Research on Vibration Improvement with Hydraulic Actuator of Diesel Engine Based on Topology Optimization Method
Topology optimization plays an important role in lightweight design of structures,improving the static strength level of struc-tures,and reducing the dynamic response of structures.It aims to reduce the vibration acceleration response of a certain type of diesel engine hydraulic actuator.Based on the support base of the system,topology optimization,harmonic response simulation analysis and vibration testing verification are carried out with the goal or constraint of maximizing the first-order modal frequency and minimizing the volume.The results show that after topological optimization and geometric reconstruction,the hydraulic actuator supporting base reduces the weight of the original base by 3.3%,and the peak acceleration response near the switch sensor on it decreases by 72.1%,while the peak acceleration response(unidirectional)at the top of the driving unit decreases by 30.2%.The vibration response improvement effect is significant.
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