为此,采用等价应力法对有初始变形的井架进行结构分析。
An equivalent stress method for the structural analysis of derrick with initial deformation is offered.
初始变形和受荷变形均假定为正弦函数分布,并可按照需要进行应力修正。
Both initial and added deflection modes are simplified as trigonometric functions and the stress distribution can be revised if necessary.
残余应力的符号和大小在很大程度上取决于钢管在拔制工具中的初始变形率。
The magnitude and symbol of the residual stress greatly depends on the initial deformation rate of the pipe under drawing with the working tools.
如果一个触点在初始变形时即屈服,负载去除后,它将不能回复到原来的形状。
If a contact has yielded during the initial deflection, it will not return to its original shape when the load is removed.
本文根据骨缺损时硬脑膜在脑压作用下的弯曲变形特点,引入抗膨出特性参数:初始变形指数和蠕变指数。
The parameters of anti-protruding properties of dura and substitutes are introduced on the basis of constant creep solution of the dural deflection under the constant intracranial pressure .
目前在网壳结构设计中,初始缺陷是按照第一阶屈曲模态的L/300(L为结构跨度),对结构施加初始变形。
At present, in the design of reticulated shells, the initial deformation of the first buckling mode(the dimension is L/300) of the structure is introduced as initial imperfection.
初始效应包括重力和风——但在二次效应层面上,你就得考虑气温和水分变化,材料因负重导致的轻微变形。
Primary effects include gravity and wind - but at a secondary level, you have to think about temperature and moisture changes, the materials slightly deforming under load.
但是由于地下开采引起地表产生的移动和变形,破坏了建筑物与地基之间的初始平衡状态。
However, the displacement and deformation of surface ground by underground mining have destroyed initial equilibrium between the building and the ground.
研究表明在膜结构的找形阶段应适当地加大结构的初始预张力,以减小由于支座变形所造成的预应力损失。
It is found that the prestress should be increased to reduce the loss of prestress with the deformation of the support.
试验表明,颗粒破坏的数量随着剪切变形和侧限压力的增大而增多,与试样的初始密度却无直接关系。
It was found that the amount of the grains broke increased with the shear strain and confining pressure, independent of the initial density of the specimen.
隧道按埋深分类应考虑的主要因素之一是围岩的变形破坏方式,而后者与围岩的初始应力状态密切相关。
One of the important factors taken into account in the tunnel classification is the style of deformation and failure, which is related to initial stress state in wall rock.
讨论了横向剪切变形,曲板几何参数,铺层数,铺展方式和初始几何缺陷等各种参数变化的影响。
The effects played by transverse shear deformation, panel geometric parameters, total number of plies, fiber orientation, and initial geometric imperfections are studied.
变形速度对材料流动、初始屈服应力、流动应力影响不明显。
Deformation velocity has no obvious effect on the flow of material, initial yield stress and flow stress.
结果表明:增加冷却速率、预变形处理和晶粒细化有利于初始凝固组织中存在的非平衡组织的分散细化。
The results show that, increasing cooling rate, pre-deformation and grain refinement are useful for spreading of the non-equilibrium microstructure around the primary grains.
着重研究了周围压力、剪切排水条件、初始相对密实度对粉煤灰稳态变形特性的影响;
The influence of confining pressure and drainage shear condition and initial relative density for flyash in steady-state deformation characteristic were discussed.
先从梁柱节点受弯变形的机理入手,推导出钢框架梁柱焊接连接节点的初始刚度计算公式。
The formula calculating the initial stiffness of welded connection of steel frame was drawn according to bending deformation mechanism of joint zone of welded steel frame.
仿真结果表明这个小客车初始设计的耐撞性不足,某些零件的能量吸收特性和变形模式不合理。
The simulation results show that the original design has some problems with regard to crashworthiness. Some parts had inefficient energy absorbing characteristics and improper deformation mode.
将岩体中的结构面视为一种初始损伤,岩体变形参数通过岩块参数的损伤折减来确定。
Considering the structural planes as initial damage, damage mechanics is applied to analyze the deformation parameters of rock masses by discounting mechanical parameters of rock.
在恒载作用下,主缆的初始应变对桥面变形影响很大。
The results show that the main cable initial strain has great influence on the deformation of the bridge deck.
本文根据血管力学及生理特点,提出具有初始应力、有限变形的血管力学模型。
In the paper. the vessel mechanical model under intitial stress and sublarge intitial deformation in founded.
同时,初始应变速率和变形温度影响奥氏体晶粒尺寸和析出相的分布。
Meanwhile the initial strain rate and strain temperature affect the austenite grain size and distribution of precipitation phase.
结果表明:随着初始主应力方向角的增大,轴向残余变形由压缩状态的正值逐渐过渡到伸长状态的负值。
The results show that: with the initial principal stress direction angle increases, the axial residual deformation from the compression state gradually transits to the elongation.
测试数据为定量预测初始残余应力引起的加工变形奠定了基础。
The data obtained lay a basis for prediction of the machining distortion caused by the residual stresses.
在给定初始支撑强度的前提下,加大支架的让压变形量,提高支架承载能力,大大改善了矿工钢梯形支架控制围岩的效果。
After being set state load, optimized timbering adds support yielding deformation, increases the load-carrying ability and improves the effect of controlling the surrounding rock.
结果表明:在温变形的初始阶段,孪生为主要的变形机理和硬化机制。
It is demonstrated that twinning is the primary deformation mechanism and hardening mechanism at the initial stage of warm deformation.
初始弹性侧移刚度比对框支配筋砌块砌体剪力墙结构的薄弱层位置、弹塑性变形性能和破坏形态的影响较大。
The value of lateral stiffness ratio has significant influence on the place of weak story, elastic-plastic distortion and failure characteristic.
皮辊的橡胶弹性可以阐述为“橡胶在无永久变形的前提下重新恢复或获得初始的几何形状的能力”。
Re-silence property of a rubber cot can be explained in terms of "ability of a rubber cot to recover or regain its original geometry without any permanent deformation".
对在线测量的数据进行曲线拟合,求解出最大初始曲率、最大初始曲率对应的位置及最大变形量。
The maximal initial curvature and its relevant location and maximal distortion can be gotten by numerical curve fitting after on-line measurement.
L 坐标,建立了初始构形的大变形增量有限元方程。
Wmethod, the increment finite element equation of original formation on the T. L coordinate. was established.
本文通过数值模拟揭示了CONFORM连续挤压初始阶段金属的变形行为,这对于CONFORM连续挤压工程实践具有一定的指导作用。
This paper revealed the metal deformation behavior of initial extruding stage during CONFORM process, which have certain guidance role for CONFORM project practice.
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