本文選題：波紋板防爆墻　切入點(diǎn)：破壞機(jī)理　出處：《振動(dòng)與沖擊》2017年06期 　論文類型：期刊論文

【摘要】：以非線性有限元分析方法為基礎(chǔ),分析三種波紋板防爆墻在不同爆炸載荷下的動(dòng)態(tài)響應(yīng)及破壞機(jī)理,基于最大破裂應(yīng)變準(zhǔn)則,采用P-I模型,擬合三種類型波紋板防爆墻的抗爆評(píng)估P-I曲線,獲取確定擬合不同防爆墻P-I曲線的統(tǒng)一經(jīng)驗(yàn)方程形式,借助方差分析,進(jìn)行波紋板防爆墻P-I曲線的參數(shù)影響性分析,基于最小二乘法,建立任意截面尺寸波紋板防爆墻P-I曲線的預(yù)測(cè)經(jīng)驗(yàn)公式,結(jié)合實(shí)際案例,預(yù)測(cè)某截面尺寸下波紋板防爆墻的抗爆能力,并與實(shí)驗(yàn)實(shí)測(cè)值、單自由度理論模型進(jìn)行對(duì)比。預(yù)測(cè)經(jīng)驗(yàn)公式由于考慮應(yīng)變率效應(yīng)及局部響應(yīng)效應(yīng),更具有準(zhǔn)確性,其可用于快速、便捷地進(jìn)行油氣爆炸載荷下任意截面尺寸防爆墻抗爆能力評(píng)估,為工程人員初始抗爆設(shè)計(jì)、災(zāi)后后果評(píng)估提供參考。
[Abstract]:Based on the nonlinear finite element analysis method, the dynamic response and failure mechanism of three kinds of corrugated plate explosion-proof walls under different explosion loads are analyzed. Based on the maximum rupture strain criterion, P-I model is adopted. Fitting the P-I curve of three types of corrugated plate explosion-proof wall, obtaining the unified empirical equation to fit the P-I curve of different explosion-proof wall, and analyzing the influence of P-I curve parameters on the P-I curve of corrugated plate explosion-proof wall by means of variance analysis. Based on the least square method, the empirical formula for predicting P-I curve of corrugated plate explosion-proof wall with arbitrary section size is established. Combining with practical cases, the anti-explosion ability of corrugated plate explosion-proof wall under certain section size is predicted, and the experimental results are obtained. The theoretical model of single degree of freedom is compared. The empirical formula is more accurate because of considering strain rate effect and local response effect, and it can be used quickly. It is convenient to evaluate the anti-explosion ability of explosion-proof wall with any section size under the explosion load of oil and gas, which provides a reference for the initial anti-explosion design of engineers and the assessment of post-disaster consequences.
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本文編號(hào)：1631176