The prime works are as follows : strain and stress distribution of section was analyzed . the effect of prestress degree . on cracking moment was explored . the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied . the formulae had been established 其次，设计了三根活性粉末混凝土无粘结预应力叠合梁，两点对称集中加载、一次受力，得到了它们的截面应变分布、挠度与变形、无粘结预应力钢绞线的预应力增量、裂缝的发展与分布以及极限荷载。
Based on winkler assumption and mindlin ' s solution of displacement , elastic solutions for distributions of strain , axial force and bond stress are derived , and the influence of mechanical parameters to those are discussed . the elastic solutions are compared with results of testing , which indicate that the solution from winkler assumption can be well tallied with the test results 在一定的简化假设基础上，根据局部变形假定和mindlin位移解，分别推导出锚索注浆体内的粘结应力、轴力与应变分布公式，并将其与试验结果进行了对比分析，表明局部变形假定解与试验结果能够较好地吻合。
And being based on the fea model , the distribution of strain and stress on the system are computed to analyze its structure intensity and rigidity properties . the research of the structure - statics gives out some rules to direct the design optimization of the thbip - i 论文首先研究建立了thbip -仿人机器人系统的精确弹性动力学有限元分析模型，并在此基础上进行结构静力学分析，研究各部件应力、应变分布状况，分析其强度和刚性等力学性能，提出thbip -结构优化初步措施，为结构优化设计提供理论依据。
Based on strain distribution acquired in experiment , the internal force evaluation model is set up , then , the structural behavior of slw are investigated in detail . combined with the nonlinear fem results , the structure behaviors are expressed in the concepts of " principal limb " ( pl ) and " load effect bearing ratio " ( lebr ) , and the function for lebr determining is put forward , which may be used in the practical section design 本文进行了国内首例短肢墙结构体系低周反复试验；基于试验实测的墙肢应变分布，拟合了墙肢截面的应变分布规律，并进行了短肢墙结构内力大小及其分布规律的分析，建立了墙肢荷载效应负载率的数学模型，为实际工程的截面设计创造了条件。
In the paper , the fea model is constructed using the large software ansys , the element adopt shell63 element . through the static analysis of the important six brackets , we learned the distribution of stress and strain to some extent . then we know the key area of the bracket , get many stress field modes and saved 对其中重点监测的6个牛腿进行了在设计荷载下的静力计算分析，对各个牛腿的应力应变分布有一定程度的了解，确定了牛腿监测的关键区域及计算得到各需监测牛腿的应力场模式并存储下来。
In order to prolong the natural life of fracturing pump valve , this article do much basic research work on fracturing pump value . firstly , kinetic characteristics of fracturing pump valve are stated particularly and analysed . through stimulated experiment based on practical working conditions , the wearing disciplinarian and forms of impact particle wear about fracturing pump valve are researched by comparing it with pure impact wear and abrasive wear . furthermore , the wear mechanism of impact particle wear and particle erosion are analysed . in the end , by using the fenite element analyzing tool ansys , the distributing law of stress and strain of fracturing pump valve at the state of closing and during the process of impact are analysed carefully 详细阐述和分析了它的运动特性；根据其实际工况，通过模拟试验，研究了压裂泵阀冲击磨料磨损的磨损规律和磨损形式，并且将其与纯冲击磨损、滑动磨料磨损进行了对比；分析了压裂泵阀的冲击磨料磨损、冲蚀磨损等磨损机理；借助ansys有限元分析工具，对泵阀关闭状态下和冲击过程中的应力应变分布规律进行了详细分析。
