基于ANSYS的不同排列方式短管蜂窝夹套有限元分析

以短管蜂窝夹套为研究对象,采用ANSYS有限元方法,模拟分析了短管排列方式改变对夹套静应力的影响及热应力-机械场对夹套结构强度的影响,进行了夹套疲劳寿命的校核。研究结果表明,在模拟试验条件下,三角形排列方式短管蜂窝夹套结构的总体应力为212.382 MPa,最大当量应力值为266.512 MPa,内筒体内陷量为0.854 mm,外壳外凸量为0.579 mm;正方形排列方式短管蜂窝夹套结构的总体应力为170.215 MPa,最大当量应力值为199.982 MPa,内筒体内陷量为1.573 mm,外壳外凸量为1.183 mm。2种短管排列方式的蜂窝夹套结构均满足强度要求和疲劳寿命要求。

Finite Element Analysis of Short Tube Honeycomb Jackets with Different Arrangement Forms Based on ANSYS

Taking the short tube honeycomb jacket as the research object, the ANSYS finite element method was used to simulate and analyze the influence of the short tube arrangement on the static stress of the jacket. The influence of the thermal stress-mechanical field on the strength of the jacket structure was carried out and the jacket fatigue life was checked. The results show that under the simulated test conditions, the overall stress of the short-tube honeycomb jacket structure of the triangular arrangement is 212.382 MPa, the maximum equivalent stress value is 266.512 MPa, the internal cylinder internal trapping amount is 0.854 mm, and the outer casing convexity is 0.579 mm;The overall stress of the short-tube honeycomb jacket structure of the square arrangement is 170.215 MPa, the maximum equivalent stress value is 199.982 MPa, the inner cylinder body sinking amount is 1.573 mm, and the outer casing convexity is 1.183 mm. The honeycomb jacket structure of the two short tube arrangements meets the strength requirements and fatigue life requirements.