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According to the results of the study, the prestressed concrete structure can also be designed with well ductibility as long as appropriate design was done, and it can fully withstand the impact load.
从研究的结果来看,预应力混凝土结构只要设计合理,预应力混凝土结构也完全可以设计成延性的,也完全可以承受冲击荷载。
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The results of simulation show that three-winding single-phase capacitance motors with wye-connected drive ventilated machine load can proceed to AC braking to realize fast stopping. The capacitance number of changes can regulate system braking stopping time. When capacitance is certain, can establish the resistance to limit the electric current and electromagnetical torque in stator circuit during the braking process, regulating braking stopping time.
仿真结果表明,Y接法的三绕组单相电容电动机带通风机负载时可以进行交流制动实现快速停车;通过改变电容的数值可以调节制动停车的时间;当电容一定时,可以在定子电路中串联电阻来限制制动过程中的电流和电磁转矩,调节制动停车的时间。
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A vibration suppressing approach for the rolling mill drive system was put forward, which adopt the complex compensative control based on H(subscript ∞) filter and load observer, on the analysis of a two-mass electrometrical model with two-loop drive and engineering practice.
对双环传动的轧机两质量模型进行理论分析并结合工程实际,提出了一种基于H滤波器和负荷观测器复合补偿的轧机主传动振动抑制新方法。
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For a doubly-clamped beam under an electrostatical load, the bias is analyzed, and two analytical expressions about pull-in voltage and critical center displacement are firstly proposed with the stretching along its length direction taken into account.
本文分析了考虑轴向拉伸后的两端固支梁的静态工作点,且首次建立了考虑轴向拉伸后两端固支梁的吸合电压及临界吸合时其中央归一化位移的解析表达式。
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In the process of developing electrostrictive microfeed driver, it was found that the driving force in the expansion direction of the electrostriction has effect on electrostriction expansion, which increase along with the load.
通过对电致伸缩微位移驱动器的实验研究发现,伸长量方向的力对电致伸缩材料伸长量的影响是随着力的增加而增大,从微观上定性地解释了实验结果。
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So, EME can be applied to forecast the rock burst in coal mine. Studies show that EME usually becomes stronger with the increase of load and the rate of deformation.
由于煤岩冲击破裂过程中,裂缝的形成和颗粒的摩擦会产生电磁辐射,因此,可采用电磁辐射技术来预测煤矿的冲击矿压危险。
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The experimental result shows that under a warm temperature and large load, the initial features of structure and fabric disappear finally, and a small circle girdle fabric with fine equigranular grains appears, and a mult-maxima fabric developes to some extent.
结果表明,在较高的温度和大载荷下,样品经反复压缩-退火,其初始组构特征消失,代之以小环状组构和细的、等粒的晶体,某些情况下发展为多极大型组构。
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Experiment result demonstrates that its surface isn't oxidized by contrast with the stainless steel at 1 000 ℃. Under the single pulse high voltage, the film shows feeblish discharging characteristic after the bombardment of the high energy microparticles at hundreds times. This can increase the voltage holding capability and reduce the dynamic load of pulse power.
实验证明:在高达 10 0 0℃的温度下,相比不锈钢材料,薄膜表面几乎不被氧化;在单次脉冲高压作用下和在经受数百次高能微粒子轰击后,仍呈现出弱放电特征,既提高了耐压能力,又降低了脉冲电源的动态负载
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In this paper, based on the knowledge about the change in the microstructures and mechaniacal properties of the cast irons with the influence of temperature, stress and thermo—mechanical circulated load in working cycle of ingot mould, the temperature and stress fields have been analysed by means of thermo-elastic-plastic finitive element, and futher, the behavior of thermal stress factors in every working cycle of the mould have been investigated, by which principles for optimum design of ingot mould's structure has been put out.
本文以钢锭模一个使用周期内的温度场、应力场及热一力循环载荷作用下铸铁的组织结构和力学性能的变化规律为基础。利用热弹塑性有限元法对钢锭模使用过程中的温度场及应力场进行了分析,并进一步研究了钢锭模在每个使用周期间的热应力参数的变化规律,提出了钢锭模结构优化设计的基本原则。
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Secondly, the paper carries on the destruction processes and the stress distribution situation numerical simulation of the concrete three point bending specimen with bias crack under static load function,, and analyze specimen crack expansion and the destruction mechanism, obtain the reason that the crack expanding flectional way is because the material nonuniformity, in the same time, from the specimen destruction process chart we can see that the crack bias degree has some influence on the crack expansion way.
其次论文对含偏置裂纹的混凝土三点弯曲试件在静态载荷作用下的破坏过程和应力分布情况进行了数值模拟,并对试件的裂纹扩展和破坏机理进行了分析,得出裂纹扩展的曲折性是由于材料不均匀性所引起的,同时从试件的破坏过程图中可以看出,裂纹的偏置程度对裂纹的扩展路径有一定的影响。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。