为了进一步提高接头的密封能力，设计了一种斜面台肩结构来改善钻杆接头的密封性能，与api结构相比有效的提高了密封性能。
A structure of incline plane shoulder has been designed to improve the sealing performance of the joint and it improved the sealing ability effectively compared with the API joint.
提出考虑焊接接头疲劳损伤约束的焊接结构抗疲劳优化设计方法。
Optimization design method of welded structure was put forward with welded joint fatigue damage as constraints.
介绍复合材料承力接头设计的相关理论及应用状况，包括设计基础、结构形式、强度分析、相关试验等。
The related theory and application of bearing - load composite joints are briefly reviewed, including design basis. structure. strength analysis. related testing and so on.
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