The vibrating table assesses the ability of various items with a specific load to withstand actual road conditions during road vehicle transportation, so as to obtain the influence of actual road conditions on the items in the laboratory, so as to provide the basis for evaluation or confirmation of the items and their packaging.The simulated three-level road bump test bench is suitable for accelerated road transportation simulation tests of products transported by trucks to determine whether the products can adapt to the expected transportation vibration environment. The accelerated simulation test of road transportation refers to the statistical characteristics test of the cumulative damage of automobile transportation environment by increasing the test value of simulated transportation vibration in order to shorten the time of transportation simulation test on the simulation platform.
Features of Simulation of third- and fourth-level road bump test bench
The simulated three-level road bump test bench will reproduce the vibration environment of the test vehicle during the driving process on the road in the experiment. The broadband random vibration is simulated by the method of sub-band approximation. Each sub-band contains a main natural frequency and satisfies the power spectrum of the sub-band.
Parameters of Simulation of third- and fourth-level road bump test bench
| The maximum weight of the test object (including fastening fixtures, etc.) | 500kg |
| vibration form | Broadband Random Vibration |
| Probability Density Function of Acceleration Instantaneous Value | Approximate normal distribution |
| Simulated road | The intermediate pavement of the third-class highway and the middle and low-level pavement of the fourth-class highway |
| Simulate speed | 35Km/h on medium-grade road for medium-duty trucks; 25Km/h on low-grade road for medium-duty trucks |
| The height of the center of gravity of the specimen | ≤700(mm) |
| Reinforcement level | 0.042361111 |
| Work surface size | 2000×1400(mm) |
| Dimensions | Length 2000×width 1400×height 1000(mm) |
| Motor | 9KW |
| Continuous working time | 8 hours |
| Environmental conditions | Temperature 0-40℃ Humidity≤90%（25℃） |
| Voltage | Three-phase four-wire system 380V±10% 50Hz 9kVA |
| Equipment weight | 2500kg |
