在螺纹材料、尺寸、载荷都相同的情况下,三角形螺纹牙所受的剪应力最小,断裂载荷也比梯形螺纹和矩形螺纹高。
In the same material, dimension and load circumstance, the cut stress of the triangle thread is smallest. Its rupture load is higher than the echelon and rectangle.
最后,以高脚杯形挤压铸件作为大高径比挤压铸件的实例,对其挤压铸造过程中的温度场和应力场进行了模拟和分析。
At last, as the example of squeeze casting with large ratio of height to diameter, the temperature field and stress field of high-leg casting were simulated and analyzed.
本文作者运用弹性地基梁理论及《砌体结构设计规范》中关于墙梁设计的有关规定,通过控制墙端局部压应力,可直接推导出托梁高跨比的计算公式。
Calculation formula of height-span-ration of supported beam can be directly deduced through controlling local stress in the end of the wall beam.
介绍了高流态自密实砼的性能、配合比设计方法及其在中等强度等级预应力受弯拉砼构件中的应用试验及测试情况。
This paper introduced the characteristics of high dense fluid concrete, design of batching ratio, the experiment and test of bent concrete component in medium hardness prestress.
这些参数为索预应力、索垂度、拱矢高、拱竖向抗弯刚度以及索和拱的轴向刚度比。
These are prestress in cables, sag of cables, rise of arches, the vertical flexible stiffness of arches and the axial stiffness ratio between the cable and the arch.
对于相对较小的荷载,可以找到立体钢桁架及立体预应力钢桁架的经济高跨比范围。
For the relatively smaller loads, the economical height-to-span ratio scopes of space steel trusses and space prestressed steel trusses can be found.
本文利用大型有限元模拟软件ANSYS对大高径比柱形挤压铸件的温度场和应力场进行了数值模拟。
In this article, the large FEM software, ANSYS, was employed to simulate the temperature field and the pressure field.
实例计算结果表明,预应力组合梁的屈服荷载比普通组合梁的屈服荷载高,组合梁的弹性工作范围扩大了;
The results of this investigation show that the yield load of prestressed composite beams is higher than that of reinforced concrete composite ones, which widen the elastic area they behaved.
在高低周复合疲劳研究中采用了正交试验设计的方法,并以此为基础综合研究了低周应力、高低周应力比、高周循环次数和高周循环频率对复合疲劳寿命的影响及其机理。
Based on the orthogonal test design, this paper studied the effect of low cycle stress, high-low cycle stress ratio , high cycle number and high cycle frequency on complex fatigue life.
对于桩长和桩的长径比均小于25的嵌岩桩,侧阻力随桩顶荷载的增加而增大,且在高的应力水平下平缓增长,当达到最大荷载时达到试验最大值,其嵌岩部分侧阻力从上至下依次发挥。
When pile length and the ratio about pile length to pile diameter is less than 25, side resistance is aggrandized by increasing of the load, and gently added at high stress level.
下贝氏体组织在高应力磨料磨损下比相同硬度,或稍高硬度的回火马氏体组织具有较高的耐磨性,但在低应力磨损下表现为不利的作用。
Bainite has higher abrasive wear resistance than tempered martensite with equal or higher hardness in hard abrasion, but in reverse in soft abrasion.
研究结果表明,在塑性区掘进回采巷道引起的应力转移比在高应力的弹性区掘进回采巷道引起的应力转移要小得多,减轻水采矿压显现的关键是在低应力区掘进回采巷道和实行区段间交替回采。
The research results show that the stress change caused by excavating roadways in the plastic zone is much less than that in the elastic zone with high stress. The key for reducing mining press...
有机蒙脱土对沥青胶浆的疲劳性能的改善作用在高应力时比低应力更加明显。
Moreover, the improvement effect of silicate on fatigue of bitumen is better at higher stress than at lower stress ratio.
计算结果表明:整体浇注式包底的应力水平比砌筑式包底的高;
Calculation results indicate:the thermal stress of bottom structured of brick is higher than that structured of castable;
计算结果表明:整体浇注式包底的应力水平比砌筑式包底的高;
Calculation results indicate:the thermal stress of bottom structured of brick is higher than that structured of castable;
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