In this article , idealized elastic plastic model and three - dimension finite elements programs have applied to analyzing and researching the stress and displacement distribution of 4 high - steep slopes excavated on the wan - liang expressway , and the relationship has been gained between the stress existing in excavated rock slopes and stability coefficient with depth change through the self - made fortrain program ' s application to the computation of slopes " stability coefficient ; at the same time , through the analysis of the slopes " stability coefficient , such conclusion has been gotten that cohesion in the slipping zone has important effect on slopes " stability and some proposals have been presented to improve the anti - shearing ability of the slipping body through enhancement of the cohesion in the slipping body 本文采用概化均质的理想弹塑性模型，利用三维有限元程序分析了万梁高速公路4个高陡边坡开挖各阶段的应力及应变分布，并且编写了fortran程序用于边坡稳定系数的计算，得出边坡岩体应力及稳定系数随着开挖深度的变化关系。并对边坡稳定系数的敏感性进行了分析，得出滑带内聚力的变化对边坡稳定性至关重要，提出了改善滑带岩土粘结状态提高抗剪能力的工程措施。
Fractal character of fault surface is studied and analyzed with fractal theory n catastrophe theory and similar material modeling fem numerical simulation . at the same time the effect of fault surface on the failure regularity of rock masses is discussed . stress - strain distribution regularity of rock masses with different fractal fault in mining condition is analyzed 本文运用分形、突变理论及相似材料模拟实验、有限元数值计算等手段，研究、分析了断层面的分形特征，探讨了断层面的存在对于岩体移动规律的影响，分析了含有不同分形维数断层面的煤岩体在采动条件下的应力应变分布规律。
Tow speciments of prestressed fabricated beam - column subassembly were tested under reversed cyclic loading . experimental studies were carried out to investigate the strain distribution , failure mechanism and load - bearing capacity on the beam - column connections , as well as ductility , hysteresis curves energy dissipation , displacement restoring capacity of full pc speciments 本文通过两榀预压装配式梁柱组合体在低周反复荷载下的试验，了解了预压装配式框架梁端截面应变分布、破坏机理和极限承载能力；探讨了全预应力配筋截面延性特征、滞回性能、耗能能力和变形恢复能力。
Through the simulation of the forming process , we can get the deformations , stress , strain , plastic flowing in sheets and the interface state under impact load and rolling load , the deformation of the sawtooth form and comparing to the initial state , the results above are expressed in computer animated way . and the effect of geometrical ( mainly different form , including 90 degree , isoceles triangle ， 75 degree , and 1 . 5 high and wide ) , material and technical parameters on the bond strength are analyzed , also including the comparison of different sawtooth form . the optimum parameters are got 对双金属复合板成型过程进行模拟，从而得到在冲击载荷和轧辊压力作用下基板和覆板的应力、应变分布和塑性流动变形规律，复合后的齿形的变形情况与初始齿形形成对比，以动画的方式模拟成型过程，并分析了不同几何参数（主要是不同的齿型，其中包括直角齿型、等腰齿型、 75度齿型、 1 . 5高宽齿型） 、材料参数、工艺参数对复合强度的影响，以及不同齿型的变形对比以及齿型对复合情况的影响，提出最优齿型、最优工艺参数，有效地指导了实验。
Based on the simplified principle , the modal shapes of selected structural modes are converted into modal strains . to minimize the calculation error , curve - fitting technique is used in the process . the modal strains are summed together to determine the global distribution of the structure for selected vibration modes so that the position of piezoelectric elements could be optimally determined according to the simplified optimization principle 通过二阶中心差分运算将模态振型转化为模态应变，采用应变曲线拟合方法降低离散误差，进而将各阶待控模态应变进行叠加，获取系统整体特征应变分布情况；最后根据压电元件位置优化的简化目标函数，将压电片的最优位置确定为柔性板叠加模态应变的极值区域。
By analyzing the influence of hemisphere pits with different dimension and ellipsoid pits with different aspect ratio on stress and strain distribution of lap joint , the possible propagation of fatigue crack was discussed , and the effects of localized pitting corrosion on the structural integrity of lap joints were discussed 通过分析不同尺寸的半球形蚀坑和不同长短半轴比值的半椭球形蚀孔应力应变分布的影响，探讨搭接件疲劳裂纹的可能扩展方向，讨论局部孔蚀对搭接件结构完整性的影响。
We studied the structural dyanamic performances such as interal force , deformation and failure forms and so on under the horizontal earthquake action , got the regularity of the structural period , frequency , damping and other dyanamic behaviors in different stages , discussed the characteristics of earthquake response such as structural displacement , interstorey drift , earthquake action , the amplificatory coefficient of seismic action and the regularity of members " strain and analyzed the deformation property , the characteristics of hysteretic curve and the restoring force 研究了结构在水平地震作用下的受力特点、变形特征、破坏形态等力学性能；得到了结构在不同阶段的周期、频率、阻尼等动力特性的变化规律；讨论了结构各楼层的水平位移、层间位移、动力放大系数及构件应变分布等结构地震反应特征；分析了结构的变形性能、滞回特征和恢复力特性。
In the analysis ansys6 . 0 is used . two grain fem modals are used to figure out the stress and strain under different load case , including inertial force in radius direction , inertial force in axis direction and colligating the two inertial force . last , the result is compared with the result of analytic method 在不同的受载条件下，求出药柱应力场和变形，包括只受径向惯性力，只受轴向惯性力及径向轴向惯性力综合作用下的应力应变分布并与解析方法相比较，得出了较为合理的结果。
Total of 14 dumbbell cfst columns were tested under eccentric loading , those with 6 specimens which concrete filled into the web space and those with 8 specimens which concrete not filled into it . experimental results indicate that , the portrait strain on the middle section of two type specimens keep on the plane with each loading . the maximum load of columns which concrete not filled into the web space is lower than those filled into it 试验结果分析表明，两组试件的中截面纵向应变分布在不同的受荷阶段基本能保持平面；腹腔内不填充混凝土的哑铃形柱的极限承载力比腹腔内填充混凝土的哑铃形柱的极限承载力略小，但差值不大，且这种差值随着偏心率的增大而减小。
Secondly , gnetic agorithm ( ga ) is applied to design the load recognising processing of structure . it can solve how to search the optimal solution in the load detecting recognising . according to the structure of basic ga , the chromosome coding and decode , fitness , and genetic operator are designed . it is validated through the experiment of load recognising in the model of wing - box 利用光纤智能夹层来采集结构应变分布,引入遗传算法来解决识别过程求全域优化解(载荷)的问题。根据基本遗传算法的构造过程设计了染色体的编码与解码、适应度函数和遗传算子等重要步骤,并在机翼盒段试件上进行载荷识别试验验证。
