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摘要：
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为了研究循环式行星滚柱丝杠副在不同轴向载荷和不同工作温度下的变形和接触应力分布规律，以循环式行星滚柱丝杠副中的丝杠为研究对象，采用热力耦合仿真方法，建立了循环式行星滚柱丝杠副的有限元模型，研究不同工况下滚柱丝杠副的轴向载荷和工作温度使丝杠产生的变形和接触应力规律。对比轴向载荷、工作温度、热力耦合3种工况下丝杠的变形和接触应力可见：随着工作温度和轴向载荷的升高，丝杠的变形和接触应力均呈增大趋势，工作温度比轴向载荷引起的丝杠变形更明显，而轴向载荷引起的接触应力较大。丝杠的耦合变形和接触应力比单一的轴向载荷和温升引起的变形更明显。
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To study the distribution laws of deformation and contact stress for circulating planetary roller screw pair under different axial loads and different working temperatures, for the screw in the circulating planetary roller screw pair, the finite element model of the circulating planetary roller screw pair was established by the thermo-mechanical coupling simulation method, and the laws of deformation and contact stress for screw caused by the axial load and the working temperature for roller screw pair under different working conditions were studied. Then, the deformation and contact stress of screw under the three working conditions of axial load, working temperature and thermo-mechanical coupling were compared. The result shows that with the increasing of working temperature and axial load, the deformation and contact stress of screw increase, the deformation of screw caused by the working temperature is more obvious than the deformation of screw caused by the axial load, but the contact stress caused by the axial load is larger. And the coupling deformation and contact stress of screw are more obvious than the deformation caused by a single axial load and temperature rise.
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基金项目：
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陕西省自然科学基础研究计划项目(2019JM-466)；陕西理工大学科研项目（SLGQD1811）
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作者简介：
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李巧（1996-），女，硕士研究生，E-mail：liqiaodelq@163.com；通讯作者：侯红玲(1976-)，女，硕士，教授，硕士生导师，E-mail：xjtuhhl@163.com
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