基于材料的循环塑性预测了疲劳裂纹扩展的门槛值。
Fatigue crack growth threshold is predicted based on materials cyclic plasticity.
提出了土体循环塑性模型有待进一步研究的若干问题。
Finally, Suggestions are made for future studies of soil cyclic plastic models.
简要归纳了循环荷载作用下土体本构特性和循环塑性模型需满足的力学条件。
The constitutive behaviors of soils under cyclic loads and the mechanical requirements for cyclic plastic models are briefly summarized.
利用有限元法，采用弹性理想塑性模型，对受对称面外弯曲的内压弯管进行循环塑性分析。
Cyclic plastic strains are analyzed for the pressurized elbow subjected to symmetric out-of-plane bending with finite element method (FEM) and the assumption of elastic-perfectly plasticity (EPP).
本文提出了一个数学表述简单，易于应用，描述循环塑性的能力及对材料的适应能力都较强的唯象本构模型。
This paper proposes a new constitutive model of cyclic plasticity. The moded is simpler and easier to use than others, and is has the strong capability of simulating materials behavior.
根据递增塑性破坏的强度准则，详细讨论了循环弯曲载荷下船体梁的非弹性变形性能。
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.
废料损失最小化：浇道、闸道和废料通常可以重新研磨。循环热塑性塑料可以注塑成型。
Minimum scrap loss. Runners, gates, and scrap can usually be reground. Recycled thermoplastics can be injection molded.
本文对局部经受高温热循环构件的热弹塑性应力进行了有限元分析。
In this paper, the thermal elastic-plastic stresses of the components which underwent local high temperature cycle were analyzed by FEM.
对钢桥面铺装沥青混合料材料进行循环荷载下的弹塑性分析。
The elastoplastic properties of asphalt concrete of steel deck pavement are analyzed under cyclic load.
热疲劳抗力主要取决于材料的高温屈服强度，在强度、塑性及循环热稳定性取得适当配合时最大。
The thermal fatigue resistance mainly depends on the high temperature yield strength and will become maximum, if the strength, plasticity and cycle thermal stability are in an adequate combination.
研究结果表明，弹塑性有限元分析法预测的寿命偏低，由残余应力可以较准确地确定最大应力应变循环。
The result shows that predicting life by elasticity-plasticity finite element analysis is low and the maximal stress-strain cycle can be calculated accurately by the residual stress method.
在应变疲劳曲线上，弹性线和塑性线的交点随弹簧钢回火后硬度的升高而向低循环寿命移动；
The point of intersection of elastic line and plastic line moves toward the low cycle life with the hardness of the spring steel raised after tempering from the strain fatigue curve.
提出了适用于长期循环荷载作用下粉细砂累积变形计算的等效黏塑性本构模型及数值模拟方法。
A new constitutive model, namely equivalent viscoplastic model, adaptive to cumulative deformation computation of sandy silt under long-term cyclic loading is proposed.
结果表明，疲劳裂纹是在残余拉应力和循环压应力作用下萌生和扩展的，压塑性变形是裂纹萌生和扩展的必要条件。
The result shows: the local residual tensile stress and cyclic compressive loading thrust fatigue crack initiation and propagation in the size of compressive plastic zone.
基于内时塑性本构方程对循环松弛应力-应变曲线进行了数值模拟，取得了与实验相吻合的结果。
The calculation results showed that the constitutive relationship has accepted for the cyclic stress relaxation under strain-controlled tests.
喷丸过程和随后的接触疲劳滚压过程同属在赫兹应力作用下的循环弹塑性应变过程。
Both shot peening and contact rolling belong to the cyclic elastic-plastic deformation process under the action of Hertz stress.
实验项目有等应变率拉伸、等应力蠕变和控制应变幅的等应变率塑性循环。
The experimental items of the tests are tension of constant strain rate, creep at constant stress, and strain controlled low cycle fatigue of constant strain rate.
本文分析了静载荷及循环载荷下的微塑性变形行为，认为振动时效动应力的选择应以材料的疲劳极限作为依据。
Analyzing the micro plastic deformation of metal material under static load and cyclic stress, the scientific basis for choice dynamical stress of VSR is provide.
阐述了观察到的两种7000系列合金在小塑性应变幅下循环软化，而在大塑性应变幅下循环硬化的现象。
The observed phenomenon that both 7000 series alloys tested soften cyclically at smaller plastic strain amplitude and harden at larger plastic strain amplitude is explained.
合金的塑性应变能密度受应变幅的影响且具有循环相关性；
The values of plastic strain energy density are affected by the plastic strain amplitude and change with the cycle numbers.
采用金属材料微元屈服极限随机分布模型，计算出每次循环产生的微观塑性应变，并与用单调拉伸试验确定的材料真实断裂延性联系起来。
Randomly distributed models of micro-plastic strains were used to calculate the micro-plastic deformation produced at each cycle of the steel under high cycle fatigue test.
岩石的不可逆塑性变形随动应变增加而增大，同时由循环荷载引起的损伤变形也逐渐增加。
Moreover, the irreversible plastic deformation of rock increased, and at the same time, the fracture deformation of rock gradually increased, which was produced by cyclic load.
通过塑性混凝土在单调和循环加卸载下的试验，对不同加卸载作用下塑性混凝土的强度和变形性能进行研究。
Strength and deformation were studied on plastic concrete in different loading ways through direct and cyclic loading and unloading testing.
采用盐浴加热循环淬火和高频感应加热淬火对T10A钢进行组织超细化预处理，然后在恒温压缩变形条件下进行超塑性研究。
The superplasticity research was carried out under constant temperature compression deformation for salt-bath cyclic quenched and high frequency hardened T10A steel.
在上海地区典型饱和软粘土不排水循环三轴试验的基础上，分析了影响软粘土塑性累积变形的主要因素：循环荷载的作用次数，初始静偏应力和循环加载动偏应力。
It was shown that the cumulative plastic strain depended not only on the applied cyclic stress and number of cycles, but also on the initial static deviatoric stress level.
在上海地区典型饱和软粘土不排水循环三轴试验的基础上，分析了影响软粘土塑性累积变形的主要因素：循环荷载的作用次数，初始静偏应力和循环加载动偏应力。
It was shown that the cumulative plastic strain depended not only on the applied cyclic stress and number of cycles, but also on the initial static deviatoric stress level.
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