Investigation of high hydrostatic experiments and ultimate load
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摘要: 【目的】旨在实现水中高静压环境下的结构应变的准确测试，同时探究复合壳体在水中高静压环境下极限承载能力大小以及不同初始缺陷的影响。【方法】开展了复合壳体水下高静压试验，提出了基于高压防护装置的水下高静压3D-DIC（Digital Image Correlation）测试方法，获得了结构在15MPa水压下的应变。并与有限元模型模拟结果对比来验证3D-DIC测试系统在水中高静压环境下的可行性以及数值模型的正确性。在此基础上，针对不同初始缺陷条件对复合壳体极限承载能力的影响展开了仿真计算。
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关键词:
- 水中高静压试验 /
- 3D-DIC测试系统 /
- 几何缺陷 /
- 极限承载能力
Abstract: [Objectives] The aim is to propose a structural strain test method under high hydrostatic pressure environment in water. And investigate the buckling pressure of composite shells under high hydrostatic pressure environment in water and the effect of different initial defects. [Methods] A high hydrostatic pressure experiment was conducted on a composite shell, and the strain of the structure was measured under 15 MPa hydrostatic pressure using the deep-water 3D-DIC (Digital Image-
Key words:
- high hydrostatic pressure experiment /
- 3D-DIC test /
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