旋轉(zhuǎn)超聲磨削鈦合金有限元仿真與試驗(yàn)研究
發(fā)布時(shí)間:2018-12-09 15:43
【摘要】:為了研究固結(jié)磨粒磨具的磨料粒度對旋轉(zhuǎn)超聲磨削鈦合金磨削力的影響,采用隨機(jī)空間平面切割正六面體的方法構(gòu)建了具有實(shí)際磨粒幾何特征的不規(guī)則多面體磨粒,并基于虛擬格子法建立了磨粒在磨具端面隨機(jī)分布的多顆磨粒磨具模型。使用Deform-3D軟件構(gòu)建了三維旋轉(zhuǎn)超聲磨削鈦合金有限元模型,采用拉格朗日增量算法獲得了多顆磨粒磨具旋轉(zhuǎn)超聲磨削鈦合金Ti6Al4V的磨削力仿真值,得到了磨料粒度對磨削力的影響規(guī)律,并通過試驗(yàn)進(jìn)行了驗(yàn)證。結(jié)果表明,旋轉(zhuǎn)超聲磨削鈦合金磨削力隨著磨料粒度的增大而減小,且試驗(yàn)結(jié)果和仿真結(jié)果具有一致性,說明了多顆磨粒磨具模型、旋轉(zhuǎn)超聲磨削有限元模型具有一定的準(zhǔn)確性,為多顆磨粒磨具旋轉(zhuǎn)超聲磨削的相關(guān)研究提供了新的方法。
[Abstract]:In order to study the effect of abrasive particle size on grinding force of titanium alloy by rotary ultrasonic grinding, irregular polyhedron abrasive particles with geometric characteristics of real abrasive particles were constructed by random space plane cutting hexahedron method. Based on the virtual lattice method, a model of multiple abrasive tools with random distribution of abrasive particles on the end surface of abrasive tools is established. The finite element model of 3D rotary ultrasonic grinding of titanium alloy was constructed by using Deform-3D software. The grinding force simulation value of Ti6Al4V was obtained by using Lagrange increment algorithm. The effect of abrasive particle size on grinding force is obtained and verified by experiments. The results show that the grinding force decreases with the increase of abrasive particle size, and the experimental results are consistent with the simulation results. The finite element model of rotary ultrasonic grinding has certain accuracy, which provides a new method for the research of rotary ultrasonic grinding of multiple abrasive tools.
【作者單位】: 西南交通大學(xué)機(jī)械工程學(xué)院;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(51305369) 中國博士后科學(xué)基金資助項(xiàng)目(2012M521708) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金新教師類課題(20130184120007) 中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(SWJTU11CX023) 教育部重點(diǎn)實(shí)驗(yàn)室開放式基金資助項(xiàng)目(JMTZ201605)
【分類號】:TG580.6
[Abstract]:In order to study the effect of abrasive particle size on grinding force of titanium alloy by rotary ultrasonic grinding, irregular polyhedron abrasive particles with geometric characteristics of real abrasive particles were constructed by random space plane cutting hexahedron method. Based on the virtual lattice method, a model of multiple abrasive tools with random distribution of abrasive particles on the end surface of abrasive tools is established. The finite element model of 3D rotary ultrasonic grinding of titanium alloy was constructed by using Deform-3D software. The grinding force simulation value of Ti6Al4V was obtained by using Lagrange increment algorithm. The effect of abrasive particle size on grinding force is obtained and verified by experiments. The results show that the grinding force decreases with the increase of abrasive particle size, and the experimental results are consistent with the simulation results. The finite element model of rotary ultrasonic grinding has certain accuracy, which provides a new method for the research of rotary ultrasonic grinding of multiple abrasive tools.
【作者單位】: 西南交通大學(xué)機(jī)械工程學(xué)院;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(51305369) 中國博士后科學(xué)基金資助項(xiàng)目(2012M521708) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金新教師類課題(20130184120007) 中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(SWJTU11CX023) 教育部重點(diǎn)實(shí)驗(yàn)室開放式基金資助項(xiàng)目(JMTZ201605)
【分類號】:TG580.6
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