1、

The steel in the service process is often subject to strong winds, earthquakes, etc. The role of repeated load may lead to structural members repeatedly into the plastic state, so the plastic fatigue damage or even rupture.

而钢结构在服役过程中经常会受到强风、地震等重复荷载的作用,可能会导致结构构件反复进入塑性状态,从而发生塑性疲劳破坏甚至断裂。

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2、

Test method for tension& tension fatigue of fiber reinforced plastic laminates

GB/T16779-1997纤维增强塑料层合板拉-拉疲劳性能试验方法

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3、

Due to their high strength, good fatigue strength and corrosion resistance, more and more difficult-to-cut material such as carbon fiber reinforced plastic ( CFRP), titanium alloy and aluminum alloy are used in large components in aerospace industry.

碳纤维增强复合材料、钛合金和铝合金等材料因具有高强度、良好的抗疲劳性和耐蚀性等优点,已广泛应用于航空航天领域。

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4、

Using 2-D finite element method, authors developed an analysis program package, including tem-perature field, thermal elastic-plastic, creep, thermal fatigue and computer drawing.

作者编制了二维温度场、热弹塑性、蠕变、热疲劳以及计算机绘图的有限元分析程序包。

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5、

The results show that hot-forged cast dies take thermal wear, plastic deformation, thermal fatigue, impact fatigue fracture and brittle fracture as predominant failure patterns.

结果表明,精铸热锻模的主要失效形式为热磨损、塑性变形、热疲劳裂纹、冲击疲劳破断和脆性断裂。

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6、

Even single-crystal materials have excellent thermal shock resistance, long fatigue life, high temperature creep resistance and medium temperature in the plastic.

由定向凝固技术制备的定向组织、甚至单晶材料具有优良的抗热冲击性能、较长的疲劳寿命、较高的蠕变抗力和中温塑性。

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7、

Further studies show that repetitive stress induced y →ε martensitic transformation and its reverse transformation in the cyclic course can enhance the fatigue life of Fe-Mn-Si shape memory alloy by reducing crack-tip stress, restraining plastic sliding deformation and delaying the formation and extension of microcracks.

循环过程中的应力诱发马氏体正、逆相变及其相变伪弹性能降低应力集中,抑制塑性滑移变形,减少微裂纹形成的几率,从而提高Fe-Mn-Si形状记忆合金的应变疲劳寿命。

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8、

Roughness on the metal specimen polished surface will be induced when it yields plastic deform or fatigue damage for its interior microscopic crystal grain slip dislocation, and this is very different when it yields elastic deform.

与仅仅承受弹性变形时不同,当金属试件承受塑性变形或发生疲劳损伤时,内部微观晶粒滑移位错等会导致表面粗糙化。

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9、

the plastic strain is carried either by shear bands only, or by shear bands and deformation bands, in the specimens fatigued under strain control. consequently, fatigue cracks nucleated either along shear bands or along deformation bands.

在应变控制疲劳样品中,塑性变形既可由剪切带来承担,也可以由剪切带和形变带共同承担,进而疲劳裂纹分别沿剪切带或形变带萌生。

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10、

The Measurement of All Alloy Composite Plastic Strain in Low Cycle Fatigue

铝合金复合材料疲劳过程塑性变形的跟踪测量

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11、

After the wheel running many times on the rail, the plastic deformation on the rail would accumulate and the surface of rail would fatigue.

在列车的多次运行过程后,这样的塑性变形会积累,以至疲劳破坏。

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12、

Expression for fatigue crack life is set up which takes energy of plastic deformation for crack propagation as the damage variable.

建立以裂纹扩展塑性变形能为损伤变量的疲劳裂纹寿命表达式。

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13、

The method accepts measured time histories from strain guage rosettes as inputs, calculates the elastic plastic stresses and strains using a cyclic plasticity model, and then estimates the fatigue life from several critical plane damage models.

该方法以实测的应变计响应作为输入,通过一个循环塑性模型计算测量点的弹塑性应力应变分量,然后用多种多轴临界面疲劳损伤模型计算寿命。

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14、

Fiber reinforced plastic has high mechanical strength, especially fatigue durability, and its performance will not be debased obviously under the repetitious outside force.

纤维增强塑料不仅具有很高的力学强度,特别是耐疲劳性,在重复的外力作用下,材料的性能不会明显降低。

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15、

The numerical value simulation and analysis are conducted for the welding deformation, residual welding stress and fatigue test stress of hydraulic torque converter by using the thermo-elastic plastic finite element method and etc.

采用热弹塑性有限元等方法,对液力变矩器的焊接变形、焊接残余应力和疲劳试验应力进行了数值模拟和分析。

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16、

To reveal the thermal-mechanical fatigue mechanism more clearly, the time-dependent component ( Creep) and time-independent component ( pure plastic deformation) of the inelastic component should be taken into account separately.

对于热机械疲劳过程中塑性应变分量中的时间相关部分(蠕变)和非时间相关部分(纯塑性变形)应当分别进行考虑,才能对该合金的热机械疲劳行为有更加准确的认识。

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17、

Microscopic Plastic Deformation and Cycling Performance of Structural Steel Surface During High-Cycle Fatigue

高周疲劳钢表面微观塑性变形行为双循环特性

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18、

netty thermal fatigue crack will occurs when two principal stress and two principal plastic strains are approximately equal to each other.

两个主应力的值和两个主塑性应变值相近时出现网状龟裂。

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19、

Its basic forms are rapture and fatigue, plastic deforming, wearing, holding-on, cold and hot fatigue, etc.

模具失效的基本形式有断裂与疲劳 、 塑性变形 、 磨损 、 咬合 、 冷热疲劳等.

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20、

Strain-fatigue properties of pearlite and tempered sorbite in a C-Mn eutectoid rail steel have been studied by fully reversed constant total strain amplitude and plastic strain behavior in strain fatigue process has been investigated.

用全反向恒应变幅试验方法,研究了C-Mn轨钢珠光体及回火索氏体的应变疲劳行为,探讨了塑性应变在应变疲劳中的作用。

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