基于最大正應(yīng)力的自升式平臺(tái)懸臂梁框架輕量化優(yōu)化設(shè)計(jì)
發(fā)布時(shí)間:2018-02-28 17:51
本文關(guān)鍵詞: 懸臂梁 變截面 輕量化 出處:《機(jī)械工程學(xué)報(bào)》2017年07期 論文類型:期刊論文
【摘要】:懸臂梁是自升式鉆井平臺(tái)的重要組成部分,提高了海洋平臺(tái)鉆井效率和鉆井靈活性。以傳統(tǒng)型懸臂梁為研究對(duì)象,建立有限元模型,對(duì)其抗彎性能仿真分析。同時(shí),從理論上以解析公式分析懸臂梁作業(yè)狀態(tài)下懸挑距離對(duì)其彎矩分布的影響規(guī)律;以最大正應(yīng)力為約束,推導(dǎo)懸臂梁兩側(cè)主梁設(shè)計(jì)高度隨懸挑距離變化規(guī)律,對(duì)懸臂梁進(jìn)行變截面設(shè)計(jì),驗(yàn)證結(jié)果表明,優(yōu)化后懸臂梁重量減輕22.903 t,同時(shí)抗彎性能有所提升,達(dá)到了輕量化的效果。
[Abstract]:Cantilever beam is an important part of jack-up drilling platform, which improves drilling efficiency and drilling flexibility of offshore platform. Taking the traditional cantilever beam as the research object, the finite element model is established, and the bending performance of the cantilever beam is simulated and analyzed. The influence of cantilever distance on the bending moment distribution of cantilever beam is analyzed theoretically by analytical formula, and the design height of main beam on both sides of cantilever beam is deduced with the maximum normal stress as constraint. The variable section design of the cantilever beam is carried out. The results show that the weight of the cantilever beam is reduced by 22.903t, and the bending resistance is improved, which achieves the effect of lightweight.
【作者單位】: 同濟(jì)大學(xué)上海市地面交通工具空氣動(dòng)力與熱環(huán)境模擬重點(diǎn)實(shí)驗(yàn)室;同濟(jì)大學(xué)機(jī)械與能源工程學(xué)院;上海振華重工(集團(tuán))股份有限公司;
【分類號(hào)】:TE951
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