There are the two limitations for both of the cable method and beam method : ( 1 ) it can only analyze the response of pipeline under tensile loading ( < 90 ) 现有的理论分析方法和梁模型有限元方法都难以分析管截面发生大变形的情况,例如屈曲变形。
When temperature increases , deformation will develop under post buckling conditions , and it is difficult to describe axial force with analytic method , so numerical method is used 以此为基础,分析管柱升温时的轴向力和变形,确立计算步骤和边界点的处理方法。
When the crossing angle is larger than 90 degree , the pipeline would prone to suffer a buckling damage ; ( 2 ) it cannot be used to analyze the large deformation in the pipe section 现有的壳模型有限元方法虽然可以分析管截面中的大变形情况,但是,由于在断层作用下受影响的管子的范围比较长,需要耗费大量的计算时间。
The stress state in the stainless steel pipe - titanium alloy pipe - nitinb shape memory alloy connector system is analyzed by using the theory of solid mechanics and the recovery rules of nitinb shape memory alloy with constrains on the basis of analysis of the structure of the connector system and the all steps in the preparation and the service . a mathematical model for the strength was proposed . the temperature dependence of connecting force and the maximal stress intensity in the pipe connector in the process of preparation and service was studied by programming and computing . the computing results show that the difference of heat expansile coefficient between the coupling material and the pipe material leads to the strength of connector system at room temperature less than the strength at high temperature 通过分析管接头结构以及制备、使用的各个步骤,运用固体力学的基本理论,结合nitinb形状记忆合金在约束下的回复规律,对不锈钢- -钛合金管- -四川大学硕士论文nitinb形状记忆合金管接头系统内的应力状态进行了理论分析,建立了强度的数学模型,通过编程计算,研究了不锈钢一钛合金管一nitinb形状记忆合金管接头系统装配及使用过程中的抱紧力以及最大应力强度随温度变化的规律。
分析: analyse管: pipe; tube汉培尔气体分析管: hempel gas apparatus; hempel gas pipette; hempel pipette气体容量分析管: endiometer生产分析管理技术: production analysis control technique网络分析管理系统: nams network analysis and management system威格纳沉降分析管: weigner sedimentation tube维格纳沉淀分析管: wiegner sedimentation tube系统分析管理人: manager systems analysis项目分析管理系统: project analysis and control system赛立信广播节目评估分析管理系统: bpes网络分析管理系统的数据类型: ndt nams data type渗析管: dialysis tube透析管: dialysis tube; dialysis tubing腹膜透析管: peritoneal dialysis catheter透析袋,透析管: dialysis tube透析管膜: dialysing tube微型层析管柱: microchromatographic column分析: 1.analyse 分析成功和失败的原因 analyse the causes of success and failure; 对句子作语法分析 analyse a sentence; 培养分析问题和解决问题的能力 cultivate the ability to analyse and solve problems; 他非常周密地分析了形势。 he analysed the situation very closely.2.analysis 化学分析 chemical analysis; 阶级分析 class analysis; 性格分析 the analysis of character; 语法分析 grammatical analysis; 这份报纸对政治局势作了很好的分析。 that newspaper has a very good analysis of the political situation.3.analytical 分析能力 analytical ability分析的, 分析: analyzingbcr分析: bcr analysisdna分析: dna analysislogit分析: logistic regressionlr分析: lr parsingpcr分析: pcr analysis