基于APDL的损伤缺陷对K形井架受力影响分析  

Load Analysis of K Derrick with Initial Defects Based on APDL

作　　者：魏辽[1] 颜廷俊[1] 刘宇[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《石油矿场机械》2010年第3期5-8,共4页Oil Field Equipment

基　　金：中石油科技创新基金项目"基于优化的在役石油井架承载能力检测仿真研究"(2008D-5006-07-04)

摘　　要：利用APDL参数化设计语言建立了含损伤缺陷的K形井架参数化模型,并将其结果保存为数据文件。仿真结果表明:杆件截面锈蚀对杆件本身应力产生较大影响;局部杆件弯曲使该杆件自身应力增大,并导致与其连接的上端杆件应力减小,下端杆件应力增大;井架大腿整体弯曲会导致其应力增大,且井架前腿的弯曲比后腿弯曲更加危险;井架支座沉陷会导致下沉侧大腿应力减小,另一侧大腿应力增大,支座沉陷对井架整体的受力影响较明显。APDL was used to change the model parameters and build the parametric model of K derrick including damage deficiencies.The simulation results indicated that corrosion of bar lead to the increase of its own stress;bending of local bar could increase its own stress,decrease the stress of upper linked bar and increase the stress of lower linked bar;the bending of whole derrick legs could increase its stress,the bending of the frontal legs was more dangerous than back;the settlement of substructure can decrease the stress of submerged leg,and increase the stress of the other leg.Substructure settlement could make more stress of the derrick than other deficiencies.

关 键 词：K形井架 承载能力 有限元分析 APDL 损伤缺陷 

分 类 号：TE923[石油与天然气工程—石油机械设备]