Vibration Fatigue Damage Analysis of Compensator Reinforced by Wire Cloth with Preload

doi:10.3901/JME.2021.15.129

Abstract

Abstract: The fatigue analysis of the compensator reinforced by wire cloth under random vibration conditions and sinusoidal vibration conditions based on the finite element analysis software ABAQUS is carried out. Firstly, the beam element is used to simulate the wire cloth, and different interaction conditions between wire cloth and bellow are set for different load conditions, so the model for random vibration and sinusoidal vibration conditions can be established. The reaction test and modal test are carried out to verify the model. Based on the model, the Dirlik method and fatigue life formula based on Miner linear cumulative damage theory are used to calculate the fatigue damage of steel wire mesh compensator under random vibration and sinusoidal vibration excitation in different directions. The results show that under random vibration conditions and sinusoidal vibration conditions, the compensator has the largest damage level in the horizontal direction (X-direction), and(no fatigue damage occurs within design life (1 min); weak points of the compensator are located near the individual peaks of the compensator and the fixed point of the pipe joint; the damage level under sinusoidal vibration conditions is less than the damage level under random vibration conditions.

Key words: compensator, bellow, fatigue, random vibration, sinusoidal vibration

CLC Number:

O324
TG405

YANG Yan, HE Qilin, ZHU Haiyang, SI Huiliu, WANG Qi, REN Mingfa. Vibration Fatigue Damage Analysis of Compensator Reinforced by Wire Cloth with Preload[J]. Journal of Mechanical Engineering, 2021, 57(15): 129-137.

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