Interface Analysis of Refrigerated Ice and Aluminum Plate
Based on contact finite element analysis,a contact model is developed to study the interface properties of refrigerated ice and aluminum plate in this paper. The electro-impulse deicing (EIDI) excitation,that is,impulse force acting on the interfaces is simulated numerically. The values of adhesive tensile stress,interfacial shear stress and contact status of the contact surface are obtained. Calculations show that when the impulse force is below a certain value,the adhesive tensile stress increases with the impulse force and the interfacial shear stress is significant in magnitude to crack ice. When the impulse force exceeds the certain value,the adhesive tensile stress and the interfacial shear stress decrease to zero. Meanwhile,contact failure and interface fracture result. Thus,the impulse force takes over to remove ice from the adherence layer. Furthermore,the contact status varies from sticking contact to open far-field contact as the impulse force increases. In summary,by considering contact mechanics,the impulse force affects two aspects on the interfaces between the refrigerated ice and the aluminum plate,which involve the enhancement of adhesive action of the interfaces and the removal of the ice.
contact finite element analysis impulse force adhesive tensile stress interfacial shear stress contact status
Qingying Li Chunling Zhu
College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Nanjing,China
国际会议
成都
英文
3011-3016
2010-04-16（万方平台首次上网日期，不代表论文的发表时间）