摘要
结合大功率柴油机性能强化的数值计算,在考虑螺纹的基础上建立了气缸盖螺栓的CAD装配体模型;并采用接触分析法对螺栓的应力应变进行了三维有限元计算,对螺栓的疲劳强度进行了校核。分析结果表明,螺纹受力仍处于弹性变化范围,可采用转角法进一步拧紧。
With the numerical simulation of heavy-duty diesel engine to strengthen performance, a CAD assembly model of cylinder head bolt is built based on the thread. The 3-D finite element model of bolt is calculated by the method of contact analysis, and the fatigue strength of bolt is checked. The results show that the stress of bolt is still in the range of elastic change, so the bolt can be twisted by the swung angle method.
