The early cracking of concrete is usually caused by dry shrinkage, autogenous shrinkage of cement hydration and thermal-strain by hydration heat of cement.
混凝土的早期开裂主要是由于混凝土失水所产生的干燥收缩、水泥水化所产生的混凝土自收缩以及水泥水化热所产生的温度应变所引起。
Upon heating the zeolite, the normal siloxane linkage would also experience strain due to thermal expansion.
当加热沸石时,由于热膨胀作用,正常的硅氧烷键也会存在张力。
Particularly, for the continent, the crust thickness, thermal age and strain rate significantly had strong effect on the lithosphere strength.
尤其对于大陆岩石圈,地壳厚度、年龄和应变率均可显著影响岩石圈的强度。
Surface roughness of bamboo plywood is affected by many factors, in which thermal strain is one of the most important factors.
在竹胶合板生产中,由于多种因素的影响,竹材表面会产生一定的粗糙度,其中热应变是一个重要的因素。
Apparent thermal strain could be observed during the cryosurgery processes.
低温手术过程中,组织会发生明显的热应变。
From this reason the creep strain and the thermal expansion can be separately examined and added.
由于这两个性质,蠕应变和热应变可分开研究,而且可线性叠加。
The reason for the sawtooth chips is that the adiabatic shear localization occurs in the primary deformation zones when thermal softening exceeds strain and strain rate hardening.
锯齿形切屑产生的原因是第一变形区内因热软化超过应变和应变率强化而发生了绝热剪切局部化。
The results demonstrate that skin stiffness decreases with increasing thermal damage degree and there exist strain rate sensitivity at different damage levels, caused mainly by hydration changes.
结果表明:皮肤的刚度随热损伤度的提高而下降,并且具有不同损伤度下的应变速率敏感性,这些特性主要是由皮肤的水合作用变化所引起的。
If the constrained thermal cycle stopped upon heating, the unloading stress strain curves exhibit a plateau immediately.
如果在加热过程中停止加热并卸载,则卸载应力-应变曲线立即出现应力平台。
The higher the pouring temperature and initial mold temperature are, the larger the plastic strain while the smaller the thermal stress is.
浇注温度和砂型初始温度越高,热节处粘塑性应变越大,而热应力越小。
The characteristics of strain enhanced transformation and ferrite grain refinement are investigated under different processing parameters by thermal simulating tests of Q235 plain carbon steel.
在热模拟单向压缩实验中,通过形变参数的变化考察了Q 235碳素钢应变强化相变的基本规律及铁素体晶粒细化效果。
The model can be used to predict the thermal and mechanical data such as temperature, strain, strain rate distributions.
应用该方法可以给出轧件变形过程中诸如温度场、应变场和应变速率场等各种热力结果。
Thermal strain and strain concentration factor can also be reduced significantly by changing the single curvature relieve slot into three curvature relieve slot.
对汽封弹性槽计算的结果表明:将原来设计的单圆弧弹性槽改为三圆弧弹性槽,热应变及热应变集中系数均可明显下降。
The general solution for plane strain problems in decagonal quasicrystals accounting for thermal effect is derived.
推导了当考虑热效应时十次对称二维准晶体平面应变问题的通解表示。
The existence of rigid etch stop layer helped to reduce the thermal stress and plastic strain.
刚性蚀刻停止层的存在,有助于减少互连线的热应力和塑性应变。
The experimental results show that foe values of strain intensity factor and strain fracture toughness are more stable and useful or determining the thermal fracture property of the concrete.
实验表明,作者提出的应变强度因子及应变断裂韧性的概念对反映混凝土材料的断裂特性更稳定更具实际意义。
Thereby, thermal strain and quenching failure are reduced even if the steel member is a thin plate component and a high production efficiency can be achieved.
因此,热应变和淬火失败被削减,即使钢铁成员是薄板组件和高生产效率可以实现的。
Tests with diphenylamine, formaldehyde, and staining with acridine orange as well as the curves of thermal denaturation showed that this strain of virus had a single stranded DNA.
二苯胺试验,吖啶橙染色、甲醛试验及热变性曲线表明,该病毒是单链dna病毒。
If the constrained thermal cycle stopped upon cooling while the forward martensitic transformation was in progress, the loading stress strain curves exhibited the stress plateau immediately.
如果在冷却过程中发生正相变的时候停止冷却并加载,则加载应力-应变曲线只出现应力平台。
But the strain under compound condition is not only simply addition of that under random vibration and thermal cycling load condition.
此外,复合载荷条件下的应变值也并非随机振动和热循环载荷情况下两种应变值简单的相加。
The result shows that the plastic strain at the heel region induced by wire bonding process, molding process and the thermal stress and strain in solder reflow are the main causes of heel crack.
结果显示由于引线键合工艺、注塑工艺以及回流焊中封装体各部分不同的热膨胀系数引起的热应力和塑性变形是产生引脚跟断裂的主要因素。
A strain analysis model for continuously cast slab has been established on the basis of a thermal analysis model.
以凝固传热模型为基础,建立了连铸板坯应变分析模型。
The variation of microstructure and mechanical properties of the welding heat-affected zone of 2090 Al-Li alloy were investigated by means of the welding thermal, simulated and strain cycles test.
采用焊接热模拟试验方法研究了在焊接热循环和应力-应变循环同时作用下,2090铝锂合金焊接热影响区显微组织和力学性能的变化特征。
As the rise of the strain rate, the feature of the true stress - true strain curve changed from "flat" to "serration", and the thermal deformation softening feature was reinforced.
随应变速率升高,真应力-真应变曲线特征从“平缓”型向“锯齿”型转变,材料热变形软化特征增强。
The transfer and conversion equations of kinetic, chemical, pressure ( strain ) and thermal energy , which are commonly used in engineering, were given.
利用这个普遍化方程导出了在工程领域常见的动能、化学能、压能和热能传递和转换的动力学分解关系。
The principle of the strain gauge technique for thermal expansion measurement was systematically investigated.
详细地探讨了应变片法测量材料线膨胀系数的原理。
Similarly, the unloading stress-strain curves exhibited a linear elastic response followed by a stress plateau if the constrained thermal cycle stopped upon cooling.
与之相似,如果在约束态冷却过程中停止冷却并卸载,卸载应力-应变曲线首先呈线弹性关系,然后才出现应力平台。
In addition, theoretical analysis indicates that the reduction in the lattice thermal conductivity with vacancy defects can be explained by the enhanced point-defect scattering due to lattice strain.
同时理论方法还表明,空位缺陷对薄膜热导率的巨大影响归因于晶格应力的存在使点缺陷也发生散射作用的结果。
In addition, theoretical analysis indicates that the reduction in the lattice thermal conductivity with vacancy defects can be explained by the enhanced point-defect scattering due to lattice strain.
同时理论方法还表明,空位缺陷对薄膜热导率的巨大影响归因于晶格应力的存在使点缺陷也发生散射作用的结果。
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