空军工程大学学报（自然科学版）Issue(1)：87-90,4.DOI:10.3969/j.issn.1009-3516.2014.01.0019
螺距和孔隙对螺栓连接自松弛的影响
The Effect of Thread Pitch and Clearance on Self-loosening of Bolted Joints
摘要
Abstract
Aimed at studying the effect of thread pitch and clearance on self-loosening of bolted joints,this paper builds up a three dimensional FEA model of bolted joints in which thread is taken into consideration, and the simulation of self-loosening of bolted joints under transverse vibration is conducted based on the Newmark algorithm.Then the effect of thread pitch and different clearance on self-loosening of bolted joints is analyzed.The results show that the preload of bolted joints with coarse thread pitch falls faster than the preload of bolted joints with fine thread pitch,and the slippage of bolted joints with coarse pitch is acuter than the slippage of bolted joints with fine pitch,thus the self-loosening of bolted joints with fine thread pitch is more difficult to happen;and the larger clearance of bolted joints,the more rapidly the pre-load falls and the acuter the slippage is.The self-loosening of bolted joints with larger clearance is easier to happen.关键词
螺栓连接/自松弛/螺距/孔隙/有限元Key words
bolted joints/self-loosening/thread pitch/clearance/FEA分类
通用工业技术引用本文复制引用
王崴,徐浩,马跃,刘晓卫,徐晓东..螺距和孔隙对螺栓连接自松弛的影响[J].空军工程大学学报（自然科学版）,2014,(1):87-90,4.基金项目
国家自然科学基金资助项目(51075395) （51075395）
