Stress relaxation is dependent upon time, temperature, the initial stress level, and material. 应力松弛由于时间、温度、初始应力水平和材料的不同而不同。
The study also goes to the influence, upon stress waves, of the piles relaxation time, the equivalent viscous damping coefficient of soil around the pile and the unit rigidity of soil below the pile. 同时,分析了桩身驰豫时间、桩侧土的等效粘滞阻尼系数、桩底土的单位刚度等因素对应力波的影响。
The stress relaxation was studied and the influencing factors on stress and relaxation time were also determined. 对饲草在压捆时的应力松弛现象进行了试验研究,确定出在压捆过程的最大应力和松弛时间影响显著的因素;
The stress relaxation was mainly related to the heating temperature and time. 加热温度及时间是决定应力松弛的关键因素。
It is discussed that Maxwell model can be used to describe stress relaxation tests and dynamic mechanical tests, and the molecular theory may also be used to calculate the relaxation time of polymer solutions. Maxwell模型可以很好地描述应力松弛实验和动态力学实验,也可以用分子理论对聚合物溶液的松弛时间进行计算。
On Police Stress and Relaxation The stress relaxation was mainly related to the heating temperature and time. 浅谈警察的心理压力与缓解对策加热温度及时间是决定应力松弛的关键因素。
This paper gives the general kinetics equation as well as the critical shear stress value ( or the critical press gradient value) when the chain structure breaks down, and the method to get the structure relaxation time in the "structure capture particle" process. 给出了电流变响应过程的一般动力学控制方程以及链崩溃时临界的剪切应力值(压力梯度值),及俘获粒子过程中有关结构弛豫时间的求法。
We also get the database and curvature of stress relaxation and creep test, normalization stress relaxation function, the formula database and the curvature of the stress relaxing and creep, the creep capacity and the stress relaxing capacity at the time of 7200 seconds. 还得出了应力松驰、蠕变实验数据和曲线,归一化应力松驰函数、蠕变函数数据和曲线,并得到7200s时的蠕变量和应力松驰量。
And integrality of rock structure and the performance of store of elastic deformation energy of rock have obvious influence on the number of stress descending steps and stress relaxation time. 岩石结构的完整性和岩石弹性能量储存能力强弱对岩石的松驰特性具有明显影响,因这些因素不同,则应力下降台阶数及松驰时间也不同。
Stress Relaxation Time of Hay and Its Application 牧草应力松弛时间及其应用
Long-term stress relaxation experiments of cellular silicone material were carried. The relationship between stress retention and time was obtained, changes aroused from stress relaxation were analyzed by modern analysis technique. 对硅泡沫材料的长期应力松弛进行了实验研究,得出了硅泡沫材料应力保持率与松弛时间的关系,并用现代分析测试技术对硅泡沫材料由应力松弛引起的变化进行了分析。
The results indicate that equivalent stress reflect the change of creep stress. It is more obvious affect of stress relaxation when hold time and temperature increase. 结果表明:当量应力能反映蠕变应力的变化;保持时间和温度增加使松弛作用表现更明显;温度较高时蠕变寿命受松弛影响较小。
Besides, the stress relaxation of prestressed reinforcement, shrinkage and creep of concrete would cause the loss of prestressing force along the time, which to be called long-term loss of prestressing force. 另外,预应力筋的应力松弛和混凝土的收缩徐变将引起预应力随时间的发展而变化的损失,称为预应力长期损失。
Collagen fiber will move in the direction of applied load, but the movement needs external force and time. Thus, skin exhibits obvious viscous effect, which is observed during the creep, stress relaxation and time dependent ratchetting tests. 皮肤在承受载荷时,胶原纤维会沿着载荷作用方向运动,而运动需要外力和时间,因此,皮肤具有蠕变、应力松弛、时相关棘轮效应等现象,体现出明显的粘性效应。
In the experiment of strain-controlled cyclic, the stress amplitude has a close relationship with the applied strain loading rate and strain amplitude. Due to the stress relaxation, the responded stress amplitude will decreases as the hold time at strain peak increase. 在应变控制循环实验中,响应应力幅值与应变加载速率和应变加载幅值密切相关;在应力松弛效应的影响下,响应应力幅值会随着应变峰值保持时间增加而减小。