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riveting Process Modeling and Simulating for Deformation Analysis of Aircraft＇s Thin-walled Sheet-metal Parts

Chinese Journal of Aeronautics 2011年第3期24卷 369-377页

作者： ZHANG Kaifu CHENG Hui LI Yuan The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology Ministry of Education Northwestern Polyteehnical University Xi 'an 710072 China

The riveting joint is one of the important joint methods to permanently fasten two thin-walled sheet-metal parts. It is most ba- sic to efficiently analyze and estimate the deformation of the riveting joint for the performance, fatigue durability and damage of the riveting structure in the aircraft. This paper researches the riveting process mathematics modeling and simulating to more accurately analyze deformation of thin-walled sheet-metal parts. First, the mathematics and mechanics models for the elastic deformation, plastic deformation and springback of the rivet are built by mechanics theory. Second, on the basis of ABAQUS system, a finite element system, an instance made up of the rivet and two thin-walled sheet-metal parts of aluminum alloy is used to analyze and simulate the stress and deformation. What＇s more, a comparison is made between the results obtained by the mathematics and mechanics models and those by finite element method （FEM）. The models are proved true by the calculating and simulation results of the instance.

关键词： riveting deformation mechanics modeling finite element method thin-walled structure aircraft

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Electromagnetic riveting technique and its applications

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Chinese Journal of Aeronautics 2020年第1期33卷 5-15页

作者： Zengqiang CAO Yangjie ZUO School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China

With the increasing applications of novel materials and structures in new-generation aircraft,conventional joining techniques in aircraft component assembly are greatly *** meet those challenges,the electromagnetic riveting(EMR)technique was developed as an advanced joining tool,which exhibits obvious advantages in the assembly of new-generation *** this paper,the riveting principle of EMR was analyzed,and its development history and status were presented in ***,equipment features of three typical EMR systems were ***,three important applications of EMR were covered,i.e.,composite structure riveting,titanium rivet and large-size aluminum rivet riveting,and interference fit bolt ***,a novel strengthening method for mechanical linking holes based on EMR was also presented,which can significantly improve the fatigue behaviors of mechanical ***,open questions in the EMR field were discussed,and some recommendations for future work were also *** paper can be useful for optimizing the joint designs of aircraft components and improving the level of aircraft maintenance.

关键词： Composite Electromagnetic riveting Hole strengthening Interference fit Titanium alloys

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Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

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Advances in Manufacturing 2019年第2期7卷 209-220页

作者： Jiang-Hua Deng Feng Lyu Ru-Ming Chen Zhi-Song Fan School of Mechanical Engineering and Automation Fuzhou University Fuzhou 350116 People's Republic of China

The self-piercing riveting (SPR) process was used to join 2.0-mm-thick aluminum alloy 6061-T6 and 1.2-mm-thick mild steel SPFC340 sheets. SPR joints produced with a conventional flat-bottom die and conicalsection dies were investigated both experimentally and numerically. Lap shear tests were conducted under quasistatic conditions to evaluate the load-carrying capability of these SPR joints. The effect of variation in die geometry (such as variation in the die groove shape, cone height, and die radius) on the main mechanical response of the joints, namely the peak load and energy absorption, was discussed. The results showed that SPR joints produced with the conical-section dies exhibited a failure mode similar to those produced with a conventional die. All the joints failed by tearing of the top steel sheet. Cracks that occurred in the bottom aluminum alloy 6061-T6 sheet around the rivet leg were a result of tangential tensile stress. The cone height of a conical-section die is the most important parameter affecting the surface quality of Al/steel SPR joints. Conical-section dies with a moderate convex can ensure a good surface quality during the SPR process. In addition, SPR joints with single conical-section die allow higher tensile strength and energy absorption compared to those with double conical-section die.

关键词： Self-piercing riveting (SPR) Aluminum/steel dissimilar sheet Conical-section die Lap shear test

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Modeling and simulation of percussive impact for robotic riveting system

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Advances in Manufacturing 2014年第4期2卷 344-352页

作者： Shuai Guo Song-Liang Nie Feng-Feng Xi Tao Song Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai University Department of Aerospace Engineering Ryerson University

riveting is one of the major joining methods used in assembly, and the robotic riveting has been grad- ually introduced into aircraft industry. In this paper, a method is presented for modeling and simulation of per- cussive robotic riveting. In percussive riveting, vibration always exists. When an impact force is employed, a forced vibration will be induced. If it resonates with a robot nat- ural frequency, the vibration will cause damage to the robot. The main content of this paper is divided into three parts. Firstly, a robot dynamic model is established to compute the driving torque for each joint. Secondly, vibration responses under impact are analyzed for the percussive riveting process. Thirdly, the effect of riveting on robot vibration is studied over the robot workspace. The purpose of this paper is to discuss the suitable regions for riveting where the robot vibration is very minimal. It is shown that based on the presented method an appropriate trajectory can be planned for robotic riveting.

关键词： Robotic dynamics Analysis Vibrationresponse Impact force riveting

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