small-scale bench test

The pull-out failure and mechanism were studied in detail with elastic-plastic finite element method, and then full-scale tests were performed to show the joint strain distribution and deformation during pull-out process, and validate the FEA results.

利用弹塑性有限元法,研究了圆螺纹套管接头发生滑脱失效的过程与机理,然后通过全尺寸试验,分析了这种接头在失效过程中的应变分布及变形情况,并验证了有限元结果。