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Research on new type of numerical method for material creep analysis

Journal of Coal Science & Engineering(China) 2008年第4期14卷 625-627页

作者：赵光明 School of Mining and Safety Anhui University of Science and TechnologyHuainan 232001China

Based on the principles of virtual work for continuum medium,the element free Galerkin method to simulate the numerical calculations of steady-state creep was used and the discrete equation was derived in meshlss method for steady-state *** es- sential boundary conditions and volume incompressible conditions can be realized by em- ploying the penalty parameters,so the symmetric positive definite system stiffness matrix can be *** of numerical cases show that element free Galerkin method,with its high accuracy,is much more convenient to deal with the pre-process and post-process, the results by meshless method is in good agreement with the exact solution data.

关键词： material creep meshless method element free Galerkin method penalty method

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Finite Element Structural Analysis of Buried Pipelines

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Modern Mechanical Engineering 2022年第2期12卷 27-44页

作者： Casanova-del-Angel Francisco Córdova-Castillo Alejandra Escuela Superior de Ingeniería y Arquitectura UP ALM SEPI of the Instituto Politécnico Nacional Mexico City Mexico

This document uses previous results (which we call the first stage), for the development of a computer model based on finite elements under the FEAP programmer, to carry out a structural analysis of a pipeline. For this purpose, we used environmental variables that we believe influence the failure of buried pipelines such as the internal pressure of fluid, the type of support used, the temperature at which the pipelines work, the type of soil and the stiffness of the soil acting on it. Once the model was finalized, analyses were made with each of the variables separately and combined to observe the behavior of the pipeline, finding the most unfavorable case that indicates the main causes that led to its failure.

关键词： Duct Finite Element Buried Pipeline material creep Thermal Conditions Soil Springs

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