ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

土壤切削大變形的三維數(shù)值仿真
CSTR:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:


Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪(fǎng)問(wèn)統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    對(duì)近年來(lái)有關(guān)土壤切削仿真的研究進(jìn)行總結(jié),,并介紹自適應(yīng)網(wǎng)格劃分、ALE以及SPH等3種解決大變形的方法,;在此基礎(chǔ)上,,針對(duì)一個(gè)簡(jiǎn)化的切削模型,,對(duì)3種方法進(jìn)行土壤切削仿真的結(jié)果進(jìn)行分析和比較,;最后著重以某室內(nèi)模型盾構(gòu)刀盤(pán)刀具和上海地區(qū)軟粘土,,利用ALE方法進(jìn)行盾構(gòu)刀盤(pán)刀具的大規(guī)模三維切削仿真分析,。仿真計(jì)算基于LS-DYNA970 MPP 軟件和“曙光4000A”超級(jí)計(jì)算機(jī),,結(jié)果表明,,3種不同的方法在解決土壤切削大變形時(shí)各有特點(diǎn),其中ALE方法在更為細(xì)致的軟粘土盾構(gòu)三維開(kāi)挖仿真中得到的結(jié)果與試驗(yàn)數(shù)據(jù)較為一致,。

    Abstract:

    A review of the research on soil cutting in recent years was given, and three different methods for dealing with large deformation in soil cutting including adaptive meshing method, arbitrary Lagrangian-Eulerian(ALE) method, and smoothed particle hydrodynamics(SPH) method were introduced. Based on these three methods, a simplified 3-D finite elements model was then constructed for simulation of soil cutting by the shield cutter. After that, with an emphasis laid on the ALE method, a full 3-D finite element model has been constructed for simulation of soil cutting by the shield cutter head and cutter. Final calculation was accomplished by using LS-DYNA 970 MPP software on the DAWNING 4000A supercomputer. Calculation results showed different characteristics of these three methods when dealing with the large deformation in soil cutting through corresponding analysis and comparison. Meanwhile, it is also found that some simulation results such as moment in soil cutting by the shield cutter head and cutter were in good accordance to the experimental data.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

丁峻宏,金先龍,郭毅之,湯華,楊洪杰.土壤切削大變形的三維數(shù)值仿真[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(4):118-121.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(4):118-121.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線(xiàn)發(fā)布日期:
  • 出版日期:
文章二維碼