The model considers the torsional deformation of transmission axes , bending and longitudinal deformation of links , geometrical nonlinearity of guiding leaf springs , and the elastic nonlinearity of balance springs 该模型考虑了传动轴的扭转变形,连杆和导向板弹簧的弯曲和拉伸变形,导向板弹簧的几何非线性及平衡弹簧的非线性等因素的影响。
The results of quantitative analysis showed that the pre - tension deformation reduced the fatigue crack propagation threshold and increased the crack propagation coefficient , and consequently decreased the fatigue resistance of the part with mechanical damage 定量分析表明:预拉伸变形降低了疲劳裂纹扩展门槛值,提高了裂纹扩展系数,从而使管线在机械损伤的部位疲劳抗力降低。
When ct20 alloy was tensioned at 20k , the main deformation mechanism in equiaxed microstructure was the slip of dislocations , and in bimodal microstructure the slip of dislocations and a small amount of twinning and in lamellar microstructure a large amount of twinning Ct20合金20k拉伸变形时,等轴组织主要是位错的滑移起主导作用,双态组织除了位错滑移外还有少量的变形孪晶产生,片状组织中则能观察到数量较多的孪晶。
Three parts are discussed , respective , ( 1 ) the nanostructure in the perfect of single crystal copper structure and perfect titanium structure . ( 2 ) the tensile deformation mechanism and stress analysis of the point defects effects . ( 3 ) the significance of effect as size reduced 本论文所探讨的内容可分为三部分,分别为: ( 1 )针对完美单晶铜结构与完美钛结构的拉伸变形研究( 2 )包含了空孔点缺陷的拉伸变形结构研究( 3 )针对尺寸缩小后所造成的表面效应影响作一探讨。
The results show the moment developing course of flow over flat wall and the evolvement of coherent structure , and also completely simulate all kinds of detail processes in development of boundary layer over flat wall , such as the generation and rise of low - speed stream , the extension and rupture of horse - hoof - shaped vortex and so on 模拟结果给出了平壁流动的瞬态发展过程以及流动中拟序结构的发展演变过程,成功地模拟了平壁边界层发展中的各种瞬态细节过程,如低速条带的产生、上举过程,马蹄形涡的拉伸变形、破裂过程。