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通过对30CrMnSiNi2A专用螺栓连接件振动摩擦过程的分析,建立了相应的数学模型,利用有限元热力耦合分析技术对大载荷及不同散热条件下的温度场进行了模拟计算,并结合材料的相变特征判断了螺栓材料的适用性。结果表明:在绝热条件下,螺栓结构温度持续升高,直至接近熔点;考虑散热后,螺栓结构仍有部分区域的温度超过了材料的可用温度范围。计算结果对该螺栓结构的设计改型和材料选择提供了重要依据。
Through the analysis of the vibration and friction of 30CrMnSiNi2A special bolted joints, the corresponding mathematical model was established. The temperature field under high load and different cooling conditions was simulated by the finite element method of thermomechanical coupling analysis. Combined with the phase transition characteristics Judge the suitability of the bolt material. The results show that under the adiabatic condition, the temperature of the bolt structure continues to increase until it approaches the melting point. After considering the heat dissipation, the temperature in some areas of the bolt structure still exceeds the usable temperature range of the material. The calculation results provide an important basis for the design modification and material selection of the bolt structure.