| PLASTIC LIMIT LOAD ANALYSIS OF DEFECTIVE PIPELINES |
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| 作者姓名： | ChenGang LiuYinghua XuBingye |
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| 作者单位： | [1]CenterforBoilerandPressureVesselInspectionandResearch,GeneralAdministrationofQualitySupervision,InspectionandQuarantine,Beifing100013,China [2]DepartmentofEngineeringMechanics,TsinghuaUniversity,Belting100084,China |
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| 基金项目： | Project supported by the Ministry of Science and Technology of China (No.2001BA803B03-05). |
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| 摘 要： | The integrity assessment of defective pipelines represents a practically important task of structural analysis and design in various technological areas, such as oil and gas industry, power plant engineering and chemical factories. An iterative algorithm is presented for the kinematic limit analysis of 3-D rigid-perfectly plastic bodies. A numerical path scheme for radial loading is adopted to deal with complex multi-loading systems. The numerical procedure has been applied to carry out the plastic collapse analysis of pipelines with part-through slot under internal pressure, bending moment and axial force. The effects of various shapes and sizes of part-through slots on the collapse loads of pipelines are systematically investigated and evaluated. Some typical failure modes corresponding to different configurations of slots and loading forms are studied.
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| 关 键 词： | 极限荷载 迭代法 结构分析 结构设计 复杂载荷 有缺陷管道 |
| 收稿时间： | 1 November 2001 |
PLASTIC LIMIT LOAD ANALYSIS OF DEFECTIVE PIPELINES |
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| ChenGang LiuYinghua XuBingye.PLASTIC LIMIT LOAD ANALYSIS OF DEFECTIVE PIPELINES[J].Acta Mechanica Solida Sinica,2003,16(2):102-109. |
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| Authors: | Chen Gang |
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| Institution: | (1) Center for Boiler and Pressure Vessel Inspection and Research, General Administration of Quality Supervision, Inspection and Quarantine,, 100013 Beijing, China;(2) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China |
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| Abstract: | The integrity assessment of defective pipelines represents a practically important task of structural analysis and design in various technological areas,such as oil and gas indus- try,power plant engineering and chemical factories.An iterative algorithm is presented for the kinematic limit analysis of 3-D rigid-perfectly plastic bodies.A numerical path scheme for radial loading is adopted to deal with complex multi-loading systems.The numerical procedure has been applied to carry out the plastic collapse analysis of pipelines with part-through slot under internal pressure,bending moment and axial force.The effects of various shapes and sizes of part-through slots on the collapse loads of pipelines are systematically investigated and evaluated.Some typical failure modes corresponding to different configurations of slots and loading forms are studied. |
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| Keywords: | limit load iterative algorithm defective pipeline complex loadings |
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