Fuzzy judgement method was provided to predict creep fatigue life of turbine blades. Experimantal investigation has shown that the method is feasible and effective.
根据蠕变产生的机理,将工程模糊综合评判方法应用于发动机涡轮叶片蠕变寿命预测,并通过实例验证了该方法的可行性和有效性。
The shortness of creep loading time and the faster frequency of fatigue load change induce general elastic strain stage to end and delayed elastic strain platform stage to begin under shorter strain.
因蠕变加载作用时间缩短和疲劳载荷变化更频繁,导致在较小的应变下结束普弹应变阶段并进入延迟弹性变形的平台应变阶段。
They are mainly concerned with the tensile and compressive behavior, energy absorption, dynamic impact, failure criterion and constitutive relation, creep, fatigue and fracture of these materials.
这些工作主要讨论了金属泡沫材料的拉伸、压缩、能量吸收、动态冲击、失效准则、本构关系、蠕变、疲劳和断裂等力学性能。
Then, constitutive equations are written for plastic, creep and fatigue damage phenomena.
从而建立了塑性、蠕变和疲劳损伤现象的本构方程。
The study work is focused on the effect of temperature upon mechanical properties, creep, initiation and propagation of fatigue crack for the valve material.
着重温度对气门材料的力学性能、蠕变和疲劳裂纹形成与扩张的影响等问题进行分析和研究。
The paper also presents the low cycle fatigue life and creep life's quantificational method of steam turbine's main stop valve and control valve, and applied examples.
提出了汽轮机主汽阀和调节阀阀壳低周疲劳寿命和蠕变寿命的定量设计方法,并给出了应用实例。
The mechanical characteristics of OPGW are very important to OPGW safe-running as earth wire, especially the tensile strength, creep and fatigue.
OPGW的力学特性对于OPGW作为地线安全运行很重要,尤其是拉断力、蠕变、振动疲劳特性。
The results show that fatigue, creep and oxidation damage always develops simultaneously during low cycle fatigue at high temperature.
试样的微观断口分析显示了在高温应变疲劳试验中同时存在疲劳、蠕变和氧化损伤。
The example demonstrates the capacity of the separation of the fatigue-damage and the creep-damage, and the ability to predict the fatigue life with the creep of the polymethylmethacrylate.
算例结果表明,损伤分离法可以分离蠕变疲劳产生的蠕变损伤和疲劳损伤,很好预测疲劳和蠕变共同作用下的疲劳寿命。
Semiconductor analysis with ANSYS tools often incorporates nonlinear behaviors, including package warpage, solder joint creep, fracture in through-silicon-via designs, fatigue and delimitation.
利用ANSYS工具,可以分析半导体的非线性特性,其中包括封装变形、焊接点蠕变以及过孔设计中的断裂、疲劳和层间开裂。
The mixed fatigue and creep morphology reflected the influence of their interaction at high temperature.
裂纹的疲劳蠕变混合形貌反映了高温下交互作用的影响。
A creep and fatigue damage model has been presented to explain fatigue test results. There is excellent consistency between the predicted and experiment data.
本文的算例表明,所提出的修正模型能够成功分离出试验结果中的蠕变损伤和纯疲劳损伤。
High temperature fatigue creep test of 316l stainless steel under 1-step and 2-step load was conducted, the influence of the load history on material behavior was investigated emphatically.
进行316L不锈钢在单级和两级载荷作用下的高温疲劳蠕变试验,研究了载荷历程效应对材料行为的影响。
The creep-fatigue properties of 308L ste el weld after post-weld heat treatments (PWHT) were investigated.
研究308L焊缝经过焊后热处理其蠕变-疲劳的性质。
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.
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。
Topics include: elasticity, viscoelasticity, plasticity, creep, fracture, and fatigue.
主题包含:弹性、黏弹性、塑性、潜变、破断及疲劳。
The property of GH169 alloy steel in condition of creep-fatigue interaction is studied. The result shows that the creep-fatigue interaction is beneficial to service life.
本文通过试验,对航空涡轮盘用材料GH169合金的蠕变— 疲劳交互作用行为进行了研究。结果表明,在本文试验条件下,GH169合金的蠕变—疲劳交互作用对寿命有利。
On the basic of macro-micro analysis of fracture a new fatigue-creep interaction map called first type of interaction map was constructed.
在宏观与微观分析相结合的基础上建立了第一类断裂特征图。
A criterion of crack growth at interaction of fatigue and creep is presented.
在互动的疲劳和蠕变裂纹扩展的判据。
The results show that the polyurethane vibration isolator defeats the rubber isolator at fatigue life, creep, carrying capacity, carrying region and isolation performance, etc.
结果表明,聚氨酯隔振器在寿命、蠕变、承载能力、承载范围、隔振性能等方面均优于橡胶隔振器。
In addition, a set of creep-fatigue controlling device which ADAPTS for RD_2-3 tester is designed and a calculative formula of limit load PL of C-shape specimen is discussed.
另外,作者设计了一台适合于RD_2——3型试验机的蠕变-疲劳控制装置;并讨论了C形试样极限载荷p_l的计算公式。
In addition, a set of creep-fatigue controlling device which ADAPTS for RD_2-3 tester is designed and a calculative formula of limit load PL of C-shape specimen is discussed.
另外,作者设计了一台适合于RD_2——3型试验机的蠕变-疲劳控制装置;并讨论了C形试样极限载荷p_l的计算公式。
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