摘要
基于弹性接触理论,应用数值方法编制FORTRAN程序计算了调心滚子轴承的接触应力。轻载下其接触应力计算值和Hertz理论的计算结果相差仅为0.11%,从而验证了程序的正确性。并据此计算了其他更高载荷水平下的轴承接触应力。当轴承施加0.15Cr载荷时滚子有效长度利用率过低;载荷增加到0.3Cr时滚子的有效长度能被有效利用;当载荷进一步增加时开始出现边缘应力集中。通过改变滚子、滚道的密合度和优化滚子端部修形半径,以充分利用滚子全长,可在极重载下球面滚子-滚道接触区域中间应力增加很小的情况下大大减小边缘的应力集中。
Based on elastic contact theory,a numerical method is used to develop a FORTRAN program to calculate the contact stress of spherical roller bearings,the difference is only 0.11% when compared with the contact stress which is calculated by Hertz theory,so the correctness of the program is verified.Then the contact stress of bearings is calculated under heavier load by the program.The results show that the effective length of the roller is not fully utilized under 0.15Cr;when the load increases to 0.3Cr,the effective length of the roller can be used fully;the load keeps on increasing,the edge stress concentration appears.The length of the roller is fully used by changing the conformity of roller-race and optimizing the chamfer of roller＇s edge,so that the edge stress concentration under extremely heavy load is significantly reduced while increasing the stress in the middle of the contact area of spherical roller-race a little.
出处
《轴承》
北大核心
2010年第4期1-6,共6页
Bearing
基金
科技型中小企业技术创新基金(08C26213301890)
关键词
调心滚子轴承
重载
接触应力
spherical roller bearing
heavy load
contact stress
