本文選題：高強(qiáng)度鋼筋　切入點(diǎn)：彎箍　出處：《鍛壓技術(shù)》2017年01期

【摘要】：高強(qiáng)度鋼筋在彎箍機(jī)上進(jìn)行彎箍加工成一定角度后,在殘余應(yīng)力作用下鋼筋會(huì)產(chǎn)生回彈現(xiàn)象。為了提高箍筋角度的精度,需要考慮回彈角度對(duì)箍筋角度的影響�；趶椝苄詮澢貜椑碚�,考慮加工硬化影響的情況下,推導(dǎo)出箍筋角度與回彈角度的關(guān)系式。并基于彎箍轉(zhuǎn)盤(pán)幾何模型,推導(dǎo)出彎箍轉(zhuǎn)盤(pán)轉(zhuǎn)角與箍筋角度的關(guān)系。應(yīng)用MARC有限元軟件建立彎箍模型,分析了彎箍成形速度、彎箍軸回轉(zhuǎn)半徑對(duì)鋼筋回彈角的影響。進(jìn)行彎箍成形實(shí)驗(yàn),結(jié)果表明,彎箍成形速度對(duì)回彈角度影響較小,回彈角隨著彎箍軸回轉(zhuǎn)半徑的增大而增大,實(shí)驗(yàn)結(jié)果與有限元模擬結(jié)果基本吻合。
[Abstract]:When the high strength steel bar is processed to a certain angle on the bending hoop machine, the steel bar will rebound under the action of residual stress.In order to improve the precision of stirrups angle, the effect of springback angle on stirrups angle should be considered.Based on elastic-plastic bending springback theory, the relationship between stirrups angle and springback angle is derived considering the effect of work hardening.Based on the geometric model, the relationship between the rotation angle of the bending hoop and the stirrups angle is deduced.The MARC finite element software is used to establish the bending hoop model. The influence of the forming speed and the rotation radius of the bending hoop shaft on the springback angle of the steel bar is analyzed.The results show that the effect of the forming speed on the springback angle is small, and the springback angle increases with the increase of the rotation radius of the bending hoop shaft. The experimental results are in good agreement with the finite element simulation results.
【作者單位】： 燕山大學(xué)繼續(xù)教育學(xué)院;燕山大學(xué)國(guó)家冷軋板帶裝備及工藝工程技術(shù)研究中心;
【基金】：秦皇島市科學(xué)技術(shù)研究與發(fā)展計(jì)劃項(xiàng)目(201502A013)
【分類(lèi)號(hào)】：TG306

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