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Outline
To address the severe shock protection requirements of marine heavy equipment, this paper proposes a metal rubber impact isolator featuring both high-temperature resistance and corrosion resistance, capable of meeting operational requirements in complex marine environments. The isolator adopts a series-parallel combination of multiple metal rubber components as its cushioning and energy-absorbing elements, which ensures a high load-bearing capacity while achieving a favorable linear elastic working range. Additionally, the stiffness and damping characteristics are adjusted by means of parallel linear springs. A dynamic model of the impact isolator is established to analyze the influence of stiffness and damping on its shock isolation performance. The mechanical properties and impact resistance of the isolator are verified through experimental tests. Experimental results demonstrate that the isolator exhibits excellent linear elasticity within a stroke of ±9 mm, with an average stiffness of 7.45×106 N/m, an equivalent damping ratio of approximately 0.43, and a limit load capacity of 6.5 t. Under the impact of a 2.2 t drop hammer falling freely from a height of 8.6 mm, the impact loss factor reaches 1.03 and the shock transmissibility is 0.0038, indicating excellent impact resistance performance. This study will provide a reference for the design of impact isolators for marine heavy equipment.
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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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