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The stability of thin plates plays an important role in ship design and strength check. To investigate the shear stability of ship's thin plates, a picture frame fixture was designed to conduct an in-plane shear buckling test on square thin plates. In the test, 3D Digital Image Correlation (3D-DIC) was used to obtain mechanical response information such as load-end elongation curve, full-field displacement/strain, etc. The load-end elongation relationship reveals the load-bearing characteristics of the thin plate under in-plane shear condition and determines the critical load for buckling instability. According to the displacement and strain field information of the thin plate at typical moments, it is found that the normal deformation of the thin plate increases with the increase of in-plane shear load. After the instability of the thin plate, there are three half-waves symmetrically distributed along the vertical diagonal, and the internal wave amplitude is greater than the external wave amplitude. The strain waveform and contour plot tend to stabilize during the post-buckling process. By analyzing the response curves of the normal displacement and Mises strain at the key points of the thin plate with time, a new method for identifying the buckling instability of in-plane sheared thin plates was proposed and verified. This study provides a useful reference for experimental research and mechanical behavior analysis of in-plane shear stability for ship’s thin plates.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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