有限元分析應(yīng)用 finite element method & its application
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This differ with computation modal that design the foundation pier very big , bearing power too than design increment ; usage mechanics numerical analysis device with limited a logarithm of timw fitting method logt , noted the rock strength in stake tip of the borehole cast - in - place concrete pile to proceed with the structure steadiness the simulation compute to study with the fixed amount , designing for the engineering to start construction to provide for science with the spot 本研究結(jié)合現(xiàn)場試驗(yàn)、力學(xué)數(shù)值分析和有限單元分析,對(duì)巖溶地段鉆孔灌注樁的施工工藝、荷載傳遞機(jī)理、持力層頂板厚度及嵌巖深度等方面作一些探討性研究,為該工程的設(shè)計(jì)和施工積累經(jīng)驗(yàn),并為該類課題的進(jìn)一步研究奠定了基礎(chǔ)。
Abstract : finite element method of tire temperaturefield is introduced in th is paper . temperature distribution curves of tire 9 . 00r20 underspecific conditio n are given . the results will provide theoretical basis for developingnew tire a nd optimizing tire structures 文摘:介紹了輪胎溫度場的有限單元分析方法,分析了9 . 00r20子午線結(jié)構(gòu)輪胎在特定條件下的溫度場分布情況,給出了溫度場分布云圖和溫度分布曲線,目的是為輪胎的研制開發(fā)提供可靠的理論依據(jù),以便優(yōu)化輪胎結(jié)構(gòu)
The main research works and conclusions of this thesis are listed as follows . the dynamic analysis model of elastic mechanism system with damping alloy parts is deduced based on the relationship between stress and strain of the material , also the analysis model under viscous damping model , complex damping model , nonlinear damping model and viscous - elastic damping model is put forward using the finite element method 本文的主要研究工作及結(jié)論如下:從材料應(yīng)力應(yīng)變本構(gòu)關(guān)系出發(fā),導(dǎo)出了滯變阻尼模型、復(fù)阻尼模型、非線性阻尼模型、粘彈性阻尼模型下的有限單元分析模型,進(jìn)而給出了含阻尼合金構(gòu)件彈性連桿機(jī)構(gòu)系統(tǒng)動(dòng)力學(xué)模型。
Which often produces some unexpected problems , such as prolonging time limit of project , increasing engineering quantities and cost , etc . through test on the site , dynamic value analysis , finite element unit method , the paper researchs construction technology of in - situ pile , transfer theory , thickness of supporting layer of head slab and depth of pile in karst area , provides some important conclusions , directs effectively the design and construction of this kind of projects 但因溶洞的分布規(guī)律性差,現(xiàn)有勘探手段難于事先查明它的準(zhǔn)確位置及大小,因而常常給施工帶來意想不到的問題:工期延長、工程量增加及工程費(fèi)用增加等。本文通過現(xiàn)場試驗(yàn)、理論計(jì)算和有限單元分析,對(duì)巖溶地區(qū)鉆孔灌注樁的施工工藝、荷載傳遞機(jī)理、持力層頂板厚度及嵌巖深度等方面進(jìn)行了較為系統(tǒng)的研究,得出了一些重要結(jié)論,有效地指導(dǎo)了該類工程的設(shè)計(jì)和施工。
Thirdly , to improve the application of light gauge steel structure in our country , some experimentations of institute of new - style steel structure which adopting native productions are induced nally , three - dimensional finite element model is presented . compared with the tests , mumerical results are verified much accurate and efficient , therefore a reliable way is provided to utilize the computational technique adequately to reduce the tests and to utilize the experimental results adequately to improve design quality , ( 3 ) study on floor system . not only adequate strength , stiffness and integer stabilization must be provided , but also insulation , fire and acoustics must be satified 本文首先論述了lgsfcbw各種破壞模式及其原因,總結(jié)了各因素對(duì)lgsfcbw抗剪性能的影響,從而為我國引進(jìn)和應(yīng)用輕鋼龍骨結(jié)構(gòu)體系奠定了基礎(chǔ);其次從試驗(yàn)?zāi)P?、試?yàn)方法和試驗(yàn)結(jié)果三方面探討了國外lgsfcbw抗震性能的研究,并分析該體系的破壞模式和抗震特性、提出研究建議;然后介紹了為推動(dòng)輕鋼龍骨住宅國產(chǎn)化,我們采用國產(chǎn)材料開展的系列試驗(yàn);最后提出了lgsfcbw的有限單元分析法,數(shù)值計(jì)算與試驗(yàn)結(jié)果一致,為充分利用計(jì)算技術(shù)減少試驗(yàn)數(shù)量和充分利用試驗(yàn)成果提高設(shè)計(jì)水平提供了一條可靠途徑。