本文選題：應(yīng)變?cè)鲩L(zhǎng)現(xiàn)象 + 球形爆炸容器��； 參考：《爆炸與沖擊》2017年06期

【摘要】：應(yīng)變?cè)鲩L(zhǎng)現(xiàn)象威脅容器安全,研究應(yīng)變?cè)鲩L(zhǎng)現(xiàn)象的極限情況對(duì)爆炸容器的安全應(yīng)用非常重要。本文中開(kāi)展了球形容器爆炸加載實(shí)驗(yàn),獲得了應(yīng)變?cè)鲩L(zhǎng)系數(shù)達(dá)到6.1的應(yīng)變數(shù)據(jù),并利用數(shù)值模擬分析球殼彈性變形范圍內(nèi)振動(dòng)模態(tài)疊加形成的應(yīng)變?cè)鲩L(zhǎng)現(xiàn)象的極限情況。研究表明:(1)應(yīng)變?cè)鲩L(zhǎng)現(xiàn)象符合幾何相似律,影響應(yīng)變?cè)鲩L(zhǎng)的因素包括擾動(dòng)源類型、擾動(dòng)源半徑與球殼半徑之比、球殼厚度與球殼半徑之比、第一個(gè)應(yīng)變峰等,其中擾動(dòng)源參數(shù)是主要影響因素。(2)當(dāng)擾動(dòng)源位移被完全約束、擾動(dòng)源半徑等于球殼半徑時(shí),球殼上可能的應(yīng)變?cè)鲩L(zhǎng)系數(shù)接近12。
[Abstract]:The phenomenon of strain growth threatens the safety of the vessel. It is very important to study the limit of the phenomenon of strain growth for the safe application of explosive vessel. In this paper, the experimental results of explosion loading of spherical vessels are carried out, and the strain data with strain growth coefficient of 6.1 are obtained, and the limit of strain growth phenomenon caused by the superposition of vibration modes in the elastic deformation range of spherical shells is analyzed by numerical simulation. The results show that the strain growth conforms to the geometric similarity law. The factors influencing the strain growth include the type of disturbance source, the ratio of the radius of disturbance source to the radius of the spherical shell, the ratio of the thickness of the spherical shell to the radius of the spherical shell, the first strain peak, etc. The disturbance source parameter is the main influencing factor.) when the disturbance source displacement is completely constrained and the perturbation source radius is equal to the spherical shell radius, the possible strain growth coefficient on the spherical shell is close to 12.
【作者單位】： 北京理工大學(xué)爆炸科學(xué)與技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;西北核技術(shù)研究所強(qiáng)動(dòng)載與效應(yīng)重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：O383
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本文編號(hào)：1903572