摘要
采用高级计算机辅助设计 (CAD)软件UG ,建立了便于计算的本体三维实体模型 ,通过MSC/NASTRAN有限元计算程序 ,对新型井下闭环可变径稳定器本体进行了强度计算 ,通过有限元分析对本体结构的合理性进行了验证 ,根据有限元计算的结果 ,在各种载荷组合作用工况下 ,可变径稳定器本体的最大应力为 5 6 38MPa时 ,小于许用应力 ,满足强度要求 ,并且有一定的强度储备。可变径稳定器本体的薄弱环节主要集中在槽底两端与筒体连接部位 ,有必要进行局部工艺处理。
A 3-D solid model of the body of the downhole close-loop adjustable stablizer is set up by means of advanced CAD software UG. Through finite element analysis (FEA) program MSC/NASTRAN, the strength of the stabilizer body is calculated, and the rationality of the body structure is verified with FEA. The result of FEA shows that, the maximal stress in the stabilizer body is 56.38 MPa under various loads, less than the allowable stress, which can meet the demand of strength. The weakness of the stabilizer body is found at two ends of the groove and the connection location of the barrel, thereforelocal treatment is needed.
出处
《石油机械》
北大核心
2004年第1期13-14,60,共2页
China Petroleum Machinery
基金
国家 8 63科技攻关项目 (82 0 -0 9-0 1-2B)
