717-21; Denver,CO(US)》|2005年|P.233-239|共7页
会议地点 DenverCO(US)
作者
R. Adibi-Asl; Ihab F. Z. Fanous; R. Seshadri;
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作者单位

Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Canada-A1B 3X5;

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原文格式 PDF
正文语种 eng
中图分类压力容器;
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4. ELASTIC MODULUS ADJUSTMENT IMPROVED CONVERGEMENT SCHEMES USING VARIABLE LOCAL CONSTRAINTS [C] . R. Adibi-Asl, Ihab F. Z. Fanous, R. Seshadri, ASME Pressure Vessels and Piping Conference: Computer Technology . 2005

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ELASTIC MODULUS ADJUSTMENT IMPROVED CONVERGEMENT SCHEMES USING VARIABLE LOCAL CONSTRAINTS

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