tension n. 1.拉紧;伸张。 2.(精神、局势等)紧张。 3.【物理学】张力,拉力,牵力;(弹性体的)应力;(蒸气等的)膨胀力,压力。 4.【电学】电压,拉伸力,拉紧[绷紧]装置,绷子。 create [ease, reduce] the international tension 制造[缓和]国际紧张局势。 reduce [relieve] the tension of the market 缓和市场紧张情况。 T- runs high. 形势极为紧张。 surface tension 表面张力。 vapor tension 蒸气张力。 a high tension current 高压电流。 tension failure 伸张破坏。 vt. 张紧,使紧张。 adj. -al
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。