【摘 要】
：
A spatial finite element model for vibration analysis of crankshaft system was proposed. The crankshaft body was simplified as spatial rigid frame by using beam
【机 构】
：
State Key Lab. of Vibration,Inst. of Internal Combustion Engine
【基金项目】
：
the National Natural Science Foundation of China
论文部分内容阅读
A spatial finite element model for vibration analysis of crankshaft system was proposed. The crankshaft body was simplified as spatial rigid frame by using beam elements based on Timoshenko beam theory. The main bearings in system were simplified as linear springs and dashpots. The natural frequencies of the crankshaft system of a four in-line cylinder engine were calculated and compared with the analytical and experimental values available in other publications. In order to simulate the motion of operating crankshaft system, the gas forces, rotating masses and reciprocating masses were considered, the crankshaft and main bearings were coupled in a rotating coordinate system, and a dynamic model for vibration analysis of crankshaft system was established. By applying the dynamic model, the influence of the mass and moment of inertia of front pulley on the behavior of crankshaft vibration was investigated.
其他文献
Unbalanced multi-stage logistics systems are optimized using an improved genetic algorithm based on the Prüfer number and the effective capacity coding. The im
In order to increase the efficiency and reliability of the dynamic analysis for flexible planar linkage containing the coupling of multi-energy domains, a metho
A probabilistic risk assessment procedure is developed which can predict risks of explosive blast damage to built infrastructure,and when combined with life-cyc
The strapdown homing guidance system for some ammunition was mainly studied. A strong tracking Kalman filter was designed for the strapdown homing guidance syst
The identification of the critical infrastructure has shown that the build civil engineering infrastructure is almost involved everywhere,even with the IT-infra
With the idea of the phononic crystals, the beams with periodic structure are designed.Flexural vibration through such periodic beams composed of two kinds of m
The formation and growth of thermal fatigue crack in chromium wear resistant cast iron was investigated, and the effect of hot deformation on the crack was anal
目的探讨老年人脑腔隙梗死(腔梗)与胰岛素抵抗(IR)的关系。方法对354例受试者行空腹血糖(FPG)、甘油三脂(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固
An optimization method was presented to be easily applied in retargetable simulator. The substance of this method is to reduce the redundant information of oper