采用塑性增量理论，建立了波纹管液压胀形的应力、应变数值计算方法，解决了波纹管液压胀形工艺的理论计算问题。
By plasticity increment theory, the stress strain numerical calculate methods of bellows bulge forming, solvers theory calculating problems of bellows bulge forming technology are put forward.
本文给出了计算钢压杆弹塑性稳定极限承载力的有限条塑性系数增量初应力法。
The paper presents a numerical method, named the Finite Strip Plasticity Coefficient Increment Initial Stress Method, to solve the elastoplastic stability ultimate loads of steel columns.
通过增量理论弹塑性有限元计算，对比分析了带和不带加载孔ct试样J积分之间的差异。
The differences of J-integral between CT specimens with and without loading holes have been compared and analyzed by means of incremental theory elastic - plastic finite element calculations.
本文采用三维弹塑性增量变塑性刚度有限元法计算地下洞室围岩稳定。
In this paper, the elastoplastic incremental finite element method with variable plastic stiffness is used to analyse the surrounding rock stability of underground openings.
此外，还对FLAC - 3d内嵌的本构模型深入研究，塑性流动发生时塑性应变增量对应力增量的修正。
In addition, the constitutive models included in FLAC-3D are deep into research, and the stress increments are corrected in terms of the plastic strain increment while occurrence of plasticity flow.
类似于塑性流动分析方法，定义了增量弹性应力应变关系。
The incremental elastic stress-strain relation is derived. The process is similar to the analysis in plastic flow.
从变分不等式出发，结合有限元，建立了按增量求解薄板弹塑性弯曲问题的线性互补方程。
Finite Elemnent-Linear Complementary Equation is established for analysis of elastoplastic thin plate-bending problems based on variational inequality principle.
从理论上说明塑性应变增量的方向不仅与应力的主方向有关，还与应力增量的方向有关。
The theoretical result shows that the direction of plastic strain increment is determined by the direction of principal stress and stress increment.
它与夸脱理论相结合，得到了在角点处的塑性增量应力应变关系，在角点上剪应力增量与剪应变增量间是单值确定的。
Then the increment stress - strain relation of plasticity on the corner of the yielding surface is presented by the Koiter theory which is connected with the above hardening function.
文末对结构整体的载荷-位移行为的分析，揭示了周期载荷作用下的两种结构响应模式：1接触塑性安定；2增量破坏。
Analysis of synthesis of response presented at the end of the paper reveal two modes of structural responses: 1 contact plastic shakedown and 2 progressive failure.
若规定简单拉伸时两种屈服条件重合，则两者的等效塑性应变增量的相对偏差为15 .5 % ；
Their relative deviation of the equivalent plasticity strain increments was 15.5%, assuming that the two conditions coincide under simple tension;
采用增量变塑性刚度迭代法，求解非线性动力方程。
The incremental variable plastic stiffness iteration method is employed to solve dynamic equations.
利用有限元方法模拟时，韧性断裂准则既可以应用到完全耦合的弹塑性损伤模型的增量方法中，也可以应用到一步有限元逆算法中。
When adopting FEA to model, DFC could not only apply into incremental approach with a fully coupled elastic and plastic damage model, but to one step inverse approach.
堆石体本身为弹塑性结构，应力和变形呈非线性关系，故确定计算方法采用增量有限元法；
Rockfill is elastoplastic itself and its stress-strain relationship is nonlinear. So the calculation method must be incremental FEM.
本文采用塑性应变分量的分部屈服概念，提出了适用于增量法计算的分部屈服加载准则；
This paper, adopting the Concept of divitional yield of plastic strain components, proposes a loading criterion of divitional yield, which is suitable for incremental numerical method.
此文针对塑性成形有限元分析大增量加载的收敛性困难，推导了用于板料成形弹塑性有限元分析的牛顿一致迭代公式。
In this paper, facing the convergent problem of plastic forming using large incremental step, we deduced the iterative formula used in analysis of elastic-plastic plate forming finite element method.
本文采用有限元法和增量理论对小位移小应变的弹塑性接触问题进行分析。
In this paper, the contact problems of small displacement and strain have been analysed by finite element method and incremental theory.
作为弹塑性求解问题的简化方法，极限分析比传统的弹塑性增量计算效率更高、更实用。
As a simplified method for elastoplastic analysis, limit analysis method is more efficient and practical than the traditional increment method.
塑性应变增量方向与应力路径没有很大关系，以等塑性体应变为硬化参数的屈服面形状也是椭园。
The direction of plastic strain increment is nearly independent of the stress path. The shape of yield sur- face on hardening e…
塑性应变增量方向与应力路径没有很大关系，以等塑性体应变为硬化参数的屈服面形状也是椭园。
The direction of plastic strain increment is nearly independent of the stress path. The shape of yield sur - face on...
考虑到土体的非线性性质，本文采用了弹塑性方法中的增量初应变法对耦合方程进行解答。
The nonlinearity of soil should take into account, so the article adopts "initial-stress" finite element approach to resolve the coupling formulation.
本文以变刚度的增量原理为基础，论述了复合材料组合网架的弹塑性设计方法。
This paper, basing on the principle of the changing rigidity, discusses the clastic-plastic designing method of the complex material grids.
通过在屈服面的切线方向增加一项非共轴塑性应变增量，即可实现对非共轴现象的反映。
In order to reflect the non-coaxial phenomenon, a non-coaxial plastic strain rate term is added to the tangential direction of conventional constitutive model's yield surface.
该方法基于塑性增量理论，应用塑性成形过程的体积不变假设和弯曲过程的平截面假设。
The proposed method is based on the incremental theory, volume invariance and planar cross_section are assumed.
基于分段线性塑性理论和断裂力学理论，提出了一种二维的全量形式和增量形式的粘性裂纹的本构模型。
On the basis of piece-wise-linear plasticity and fracture mechanics, this article presented a 2-dimensional holonomic and nonholonomic constitutive model for cohesive crack of concrete-like materials.
平砧锻造是塑性大变形问题，本文采用随动坐标系跟踪流动质点，利用能量法分步计算质点位移增量、等效应变场等，然后叠加。
To improve the accuracy of large floating point number calculatation, an iterative approach of inverse transformation for Gauss projection with floating coordinate system is presented.
平砧锻造是塑性大变形问题，本文采用随动坐标系跟踪流动质点，利用能量法分步计算质点位移增量、等效应变场等，然后叠加。
To improve the accuracy of large floating point number calculatation, an iterative approach of inverse transformation for Gauss projection with floating coordinate system is presented.
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