弹塑性变形

• In this article , a new theoretical model on diametral growth ( or ballooning ) of coiled tubing ( ct ) under the action of an internal pressure is derived based on fatigue cyclic softening and elasticity and deformation plasticity theories
  根据疲劳循环屈服强度衰减模型和弹塑性变形理论，推导了连续油管在内压作用下的直径增长（鼓胀）的理论模型。
• Abstract : in this article , a new theoretical model on diametral growth ( or ballooning ) of coiled tubing ( ct ) under the action of an internal pressure is derived based on fatigue cyclic softening and elasticity and deformation plasticity theories
  文摘:根据疲劳循环屈服强度衰减模型和弹塑性变形理论，推导了连续油管在内压作用下的直径增长（鼓胀）的理论模型。
• Obtained pre - tight and in the work process pressure distribution , the frictional stress , the elastoplasticity distortion and the stress distributed cloud chart and so on , and has carried on the thorough comparison and the analysis to the result
  得到了施加预紧和工作过程中的压力情况,摩擦应力,弹塑性变形和应力分布云图等,并对结果进行了深入的比较和分析。
• Based on the analysis and calculation results , it is proven that geomembrane is an ideally impervious material . it has good performances in such aspects as impermeability , elasto - plastic deformation adaptability , resistance ability against erosion
  各种分析论证及其计算结果均证明土工膜是一种理想的防渗材料，具有很好的不透水性，很好的弹塑性变形能力，有一定的抗拉能力，能够承受施工应力和工作应力。
• The thesis had done the theories analysis in detail and built the relevant mathematics models aiming at the mechanics characteristic about the lodging of stalk , the elastic and plastic deform of stalk under the action of the transverse loads , the mechanics condition which causes stalk pushed , the relation between the speed of unit and the surface radius of ski , the relevant location between the thickness of the compressed stalk and action location of load , the relevant location between the mating device and plough , the coefficient of overturning soil under the thickness of the compressed stalk and so on . in addition , the computer aided analysis and simulating experiments in field were acted by choice
  本文对秸秆自倒伏力学特性；横向载荷作用下的茎秆弹塑性变形与秸秆被推倒的力学条件；机组作业速度与滑撬曲面半径的关系；秸秆压实厚度与加载作用点的相对位置；配套装置与犁体相对位置；秸秆压实厚度下的翻垡系数等，进行了较详细的理论分析并建立了相关数学模型。在此基础上，本项研究还选择性地进行了计算机辅助分析和田间模拟试验。
• With the focus on the structure and components character of plate metal / ceramics graded coating , this paper extends and improves the thermal elastoplastic analysis model of trilayered materials derived by suresh et al and builds the theoretical model of thermal elastoplastic stresses analysis of plate metal / ceramics graded coating , and this paper also analyzes the thermal elastoplastic stresses and deformation of metal / ceramics graded coating
  本文针对平板状金属陶瓷梯度涂层的结构和组成特征，推广和完善了suresh等人的三叠层材料的热弹塑性分析模型，建立了平板状金属陶瓷梯度涂层热弹塑性应力分析的理论模型，对金属陶瓷梯度涂层的热弹塑性应力和热弹塑性变形进行了分析。
• Under strongly random exterior excitation , most structures will undergo elastic - plastic stage and show hysteretic characteristics , the vibration of structure expresses nonlinear random feature . therefore nonlinear model must be utilized in order to describe the behavior of this kind of structure , also the theory and methodologies of nonlinear random vibration are necessary for analyzing their response
  许多工程结构在强烈随机外激励下都将进入弹塑性变形状态，表现出滞后特性，结构的振动表现为非线性随机振动，因此必须用非线性模型来描述结构，并用非线性随机振动的理论和方法来进行分析。
• A finite element numerical model for arch dam - gravity pier - foundation system was established to evaluate the effect of high gravity piers on the stress , deformation and anti - sliding stability of sizhai arch dam , taking the following factors into account , such as the possible elastoplastic deformation of foundation rocks and the nonlinear interaction between the interfaces of gravity pier - dam foundation , the joint surfaces beneath the right bank , and the interfaces of arch dam - gravity pier
  摘要为评价高重力墩对四寨拱坝的应力变形和抗滑安全的影响，建立了拱坝重力墩地基系统的有限元数值模型，其中考虑重力墩基础、右岸夹层和拱坝重力墩等交界面的非线性相互作用，以及基岩材料的弹塑性变形行为。
• On the basis of the previous achievements and the settlement observed data , considering the obvious creep characteristic , visco - elastic - plastic creep model , which reflects the saturated soft clay ' s nonlinear deformation characteristic , has been proposed in this paper , with the consideration of the primary and secondary consolidation settlement . the soft clay visco - elastic and visco - plastic deformation is also depicted respectively
  针对具有明显流变特性的饱和软粘土，在总结前人研究成果和整理沉降实测资料的基础上，把主次固结沉降结合起来考虑，提出了反映其非线性变形特性的粘弹塑性流变模型，分别对土体的粘弹塑性变形进行描述。
• And the theoretical a nalyses done in this paper are listed below : first , the experimental data on the members of varied parameters under torsion demonstrate the general rule of the deformation while the tubular is under torsion . the paper establishes three phases of the deformation of the tubular under torsion , namely , the elastic deformation , the elastic - plastic deformation , and ultimate failure . through regression analysis , a simplified method is proposed for calculating the capabilities of the tubular under elastoplastic torsion , and the formulary for bearing value , is also recommended as a reference in engineering design
  本文根据不同参数的构件受扭性能试验结果，研究了该结构受力变形全过程的基本规律，提出了受钮全过程的三个工作价段，即弹性变形阶段，弹塑性变形阶段和极限破坏阶段，经分析回归得到扭转全过程弹塑性的简化分析方法及承载力计算公式，可供工程设计参考；同时根据本文的弯扭试验结果以及对离心钢管混凝土构件进行的理论分析，推导了弯扭试验相关承载力的关系。