CAJ | 학술논문

基于ABAQUS软件，采用有限元模拟计算的方法对A357铝合金大型复杂薄壁构件的淬火过程进行研究。通过采用传统的反传热方法，对不同淬火介质在不同温度下的换热系数进行精确求解。精确的换热系数确保对A357铝合金大型复杂薄壁构件淬火过程中温度场预测的准确性。采用3种淬火介质(水、机油，5%-UCON淬火试剂A)。通过综合考虑淬火介质及温度因素，对薄壁构件的残余应力及变形的分布和大小进行有限元预测，得到构件淬火结束后的最大残余应力及变形。
기우ABAQUS연건，채용유한원모의계산적방법대A357려합금대형복잡박벽구건적쉬화과정진행연구。통과채용전통적반전열방법，대불동쉬화개질재불동온도하적환열계수진행정학구해。정학적환열계수학보대A357려합금대형복잡박벽구건쉬화과정중온도장예측적준학성。채용3충쉬화개질(수、궤유，5%-UCON쉬화시제A)。통과종합고필쉬화개질급온도인소，대박벽구건적잔여응력급변형적분포화대소진행유한원예측，득도구건쉬화결속후적최대잔여응력급변형。
The quenching processes of A357 aluminum alloy large complicated thin-wall workpieces were investigated by finite element method (FEM) simulation based on ABAQUS software. Heat transfer coefficients of different quenchants were accurately calculated by a traditional method of inverse heat transfer. The accurate heat transfer coefficients of different quenchants can ensure accuracy FEM results of temperature field of A357 alloy large complicated thin-wall workpieces during quenching. The quenchants of water, machine oil and 5%-UCON quenchant A were used. Quenching residual stress and distortion were investigated by considering the influence of quenchant and quenchant temperature. The maximum residual stress and distortion of quenched workpieces were predicted by using FEM simulation based on ABAQUS software.