back stress meaning in Chinese
反向应力
反应力
Examples
- Back stress effect
背应力效应 - While cyclic deformation experiment under constant strain control is performed in 400 , the material shows the continuous hardening until cyclic invalidation . ( 3 ) back stress attained by kwl " s method is used to analyse the bauschinger effect during an incremental step cyclic test and cyclic deformation test under constant strain control , it is shown that back stress increases with increasing plastic strain and the numbers of cycle , and the back stress is uniform , regardless of tension or compression conditions . ( 4 ) as far as recrystallized zircaloy - 4 plate is concerned , the back stress in transverse direction is higher than that in rolling direction due to the higher schmid factor in rolling direction
对于再结晶状态的zr一4合金板材试样来说， t方向(横向)试样的背应力要高于r方向(轧制方向)的背应力，原因在于r方向的schmid因子高于t方向的schmid因子; 400下， zr一4合金的背应力要明显低于室温下的背应力;含氢200pg / g的zr一4合金的背应力大小与无渗氢的zr一4合金背应力相比，无明显区别;固溶处理后， zr一4合金的背应力大小发生了变化，在较高塑性应变下，背应力均高于固溶处理前的背应力。 - So it is very important to understand the cyclic deformation behavior of zircaloy - 4 . in this paper , bauschinger effect of zircaloy - 4 with different metallurgical state at room temperature and 400 ? is investigated in an incremental step test and cyclic deformation test under constant strain control . bauschinger effect during cyclic deformation is described by using back stress , which is mainly responsible for bauschinger effect ; back stress is attained by using kwl " s method
本文采用单试样逐级加载循环变形和恒应变幅循环变形试验，研究了不同冶金状态、温度、氢以及固溶处理下的zr - 4合金的bauschinger效应现象；种种结果表明，影响bauschinger效应的主要因素是背应力；本文正是从背应力的角度来分析各种状态下zr - 4合金的bauschinger效应现象；背应力的计算主要通过使用kwl方法而获得。 - In this dissertation , the effect of texture , heat - treatment , and hydrogen on the lcf behavior of zircaloy - 4 and the cyclic deformation behavior for zircaloy - 4 , n18 alloy and n36 alloy have been investigated systematically using fully - reversed tension - compression loading under strain control ( r = min / max = - 1 ) , while the evolvement of the friction and back stresses versus the number of repeated working cycles and the plastic strain amplitude has been studied , and the thorough discussion combined with the analysis result of fatigue sub - structure , friction and back stresses , and fatigue fracture has been given to the mechanism underlying the lcf behavior of alloys
本文采用对称拉压循环变形方法( r _ = _ ( min ) _ ( max ) = - 1 ) ，系统研究了织构、热处理状态、氢对zr - 4合金低周疲劳性能的影响， zr - 4合金、 n18合金和n36合金的循环变形行为，并研究了摩擦应力、背应力随循环周次、塑性应变幅的变化规律。结合疲劳亚结构和疲劳断口的分析结果，深入探讨了影响合金低周疲劳行为的作用机制。