• Then the improved model is used to calculate the final casing collapse strength. This method combines FEA and strain test together and thus can get more …

    方法有限元计算应变检测结合起来,大大提高有限元计算的精度,对预测套管的挤毁压力、指导高抗挤套管的开发具有一定的参考价值。

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  • With the improvement of the production and manufacture technology of casing, the actual collapse strength of casing cannot be accurately calculated by present API 5C3 formula.

    随着套管制造工艺水平不断提高制造质量的显著改进,现有API5C3公式不能正确预测套管实际抗挤抗内压强度

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  • With finite element method, the collapse strength of casing with ovality and eccentricity under unidirectional uniform and ellipse distributive force was calculated and analyzed.

    采用有限元计算分析了壁厚不均椭圆套管单向均匀和单向椭圆分布外挤力作用强度问题。

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  • Mechanical characteristic of ct is studied. The model of bending, internal pressure strength and external collapse strength, diametric growth and stuck-point of ct is established.

    研究了连续油管工作力学特性建立了连续油管弯曲、抗强度外部挤毁压力、直径增长、纵向伸长点位置分析计算模型

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  • It is also found that the collapse strength of the even wear model was different from that of the uneven wear one. A quite great error would happen if a wrong model has been used.

    同时指出,在计算套管抗挤毁强度时,用均匀磨损模型代替均匀磨损模型,计算结果有较大误差

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  • The proposal model of the high collapse strength in this paper can't only provide the given reference for the present high collapse strength, but also improve the casing manufacturing quality.

    本文给出高抗挤套管抗挤强度计算的建议模型不仅提供现行高抗挤套管抗挤强度的额定参考值而且帮助厂家改进高抗挤套管质量

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  • In view of a collapse accident of the roof-fram, the strength and the stability of a collapsed roof-fram is analysed in detail.

    本文针对一起屋架坍塌事故,详尽分析坍塌屋架强度稳定性

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  • No substrate deformation and collapse, no strength reduction and cracks after welding.

    基材结构变形的影响,无变形塌陷焊接强度减小龟裂

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  • The casing strength of collapse resistance is an important index of weighing the performance of casing strength.

    套管强度衡量套管强度性能一项重要指标

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  • Clean collapse Cause of the high cost of materials, spare parts, equipment failure, low efficiency, increase use the Labour strength of the workers.

    造成材料配件费用故障多,设备使用效率增加工人劳动强度

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  • 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.

    采用渐进崩溃计算船体总纵极限强度响应传统可靠性计算方法相结合进行船体总纵极限强度可靠性分析

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  • Based on the strength criterion of the incremental plastic collapse, the inelastic deformation behavior of a ship's hull girder under cyclic bending loads was discussed in detail in this paper.

    根据递增塑性破坏强度准则,详细讨论循环弯曲载荷船体弹性变形性能

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  • The coal bed has a low mechanical strength and porosity in comparison with the normal oil and gas formation, so it is easy to collapse and easy to be polluted.

    煤层一般油气相比机械强度孔隙度低,所以坍塌、易污染

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  • Furthermore, a large reserve of strength is present between the initial yielding and the collapse of the structure.

    此外储量力量之间初始收益率目前结构崩溃

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  • The influence of cement on strength and collapse of loss was simply studied in this paper, Loess-cement is endowed with theory of "water-harden" physical -chemical reaction.

    本文简略地分析了水泥黄土强度湿陷灾害影响提出水泥黄土具有“水硬性物理化学反应理论

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  • Strength: Valukus may prove a one-hit wonder, but his 2,200 page report on the collapse of Lehman Brothers has already gone platinum.

    优势沃鲁卡斯或许只会昙花一现2,200雷曼破产调查报告已经名垂青史。

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  • Considering the requirements of riser strength, system collapse, propagated buckling and limitation of floating, the smallest thickness that meets the requirements is determined.

    综合考虑规范对立强度要求,防止发生压溃屈曲扩展的要求及限制立管发生漂浮要求三个条件,确定了满足条件的最小壁厚

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  • 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.

    分别利用塑性理论理讨论强度计算问题,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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  • The strength properties and initial collapse conditions of locss;

    浸水强度湿陷初始条件

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  • The strength of the junction may be limited by plastic collapse of the junction or by elastic or plastic buckling of the ring.

    转折连接主要破坏模式包括塑性破坏梁的弹性塑性屈曲

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  • By ultimate strength analysis at various conditions, the collapse of platform is caused by breakage of pile leg. And the brace breakage can also decrease the strength of the platform.

    经过平台不同情况下承载力分析,发现平台倒塌破坏均为平台破坏,同时撑杆的破坏降低平台强度储备。

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  • The special mechanical properties of the soft layer has low strength, weak resistance to weathering, soften by water and collapse after losing water.

    长沙地区红砂岩软硬岩交互沉积而成,其具有强度风化能力差、遇软化失水崩解特殊力学性质

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  • The special mechanical properties of the soft layer has low strength, weak resistance to weathering, soften by water and collapse after losing water.

    长沙地区红砂岩软硬岩交互沉积而成,其具有强度风化能力差、遇软化失水崩解特殊力学性质

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