摘要
销-盘磨损试验涉及复杂的热-应力-磨损耦合现象。基于广义Archard磨损模型和商用有限元软件ABAQUS,开发模拟销-盘磨损试验过程中热-应力-磨损耦合模拟分析的顺序耦合方法。分析销-盘试验的瞬态温度场,将温度场作为热载荷分析摩擦副的应力-磨损耦合问题;分析过程中考虑温度对摩擦副材料的力学和热学性能的影响以及广义Archard磨损系数和摩擦因数对温度和接触压力的依赖性。热传导分析考虑摩擦生热、销-盘接触传热、各个表面与空气之间的强制对流换热、自然对流换热以及热辐射。将该方法用于销-盘磨损试验的模拟,得到温度场、接触压力和磨损量的演变过程,揭示温度场对接触和磨损的影响规律,仿真结果与试验结果吻合良好。
Pin-on-disc wear experiments involve complicated coupled heat transfer, stress and wear phenomenon. Based on generalised Archard wear model and commercial finite element analysis（FEA） software ABAQUS, a sequentially coupled analysis（SCA） method for simulating the coupled multi-fields problem is developed. The SCA method is applicable to 3-dimensional transient dry sliding problems. In SCA, the temperature field is simulated first by transient heat transfer procedure, after which the coupled contact and wear problem between the contact interface is analysed under the influence of thermal load caused by the precalculated temperature. This method also includes the influence of temperature on mechanical and thermal property of mating materials, and the dependency of wear coefficient and friction coefficient on temperature and contact pressure is involved as well. Thermal boundary conditions such as frictional heating, contact conductance, forced and natural convection and radiation are included in the heat transfer analysis. A pin-on-disc wear experiment is simulated by SCA method to obtaln the evolution of temperature field, contact pressure and wear. The FEA result is in good accordance with the measured one, and illuminates the influence of temperature field on contact and wear behaviour between the pin and disc interface.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2015年第8期107-115,共9页
Journal of Mechanical Engineering
基金
国家自然科学基金资助项目(51175280)
关键词
销-盘磨损试验
温度场
应力
磨损
有限元
pin-on-disc wear experiments
temperature field
stress
wear
finite element
