轴压松弛圆柱螺旋弹簧载荷分量数值模拟研究  

Numerical Simulation of Load Components of Cylindrical Helical Spring With Axial Compression Relaxation

作　　者：彭琛 桂超 李锵 刘志强 师俊平[3] PENG Chen;GUI Chao;LI Qiang;LIU Zhi-qiang;SHI Jun-ping(Yangjiang Nuclear Power Co.,Ltd.,Yangjiang 529500;Suzhou Nuclear Power Research Institute Co.,Ltd.,Suzhou 215000;Department of Engineering Mechanics,School of Civil Engineering and Architecture,Xi'an Universityof technology,Xi'an710048)

机构地区：[1]阳江核电有限公司,阳江529500 [2]苏州热工研究院有限公司,苏州215000 [3]西安理工大学土木建筑工程学院工程力学系,西安710048

出　　处：《环境技术》2024年第10期260-271,共12页Environmental Technology

摘　　要：螺旋弹簧高温轴压松弛试验难以监测加载端载荷分布及变化,利用有限元可模拟弹簧加载端载荷分量变化,有助于改进该试验加载方案。本文在高温下保持轴压变形不变,基于蠕变模型模拟了圆柱螺旋弹簧载荷变化,分析了温度、簧圈直径、簧丝直径对轴压载荷的影响,特别是对载荷分量的影响。发现温度与载荷分量负相关,但与载荷松弛剧烈程度正相关。簧圈直径与各载荷分量正相关,与各载荷分量松弛剧烈程度负相关。簧丝直径与各载荷分量松弛剧烈程度正相关,但当载荷分量绝对值很小时松弛现象消失。弹簧载荷越大,越需考虑各载荷分量对弹簧发生蠕变松弛的影响。这对于弹簧蠕变松弛试验设计及影响因素分析具有参考价值,对功能性弹簧设计有指导意义。The monitoring of load distribution and changes at the loading end duiring high temperature axial compression relaxation testing of helical springs presents a significant challenge.Utilizing the finite element method to simulate variations in load components at the loading end can enhance the test loading scheme.In this study,a constant axial compression deformation was maintained under high temperature conditions,and the creep model was employed to simulate load variation in cylindrical helical springs.The effects of temperature,spring ring diameter,and spring wire diameter on axial compression loads were analyzed,with particular emphasis on their influence on load components.It was observed that temperature exhibits a negative correlation with load components but a positive correlation with load relaxation intensity.Spring ring diameter shows a positive correlation with each load component while displaying a negative correlation with relaxation intensity for each load component.Spring wire diameter demonstrates a positive correlation with relaxation intensity for each load component;however,when the absolute value of the load component becomes very small,relaxation phenomena disappear.When dealing with higher spring loads,it becomes crucial to consider the influence of each individual load component on creep relaxation in springs.These findings provide valuable insights for designing spring creep relaxation tests and analyzing influencing factors while offering guidance for functional spring design.

关 键 词：圆柱螺旋弹簧 轴向压缩 蠕变 应力松弛 

分 类 号：O344.6[理学—固体力学]