CLOSED-FORM PLASTIC COLLAPSE LOADS OF PIPE BENDS UNDER COMBINED PRESSURE AND IN-PLANE BENDING

机译：压力与平面弯曲共同作用下管道的闭式塑性破坏荷载

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Based on three-dimensional (3-D) FE limit analyses, this paper provides plastic limit, collapse and instability load solutions for pipe bends under combined pressure and in-plane bending. The plastic limit loads are determined from FE limit analyses based on elastic-perfectly plastic materials using the small geometry change option, and the FE limit analyses using the large geometry change option provide plastic collapse loads (using the twice-elastic-slope method) and instability loads. For the bending mode, both closing bending and opening bending are considered, and a wide range of parameters related to the bend geometry is considered. Based on the FE results, closed-form approximations of plastic limit and collapse load solutions for pipe bends under combined pressure and bending are proposed.

机译：基于三维（3-D）有限元分析，本文提供了组合压力和面内弯曲条件下弯管的塑性极限，坍塌和不稳定性载荷解决方案。塑性极限载荷是根据弹性极限塑性材料的有限元极限分析，使用较小的几何形状变化选项确定的，而塑性极限强度使用较大的几何形状变化选项，则可以提供塑性破坏载荷（使用两次弹性斜率方法）和不稳定负载。对于弯曲模式，考虑了闭合弯曲和打开弯曲，并考虑了与弯曲几何形状相关的各种参数。基于有限元分析的结果，提出了在压力和弯曲共同作用下弯管的塑性极限和倒塌载荷解的闭合形式近似。

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来源
《ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.5: High-Pressure Technology...》|2006年|387-398|共12页
会议地点 Vancouver(CA)
作者
Chang-Sik Oh; Yun-Jae Kim;
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作者单位

Korea University Department of Mechanical Engineering 1-5ka, Anam-Dong, Sungbuk-Ku Seoul 136-701, Korea;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工业用热工设备;
关键词
M_o: Limit/collapse in-plane moment of a pipe bertd; M_o~s: Limit in-plane moment of a straight pipe; P_o: Limit pressure of a pipe bend; P_o~s: Limit pressure of a straight pipe; R: Bend radius; r: Mean pipe radius; t: Thickness of pipe; λ: Bend characteristic, = Rt/r~2; σ_o: Yield strength;

机译：M_o：管道伯德的极限/塌陷平面力矩； M_o〜s：限制直管的平面内力矩； P_o：弯管的极限压力； P_o〜s：直管极限压力； R：弯曲半径； r：平均管道半径； t：管道厚度； λ：弯曲特性，＝ Rt / r〜2； σ_o：屈服强度;

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专利

1. Closed-form plastic collapse loads of pipe bends under combined pressure and in-plane bending [J] . Yun-Jae Kim, Chang-Sik Oh Engineering Fracture Mechanics . 2006,第11期

机译：组合压力和面内弯曲条件下弯管的闭合形式塑性破坏载荷
2. Comparison of plastic limit and collapse loads in pipe bends with shape imperfections under in-plane bending and an internal pressure [J] . T. Christo Michael, A. R. Veerappan, S. Shanmugam International Journal of Pressure Vessels and Piping . 2012,第Null期

机译：平面内弯曲和内部压力下具有形状缺陷的弯管的塑性极限载荷和塌陷载荷的比较
3. Development of a plastic collapse assessment procedure in the p-M diagram method for pipe bends with a local thin area under combined internal pressure and external in-plane bending moment [J] . Kenji Oyamada, Shinji Konosu, Takashi Ohno Nuclear Engineering and Design . 2012,第Juna期

机译：在内部压力和外部平面内弯矩共同作用下具有局部薄区域的弯管的p-M图方法中塑性塌陷评估程序的开发
4. CLOSED-FORM PLASTIC COLLAPSE LOADS OF PIPE BENDS UNDER COMBINED PRESSURE AND IN-PLANE BENDING [C] . Chang-Sik Oh, Yun-Jae Kim, American Society of Mechanical Engineers ASME Pressure Vessels and Piping Conference . 2007

机译：封闭式塑料坍塌载荷的载荷在组合压力和面内弯曲下弯曲
5. Behaviour of cold bend pipes under combined loads. [D] . Sen, Millan. 2006

机译：冷弯管在组合载荷下的行为。
6. A Novel Soft Bending Actuator Using Combined Positive and Negative Pressures [O] . Mohammad Fatahillah, Namsoo Oh, Hugo Rodrigue 2020

机译：结合正负压力的新型软弯曲驱动器
7. Plastic collapse of pipe bends under combined internal pressure and in-plane bending [O] . Robertson, A.C., Li, H., Mackenzie, D. 2005

机译：内压和面内弯曲共同作用下弯管的塑性塌陷
8. Design Criteria for Piping Components Against Plastic Collapse Application to Pipe Bend Experiments [R] . Touboul, F. , Ben Djedidia, M. , Acker, D. 1988

机译：管道部件抗塑性坍塌应用于弯管实验的设计标准

CLOSED-FORM PLASTIC COLLAPSE LOADS OF PIPE BENDS UNDER COMBINED PRESSURE AND IN-PLANE BENDING

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