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利用计算机工作站对复合材料强化后的活塞进行温度场、热应力、热变形、机械应力、机械变形有限元分析,探讨复合材料强化的方式与结构尺寸对温度场与应力分布及变形影响的趋势。复合材料增强活塞技术已在几种车用发动机活塞上进行了推广应用,经有限元分析、机械物理性能的测定及发动机性能的测试,表明复合材料增强活塞结构设计合理,热疲劳强度和抗热应力、机械应力和变形的能力得到较大的改善,活塞工作能力提高,能更好地满足汽车发动机增压强化的需要。复合材料增强活塞技术有着广泛推广应用的前景。
The finite element analysis of temperature field, thermal stress, thermal deformation, mechanical stress and mechanical deformation of the composite reinforced piston was conducted by computer workstation. The finite element analysis of the composite material strengthening mode and structure size on the temperature field and stress distribution and deformation was conducted. The composite reinforced piston technology has been popularized and applied on several automotive engine pistons. The finite element analysis, the measurement of mechanical and physical properties and the test of the engine performance show that the composite reinforced piston structure has a reasonable design, thermal fatigue strength and heat resistance Stress, mechanical stress and deformation ability to be greatly improved, improve the working ability of the piston, can better meet the needs of the car engine booster. Composite reinforced piston technology has broad prospects for the promotion.