本文選題：等通道轉(zhuǎn)角擠壓 + 有限元分析　； 參考：《熱加工工藝》2016年21期

【摘要】：使用有限元模型模擬分析了不同等通道轉(zhuǎn)角擠壓工藝參數(shù)對擠壓過程中摩擦應(yīng)力的影響,研究了工藝參數(shù)變化對最大摩擦應(yīng)力大小的影響規(guī)律。使用工業(yè)AZ31鎂合金進行等通道轉(zhuǎn)角擠壓試驗,并對模擬結(jié)果進行了驗證。結(jié)果表明,無過渡圓角時,模具內(nèi)角對轉(zhuǎn)角處最大摩擦應(yīng)力影響大于模具外角對該處摩擦應(yīng)力的影響。增加過渡圓角后,隨著圓角半徑增大,摩擦應(yīng)力集中顯著減小,并使圓角兩側(cè)摩擦應(yīng)力數(shù)值接近,最大摩擦應(yīng)力隨摩擦系數(shù)增加而線性增加。理論分析結(jié)果與試驗結(jié)果相一致。
[Abstract]:The influence of the technological parameters of different channel angle extrusion on the friction stress in the extrusion process was simulated by using the finite element model, and the influence of the process parameters on the maximum friction stress was studied. The equal channel angular extrusion test of industrial AZ31 magnesium alloy was carried out, and the simulation results were verified. The results show that the influence of the internal angle of the die on the maximum friction stress of the corner is greater than that of the external angle of the die. With the increase of the transition angle, the friction stress concentration decreases significantly with the increase of the radius of the corner, and the value of the friction stress on both sides of the corner is close to that of the corner, and the maximum friction stress increases linearly with the increase of the friction coefficient. The theoretical analysis results are in agreement with the experimental results.
【作者單位】： 中國石油大學(華東)機電工程學院;山東省無石棉摩擦材料技術(shù)研究推廣中心;
【基金】：國家自然科學基金資助項目(51205410) 中央高�；究蒲袠I(yè)務(wù)費專項資金資助項目(13CX02071A)
【分類號】：TG376

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1 陽志安;肖耀天;師昌緒;;γ強化鎳基合金蠕變摩擦應(yīng)力的測定[J];金屬學報;1987年05期

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本文編號：1832973