查询词典 fatigue strength

The damage represents complex mechanism. In this research based on T300/HT3 laminate structure, fatigue life is predicted phenomenologically, dealing mainly with in-plane stresses without accounting for out-of-plane failures such as craze. Fatigue modulus, based on damage mechanics, is used as a physical parameter which helps to describe the basic fatigue behaviors of unidirectional laminates and obtain expressions for cumulative damages defined by strains and stress. Based on some typical fatigue test data for unidirectional composite laminates, residual modulus sequence is found out.

本文以T300/HT3复合材料层压结构为研究对象，从唯象的观点出发，以损伤力学为基础构造损伤函数，考虑了剩余刚度和应变比率对复合材料的疲劳性能的影响，以这些变化着的机械性能作为损伤变量，建立了复合材料的疲劳损伤模型，基于层压板拉—拉疲劳试验数据，拟合出损伤模型中的参数，从而得到层压板拉—拉疲劳损伤变化规律，并建立损伤变量与内部损伤及疲劳寿命的联系，从而预测常幅应力作用下疲劳寿命。

So it is necessary to study fatigue damage and predict the fatigue life of guyed mast in order to provide important basis for guyed mast on evaluation of fatigue residual life and proposition of new method of fatigue damage detection.

因此有必要进行桅杆结构的疲劳损伤分析及疲劳寿命预测，为桅杆结构疲劳剩余寿命评估以及疲劳损伤监测新方法的提出提供重要依据。

The rationality is discussed that fatigue life and fatigue crack growth rate determined in impact fatigue testing are used as a measure of fatigue cracking resistance of hot drop-forging die steel.

本文探讨了用冲击疫劳试验测定的疲劳寿命和疲劳裂纹扩展速率衡量热锤锻模材料疲劳抗力的合理性。

Music alcohol mechanism of anti-fatigue: Nano-peptide can promote aerobic metabolism, the rapid removal of excess lactic acid in muscles, faster removal of fatigue; when fatigue or liver disease, the other blocked amino acid metabolism, and branched-chain amino acids in muscle tissue can be metabolism, provide energy as the material, nano-peptide can be slowed down muscle protein breakdown and damage the body to ease the friction, and added the supply of glycogen after exercise, play the role of anti-fatigue.

酒乐的抗疲劳机理：纳米肽可促进有氧代谢，迅速清除肌肉中过多的乳酸，较快清除疲劳；当肝脏疲劳或病变时，其它氨基酸代谢受阻，而支链氨基酸可在肌肉组织中代谢，作为提供能量的物质，纳米肽可减缓肌肉蛋白的分解和肌体损伤，缓解内耗，并补充运动后糖原的供给，起到抗疲劳的作用。

the 160 women judoists are tested for mental fatigue and personality tests, and the paper tries to reveal their situation of mental fatigue, personality characteristics, and the relationship between them.it is analyzed that chinese elite judoists have no severe mental fatigue; judoists' negative evaluation on emotional/physical exhaustion and sport increase significantly one week before competition than two months; among personality factors, excitability predicts the decrease of achievement and emotional/physical exhaustion reliably on negative; the stability predicts sport on negative; tension predicts emotional/physical exhaustion on positive; adaption and anxiety in dimension personality predicts in positive both in the decrease of achievement and emotional/physical exhaustion and internal extraversion does them in negative; health personality in applied dimension personality predicts in negative in the decrease of achievement, emotional/physical exhaustion and negative evaluation of sport when mental fatigue, stability and sensitivity predicts the decrease of achievement in negative; only internal extraversion in dimension personality predicts the decrease of achievement and emotional/physical exhaustion in positive.

摘 要：以160名女子柔道运动员为被试，进行运动员心理疲劳以及人格测试，并尝试揭示女子柔道运动员的心理疲劳状况、人格特征以及二者之间的关系。分析得出：我国优秀柔道运动员心理疲劳程度并不严重；运动员在临赛前一个星期较赛前二个月情绪/体力耗竭以及运动的负评价显著提高；人格因素中的兴奋性对成就感的降低以及情绪/体力耗竭两维度均有可靠的负向预测作用；稳定性对运动的负评价维度具有可靠的负向预测作用；紧张性对情绪/体力耗竭有可靠正向预测作用；次元人格中适应与焦虑对成就感的降低以及情绪/体力耗竭均有可靠正向预测作用，内外向性对成就感的降低、情绪/体力耗竭以及运动负评价都有可靠负向预测作用。应用性次元人格中健康者的人格对运动员心理疲劳的对成就感的降低、情绪/体力耗竭以及运动负评价均有可靠的负向预测作用；稳定性、敏感性对临赛前成就感的降低维度的变化有可靠的负向预测作用；次元人格中只有内外向性对临赛前成就感的降低以及情绪/体力耗竭维度的变化有可靠的正向预测作用。

Through above numerical analysis of the TiN coating/substrate system, some typical rules about the fatigue failure are found:(1) the fatigue damage of a coating/substrate system appears first on the interface, then expands along the interface and to the substrate, and finally causes the coatings broken and spalled;(2) under the cyclic loadings of tangential sliding and radial extrusion, the equivalent plastic damage on the interface is mainly generated by the shear stress and the accumulated plastic contributed by the increments of shear stress. Thus the change of the shear stress is the main factor for the contact fatigue damages of coating/substrate system;(3) the frictional coefficient, external loading and coating thickness have some influence on the carrying capacity and contact fatigue life for a coating/substrate system.

通过对TiN涂层／基体系统的数值模拟分析，得到了涂层／基体系统疲劳失效的一些典型规律：(1)、涂层基体的初始损伤首先出现在交界面处，然后沿界面并向基体中扩展，最后导致涂层断裂而发生剥落失效；(2)、在切向滑动和径向挤压循环载荷作用下，交界面处的塑性损伤主要是由剪应力τ产生，塑性累积也是由于△τ的变化引起，说明循环过程中剪应力变化是影响涂层接触疲劳破坏的主要因素；(3)、材料摩擦系数、外界载荷大小以及涂层厚度都对涂层／基体系统的承载能力以及疲劳寿命都有一定影响。

Fatigue-creep rupture experiments of Nimonic 80A uniaxial specimen and hollow bolts at 550°C were carried out. Fatigue-creep process was simulated by ABAQUS using Chaboche-Nouaihas fatigue creep model. It is indicated that fatigue-creep rupture of hollow bolt is different from simple creep rupture.

该文对镍基合金Nimonic 80A进行了550℃下单轴及空心螺栓的疲劳-蠕变断裂实验，应用Chaboche-Nouaihas模型，用有限元软件ABAQUS模拟了空心螺栓的疲劳-蠕变过程。

The invention discloses a rotary bending corrosion fatigue test device. The device includes a rotary bending fatigue test device and a corrosion liquor supplying system; wherein, the rotary bending fatigue test device is used for mounting a test piece and applies bending load on the test piece during the process of driving the test piece to rotate and realizes the test on the fatigue data of the test piece. The corrosion liquor supplying system includes a liquor storage tank, a transfusion pump, a flow adjusting valve and a connecting pipeline. The corrosion liquor supplying system feeds the corrosion liquor to the test piece during testing in real time from an output opening.

本发明公开了一种旋转弯曲腐蚀疲劳实验装置，该装置包括旋转弯曲疲劳实验装置及腐蚀液供给系统，其中，旋转弯曲疲劳实验装置用于试件的装卡，并在驱动试件旋转过程中对其施加弯曲载荷，以及实现对试件疲劳数据的测试；腐蚀液供给系统包括储液罐、输液泵、流量调节阀及连接管道，腐蚀液供给系统通过其输出口实时向测试中的试件输送腐蚀液。

This research shall be obtain that ocean-sand motor shall have more compressive strength early, but later strength shall descend, by means of non-standard sand mixing sample is quite obvious. By means of 50% ocean-sand substitutes for river-sand to mix fine aggregate compressive strength early shall be risen 20%~30%; Adds slag to ocean-sand or a half of river-sand and ocean-sand to make motor test sample, Compressive strength、bending strength and tensile strength shall be according to slag additament, by means of. slag add itament substitutes for cement 40%~60% is most. But slag be able to substitute for cement is too enough, 1ater strength shall be descent.

由本研究可得知海砂拌和的水泥砂浆，其早期抗压强度较高，而晚期强度则有下降的趋势，其中以非标准砂拌和效果最为明显；若以50%海砂替代河砂做为拌和细骨材，其早期抗压强度约上升20%~30%；添加炉石於海砂或河砂、海砂各半的水泥砂浆，其抗压、抗弯及抗拉强度，会随著炉石添加量增加而增加，其中以40%~60%炉石替代量为最佳，但是炉石替代量过高，晚期强度会下降；在相同水灰比状况下以海砂拌和水泥砂浆做比较，以非标准砂拌和有较高的抗压强度，其强度约比标准砂高10%左右。

The handtailor nourishes the tonic: Four team's members necessary, it is said can let the human who was already utterly exhausted become the vigor abundant medicine Sword eight: The generation seals gives the strongest god of death the title Alone blinkers eyeshade: The technical development bureau manufacture may unlimited absorb the spirit strength unceasingly the monster, the sword eight uses it to constrain own strength and to store up its spirit strength Shakes the spot: The anaesthetic, the spirit presses the low person so long as stains can remain unconscious, but does not have the function to the spirit strength excel in person Puts on/to collapse the spot: Strong effect anesthetic, even if the spirit strength excel in person also with difficulty resists The day treads gorgeously: So long as pours into the spirit strength to be able in the sky soaring, is the corpse soul unique precious stage prop Energetic body: The secret mobile most important special spirit has one above, thus can cut the soul knife the main body to force the extension to absorb obtains the embodiment Handcuff: May seal up criminal's spirit strength The secret is mobile: The explanation did not have temporarily, found said again Garrulous bee: The bee ninth generation teaches other people, in six brother younger sister's sixth human of bee tree top damask silk, after joins the punishment armed forces the given name which inherits from her great grandmother there Punishment armed forces: The secret mobile first division, is completely in five division's highest organizations.

特制滋养强壮剂：四番队的成员必备，据说能让已经疲惫不堪的人变得活力充沛的药剑八：世代封予最强死神的称号独眼罩：技术开发局制造的可以无限制不断吸收灵力的怪物，剑八用它来压抑自己的力量并将其灵力储存起来震点：麻醉药，灵压较低的人只要沾上一点就会昏迷不醒，不过对灵力高强的人没有作用穿点/崩点：强效麻醉剂，即使灵力高强之人也难以抗拒天踏绚：只要注入灵力就能在天空飞翔，是尸魂界独一无二的珍贵道具精神体：隐秘机动最重要的特殊灵具之一，能将斩魄刀的本体强制转摄其上从而得到具像化手铐：可以封住犯人的灵力隐秘机动：解释暂无，找到了再说碎蜂：蜂家第九代传人，六兄妹中的第六人蜂梢绫，加入刑军后从她曾祖母那里继承来的名号刑军：隐秘机动第一分队，是全部五分队中的最高机构。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。