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为了降低薄壁圆柱壳模态共振条件下的振动幅值与振动应力水平以及提高抗高周疲劳能力,研究薄壁圆柱壳的不同厚度和材料参数对其振动应力的影响,并采用有限元法计算薄壁圆柱壳关键位置节点处的动应力和振动响应.研究结果表明,薄壁圆柱壳存在最优的厚度值,其厚度增加到一定程度可以有效地降低薄壁圆柱壳的动应力.然而,改变薄壁圆柱壳的材料参数对其振动应力的影响较小.
In order to reduce the vibration amplitude and vibration stress level of the thin-walled cylindrical shell under modal resonance condition and to improve the anti-high-cycle fatigue capacity, the effects of different thickness and material parameters of the thin-walled cylindrical shell on the vibration stress were studied. The finite element method The dynamic stress and vibration response at the key position of the thin-walled cylindrical shell are calculated.The results show that there is an optimal thickness for the thin-walled cylindrical shell, and the thickness of the thin-walled cylindrical shell can be reduced to a certain degree, which can effectively reduce the dynamic stress of the thin- , Changing the material parameters of the thin-walled cylindrical shell has less influence on its vibration stress.