一种耐压结构典型节点压缩蠕变失效行为的测试方法
By designing irregularly shaped specimens with grooves and local protrusions and using a biaxial loading method, the problem of creep assessment of deep-sea pressure-resistant structures under multiaxial stress was solved, achieving efficient and accurate creep testing and ensuring the safety and reliability of deep-sea equipment.
CN122108790BActive Publication Date: 2026-07-17ZHEJIANG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG UNIV
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
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Figure CN122108790B_ABST
Abstract
本发明涉及耐压结构力学测试技术领域，尤其涉及一种耐压结构典型节点压缩蠕变失效行为的测试方法，包括：基于实际耐压装备的形状尺寸建立宏观有限元模型，按照深海极端环境的实际服役工况进行长时服役仿真计算；根据耐压装备结构的拓扑特点、实际物理尺寸，以及双轴加载蠕变设备的夹持 / 测试能力，设计一种专用于模拟典型节点的缩比异型试样；基于长时服役条件下的仿真计算结果，提取具备加强筋耐压结构在实际服役工况下的最大危险区域，即缩比异型试样的典型节点，获取该特征区域的三向应力水平；结合耐压装备结构在极端服役环境下历史失效案例进行对比验证，确定最终的断裂失效危险位置。本发明提升了试验数据的有效性及测试结果的稳定性。
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