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�������պ����ѧѧ�� 2007, Vol. 33 Issue (10) :1251-1255    DOI:
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Straightening technique for distorted aeronautical monolithic component based on finite element numerical simulation
Zhang Hongwei, Zhang Yidu, Wu Qiong, Zhao Xiaoci*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� For aeronautical monolithic component, because of the complication of machining distortion, straightening parameters are difficult to be gained quantitatively in the process of distortion correcting that inevitably leads to the distorted components discarded as useless. The research on straightening technique based on finite element simulation was carried out by integrating machining distortion with straightening process. Correlated key technologies were studied, including finite element modeling for straightening, numerical simulation method for straightening process, determination of straightening parameters, different kinds of straightening load, the law of residual stress redistribution due to straightening load and so on. The straightening process for aeronautical monolithic component was simulated using finite element analysis software with these technologies. The results show that the integration of machining distortion simulation and straightening simulation is an efficient way to research on straightening technology. In the straightening process, the prime distorted model can be extracted from machining distortion simulation. The analysis for loading and unloading was carried out to simulate straightening process and straightening parameters can be obtained quantitatively.
Keywords�� straightening   machining distortion   finite element method   numerical simulation     
Received 2006-09-28;
About author: �ź�ΰ(1978��),��,ɽ��������,��ʿ��,zhanghw@me.buaa.edu.cn.
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�ź�ΰ,���Զ�,����,������.��������Ԫ����ĺ�������ṹ������У��[J]  �������պ����ѧѧ��, 2007,V33(10): 1251-1255
Zhang Hongwei, Zhang Yidu, Wu Qiong, Zhao Xiaoci.Straightening technique for distorted aeronautical monolithic component based on finite element numerical simulation[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(10): 1251-1255
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