1) second stress
2次应力
2) twice-prestressed composite beam
2次预应力组合梁
3) secondary stress
二次应力
1.
The off-specification of secondary stress of coke drum overhead gas line in delayed coking unit is analyzed.
分析了焦化装置焦炭塔顶挥发线运行时二次应力超标现象的产生原因,由于挥发线管道自重很大,易产生一次应力超标。
2.
In order to direct the remained ore recovery of pillars and treatment of the mined out area, the secondary stress change of ore pillar and wall rock at 420 and above levels in Suichang Gold Mine of Zhejiang Province is monitored by photoelastic stressmeter, and the long-term monitor-site for stability of mined-out area is established.
采用光应力计监测遂昌金矿 42 0及以上中段矿柱与围岩的二次应力变化 ,建立采空区稳定性长期观测网点 ,以指导矿柱的回收及空区处理。
3.
However, in the pressure vessel design codes, the thermal stress is identified as the secondary stress.
管道设计规范中所述的位移应力包括温差、端点位移等荷载产生的应力,而在容器设计规范中将温差引起的应力归为二次应力。
4) primary stress
一次应力
1.
It is easy for primary stress to exceed allowed specifications due to large pipe weight, and carbon steel pipelines suffer from severe corrosion resulted from increased amount of sulfur in feedstock.
分析了焦化装置焦炭塔顶挥发线运行时二次应力超标现象的产生原因,由于挥发线管道自重很大,易产生一次应力超标。
5) secondary stress
次生应力
1.
A new mathematical model for the coefficient of variable permeability affected by coal body, secondary stress & pressure in coalseam & a constitutive equation for gas migration are improved on the basis of the Secondary stress & deformation of coal body around boreholes in coalseam.
从煤层钻孔周围煤体发生的次生应力和变形出发,建立了受煤体次生应力、瓦斯压力等因素影响的煤体变透气性系数的新数学模型,并以此改进了钻孔周围瓦斯流动的本构方程。
2.
secondary stress.
本文考虑到上部结构与地基基础共同作用的事实,着重分析上部结构参与共同作用导致的内力重分布——次生应力问题。
6) secondary stress
次应力
1.
Analysis for influence of the shape of trusses up on the secondary stress;
桁架外形对其次应力的影响分析
2.
Analysis of the secondary stress of welded parallel-chord steel trusses;
焊接平行弦钢桁架的次应力分析
补充资料:应力
应力 stress 由载荷、温度、湿度等因素引起物体内部某点处截面内力的集度。其大小和方向决定于所考虑点的位置和截面方向。若过某点任一截面微元ΔS上的内力合力为ΔF,则该点在此截面上的应力σ=ΔF/ΔS 。此应力在截面法线方向的分量称法向应力,在截面内的分量称剪应力。物体内某点不同方向截面上的应力情况称该点的应力状态。物体内任一点的应力状态可由过该点3个相互垂直平面上的9个应力分量σx、τxy、τxz ,σy、τyx、τyz ,σz、τzx、τzy表示(见图)。其中τxy=τyx ,τyz=τzy ,τzx=τxz,故只有6个应力分量是独立的。过该点任一平面上的应力在x、y、z轴上的分量为:X=lσx+mτxy+nτxz ,Y=lτyx+mσy+nτyz ,Z=lτzx+mτzy+nσz ,式中l、m、n为所考虑平面的法线同x、y、z轴夹角的方向余弦。应力是确定材料或构件是否会破坏的一个重要力学参量。
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参考词条