Abstract
According to the purpose and requirements of a virtual test, the complex mechanism of the combine harvester was abstracted and simplified to some extent during modeling, but in order to guarantee the closeness between simulation result and the reality, attention was paid to keeping the total mass of all components close to the actual mass of the combine harvester and reducing workload during modeling. The vibration test of the cutting platform includes horizontal vibration and vertical vibration. The test conditions are that: the combine harvester is still and has no load and only the engine runs, or the engine and the cutting knife run simultaneously. Three horizontal vibration testing points and three vertical vibration testing points were arranged on the side of the cutter rack of the cutting platform, the side of the shield of the cutting platform and the side of the gap bridge.
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