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Taking the zero-flush door system of a certain vehicle model as the research object, a finite element model of the glass guide seal is developed. Using MSC.Marc, the compression load of the seal is calculated under varying gaps between the sliding and fixed glass. Simulation results show that when the gap value decreases by 1.2 mm from the design value, the compression will sharply increases from 6.7 N/dm to 28.9 N/dm, which leads to jamming during glass lifting and lowering. Therefore, the critical gap tolerance threshold is determined to be ±1.2 mm. A tolerance model of the zero-flush door system is constructed using the tolerance analysis software 3DCS, and 20 000 virtual assembly simulations are conducted using the Monte Carlo method. It is found that the tolerance fluctuation range of the gap between the sliding glass and the fixed glass is ±1.39 mm, with a 0.89% probability of exceeding the critical value of ±1.2 mm. After optimizing the structure of the zero-flush door system and re-evaluating the tolerance, the fluctuation range is reduced to ±1.1 mm, and the probability of exceeding the critical value is reduced to zero. During the small-batch trial production phase of a specific vehicle model, data were collected from 30 randomly selected samples. The results showed that the gap fluctuation range was ±1.08 mm, and no jamming or sticking occurred during the lifting or lowering of the glass, indicating that the design objectives were achieved. The deep integration of finite element analysis and dimensional tolerance evaluation provides important guidance for the structural design and performance simulation of flexible systems, ensuring a high level of consistency between simulation and real-world performance.
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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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