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thermal element的中文,翻译,解释,例句

thermal element

thermal element的基本解释
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热敏元件, 热元件, 熔丝

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The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

结果表明:合金元素V和Cr对Ti40合金室温力学性能、蠕变行为和组织的影响具有相似性,即随V和Cr含量的降低,合金室温综合力学性能变化不明显、抗蠕变能力减弱、组织粗化:这与V和Cr同属于β稳定元素、且原子半径都小于Ti原子有关;而V和Cr对于热稳定性能的影响则完全相反,V含量的增加或Cr含量的降低含金热稳定性能优化,其主要原因可能与V属于同品型β稳定元素而Cr属于共析型β稳定元素有关。

So the braking prescription should be performed strictly, furthermore, the sudden and urgent braking should be avoided to the best of our abilities.In the end, the thermal fatigue lives were evaluated by the finite element method. It was proved that the thermal fatigue life of improved steel (ZG35CrMoRE) was higher than that of the formers. It was also found that the quantitative evaluations of the thermal fatigue lives of brake disc were acquirable, by putting the equivalent plastic strain, which was analyzed with finite element methods, and the material mechanical property parameters into the formula of Manson-Coffon to calculate its lives. Therefore, theoretical method can be provided to develop new brake disc steel and to prolong its lives.

为了进一步提高刹车鼓的使用寿命,对新试制的钢种进行了热疲劳寿命评估,验证了改进后的钢种在相同的使用工况下具有更高的热疲劳寿命;评估结果还表明利用有限元数值分析计算相应的等效塑性应变,结合材料力学性能参数,代入Manson-Coffin热疲劳寿命公式可以对刹车鼓的热疲劳寿命做出定量评估,从而为刹车鼓用钢的研制和刹车鼓寿命的提高提供了理论依据。

Incurrent research, aiming at the rupture problem engendered in the shooting process of acertain 5.56mm automatic rifle, the strain and stress distributions on the cartridge caseunder the action of axial pull have been analyzed. Based on the theories of elastic-plasticmechanics and contact mechanics, a mathematic and physical model of the cartridge-caseand chamber system has been set up; and based on the platform of the general softwarepackage APDL of ANSYS for finite element analysis, a parameterized model of thecartridge-case and chamber system has also been established. The method for nonlinearFEA has been adopted to analyze the stress distribution on the entire cartridge-case andchamber system, and the method of contact element has been employed to investigate thecontact stress between the cartridge case and chamber, and then the influences of frictioncoefficient and locking space on the static and dynamic stress and strain response of thecartridge case and chamber to the action of power gas have also been discussed. On thebasis of a lot of numerical tests, a kind of element Plane13, which is concentrated incoupled computation of heat and construction, has been used finally to simulate thetransient response of the cartridge-case and chamber system to the power gas. Throughloading the temporary thermal characteristics of explosive gas in the procedure of emulate, the corresponding transient thermal stress distributed on the entire system under thecombined load of transient thermal stress and transient pressure has been obtained. Owingto these comprehensive considerations, the numerical results obtained in this paperrepresent the actual situations comparatively exactly.

本文针对某5.56mm自动步枪在工作中出现断壳的问题,分析了弹壳在轴向拉力作用下的应力应变;基于弹塑性力学及接触理论,建立了弹壳弹膛系统的数学、物理学模型,在通用有限元ANSYS软件的参数化建模工具APDL平台上,建立了弹壳弹膛系统的参数化模型;采用非线性有限元法计算了弹壳弹膛系统的整体应力,引入接触单元法分析弹壳和弹膛的接触压力,探讨了在不同的摩擦系数和不同的闭锁间隙对弹壳弹膛静、动态响应的影响;本文进行了大量的尝试,最后确定采用热、结构耦合单元Plane13,在计算中加载了火药气体的温度历程,成功的获得了弹壳弹膛系统在瞬态的热载荷和瞬态的压力载荷同时作用下弹壳弹膛系统的热应力数值解,考虑因素全面,比较真实的反映了弹壳弹膛系统在火药气体压力和热载荷下作用的情况。

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