摘要
以承受20 MPa爆发压力的铝合金气缸盖为研究对象进行结构设计开发。采用有限元仿真分析的方法对5种不同方案的气缸盖刚度和强度进行数值模拟,并在综合性能较好的F0方案气缸盖上开展电测试验和疲劳试验。结果表明,气缸盖主承力结构的调整对气缸盖各处最大主应力有不同的影响规律;F0方案气缸盖具有一定的高周疲劳可靠性;电测试验结果与仿真结果基本吻合,验证了仿真分析方法的正确性;疲劳试验验证了优化后的气缸盖可满足20 MPa爆发压力的设计需求。
With the Al -alloyed cylinder head withstanding the peak pressure of 20 MPa as research object to conduct structural design, the stiffness and strength of five cylinder heads are numerically simulated by FEA, and the electromotive test and the fatigue test of F0 cylinder head, which has good comprehensive performance, are carried out. The results show that different effects on the maximal principal stress of the cylinder head are obtained by changing the main load bearings force; and the F0 cylinder head has good high cycle fatigue reliability; the electromotive test results are basically identical with simulation, proving correctness of the simulation method; the fatigue test verifies that the optimized cylinder head can satisfy the design requirement of 20 MPa firing pressure.
出处
《汽车技术》
北大核心
2014年第11期21-24,共4页
Automobile Technology
基金
国家"863"高技术项目"中重型高功率密度高效清洁柴油机关键技术"(No.2012AA111709)
关键词
气缸盖
高载荷
刚度
强度
Cylinder head High loads Stiffness Strength
