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 ) 現(xiàn)有的理論分析方法和梁模型有限元方法都難以分析管截面發(fā)生大變形的情況,例如屈曲變形。
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 以此為基礎(chǔ),分析管柱升溫時(shí)的軸向力和變形,確立計(jì)算步驟和邊界點(diǎn)的處理方法。
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 現(xiàn)有的殼模型有限元方法雖然可以分析管截面中的大變形情況,但是,由于在斷層作用下受影響的管子的范圍比較長(zhǎng),需要耗費(fèi)大量的計(jì)算時(shí)間。
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 通過分析管接頭結(jié)構(gòu)以及制備、使用的各個(gè)步驟,運(yùn)用固體力學(xué)的基本理論,結(jié)合nitinb形狀記憶合金在約束下的回復(fù)規(guī)律,對(duì)不銹鋼- -鈦合金管- -四川大學(xué)碩士論文nitinb形狀記憶合金管接頭系統(tǒng)內(nèi)的應(yīng)力狀態(tài)進(jìn)行了理論分析,建立了強(qiáng)度的數(shù)學(xué)模型,通過編程計(jì)算,研究了不銹鋼一鈦合金管一nitinb形狀記憶合金管接頭系統(tǒng)裝配及使用過程中的抱緊力以及最大應(yīng)力強(qiáng)度隨溫度變化的規(guī)律。
分析: analyse管: pipe; tube漢培爾氣體分析管: hempel gas apparatus; hempel gas pipette; hempel pipette氣體容量分析管: endiometer生產(chǎn)分析管理技術(shù): production analysis control technique網(wǎng)絡(luò)分析管理系統(tǒng): nams network analysis and management system威格納沉降分析管: weigner sedimentation tube維格納沉淀分析管: wiegner sedimentation tube系統(tǒng)分析管理人: manager systems analysis項(xiàng)目分析管理系統(tǒng): project analysis and control system賽立信廣播節(jié)目評(píng)估分析管理系統(tǒng): bpes網(wǎng)絡(luò)分析管理系統(tǒng)的數(shù)據(jù)類型: ndt nams data type滲析管: 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微型層析管柱: microchromatographic column分析: 1.analyse 分析成功和失敗的原因 analyse the causes of success and failure; 對(duì)句子作語法分析 analyse a sentence; 培養(yǎng)分析問題和解決問題的能力 cultivate the ability to analyse and solve problems; 他非常周密地分析了形勢(shì)。 he analysed the situation very closely.2.analysis 化學(xué)分析 chemical analysis; 階級(jí)分析 class analysis; 性格分析 the analysis of character; 語法分析 grammatical analysis; 這份報(bào)紙對(duì)政治局勢(shì)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