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在对发动机配气机构设计及优化改进中,进行各部件结构、振动和疲劳分析时,必须准确获得它们在发动机工作过程中的边界条件。基于GT-SUITE系列软件,首先建立发动机数值模型并在GT-POWER中进行模拟仿真,获得气缸压力和温度条件,为配气机构动力学数值分析提供使用环境数据,然后进一步建立详细的配气机构数值模型,利用GT-VTRAIN进行动力学分析,得到配气机构相关部件的温度、运动速度、加速度和受力情况等数据,为后续进行相应的结构分析和优化设计提供边界条件和载荷工况。
In the design and optimization of the engine valve train, the structure, vibration and fatigue analysis of the components must be accurately obtained when they work in the engine boundary conditions. Based on the GT-SUITE series software, the numerical model of the engine is first established and simulated in GT-POWER. The pressure and temperature conditions of the cylinder are obtained, the environmental data are provided for the numerical analysis of the valve train dynamics, and then the detailed valve train The numerical model is used to analyze the dynamics of GT-VTRAIN. The temperature, moving speed, acceleration and stress of the relevant components of the valve train are obtained. The boundary conditions and load conditions are provided for the subsequent structural analysis and optimization design.