锚杆尾部螺纹联接的试验研究
Experimental Study on Screw Joint of Bolt Tail
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摘要: 针对井下锚杆尾部螺纹联接存在脱扣的现象，采用数值模拟和实验室试验的方法，研究了锚杆杆体屈服强度为500 MPa时，不同螺母强度、齿高、厚度和形状对螺纹联接的影响，分析了螺母强度等级分别为5级、6级、8级，齿高分别为0.6H、0.7H、0.8H、0.875H，螺纹厚度分别为24 mm和30 mm及其法兰螺母对螺纹联接的影响，得出锚杆屈服强度为500 MPa时，螺母强度等级不低于6级，齿高不低于0.7H，厚度为24 mm的螺母即可满足锚杆强度的需要，法兰螺母会使得各圈螺纹牙受力更加均匀。Abstract: For the tripping phenomenon existing in bolt tail screw connection, numerical simulation and laboratory test are used to study the influence of different strength, tooth height, thickness and shape of nuts on screw joint when the bolt yield strength is 500 MPa. The paper analyzes the influence of flange nuts with nut strength level of 5, 6 and 8, tooth height of 0.6H, 0.7H, 0.8H and 0.875H respectively, thread thicknesses of 24 mm and 30 mm on screw joint. The results show that when bolt yield strength is 500 MPa, the nut strength level is not less than 6, the tooth height is not less than 0.7H, thickness of 24 mm nut can meet the needs of bolt strength, and flange nuts will make each turn stress of thread more even.
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Keywords:
- bolt strength /
- ANSYS /
- nut /
- bolt thread /
- screw joint
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[1] 康红普,王金华. 煤巷锚杆支护理论与成套技术[M].北京: 煤炭工业出版社, 2007. [2] Stoeckly E E,Macke H J. Effectual taper on screw thread load distribution[J].ASME,1952,74:103-112. [3] Kenny B,Patterson E A.Load and stress distribution in screw threads[J]. Experimental Mechanics,1985,25:208-213. [4] Sopwith D G.The distribution of load in screw threads[J]．Proc．Inst．Mech．Engrs,1948，159：373-383. [5] Bretl J L，Cook R D．Modeling the load transfer in threaded connections by the finiteElement method[J]．Int．J．Num．Mech．Eng,1979,14:1359-1377. [6] 赵华.螺纹管接头的弹塑性应力分析[J].机械工程学报,1997,33(1):87-92. [7] 李皓月,周田朋. ANSYS工程计算应用教程[M].北京:中国铁道出版社,2003. [8] 赵华.螺纹管接头的弹塑性应力分析[J].机械工程学报,1997,33(1):87-92. [9] 张焱,陈平,施太和.深井中钻铤螺纹联接的强度研究[J].探矿工程(岩土钻掘工程),1998(5):23-25. [10] 李润方,林腾蛟.石油钻杆联接螺纹弹塑性接触有限元分析[J].石油矿场机械,1998(6):48-50. [11] 孟宪志,康红普.锚杆螺纹与螺母联接力学特性的数值模拟研究[J].煤矿开采,2013,18(1):54-57. -
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