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    题名 作者 年代 出处 被引量
1基于盲孔法的网架焊接空心球节点球面焊趾处残余应力测试显示文摘基于盲孔法对3种规格的焊接空心球节点球面焊趾处焊接残余应力进行了试验测量,根据常规模型和Kirsch理论解对比计算了本次试验选取的应变片的应变释放系数。依据Scara-Mangas经验公式对计算得到的球面径向、环向焊接残余应力进行塑性修正,最终得出球面焊接残余应力分布图。探讨了焊接残余应力对工程领域中节点疲劳的影响。李洋 雷宏刚 2020科学技术与工程2020,20,7:4
2铝合金大型锻件淬火过程的有限元模拟显示文摘采用Deform V11有限元软件,计算了T形7N01铝合金锻件的表面综合换热系数,仿真模拟了锻件淬火过程中的温度场、应力场与形变位移变化规律,分析了温度与热应力对锻件淬火形变的影响与作用机制。结果表明,淬火初期因温度梯度(最大温差达225℃)与热应力巨大差异,锻件肋板一侧在淬火时间为10 s时产生了最大程度的弹性与塑性变形,远大于无肋一侧,弯曲曲率增大;淬火中期锻件主要发生弹性形变,厚度大的肋板一侧收缩变形加剧,曲率变小,50 s时锻件基本不再变形;淬火后期阶段热应力趋于零,锻件冷却产生微量弹性形变,淬火结束后,锻件整体产生趋向肋板一侧的塑性弯曲变形,曲率半径大于加热前。于春鹏 王立强 汤贞涛 陈丽丽 2021金属热处理2021,46,9:2
3Research on Residual Stress Measurement of Magnesium Alloy Cabin Castings显示文摘Owing to the nonuniform wall thickness and complex internal structure,the measurement of the residual stress on magnesium alloy cabin castings is complex and difficult extremely,and thus seldom research has focused on the residual stress of magnesium alloy castings.In this paper,the blind-hole method,the X-ray diffraction(XRD)method,and the contour method are used to conduct comprehensive and systematic residual stress tests for a magnesium alloy cabin casting.The results show that the residual stress on the surface of the casting obtained by the blind-hole method is between-20.03 MPa and-71.03 MPa,the residual stress obtained by the XRD method is between-26.01 MPa and-87.11 MPa,while the residual stress obtained by the contour method is between-45.89 MPa and 76.87 MPa.The study can lay a basis for the subsequent research of magnesium alloy cabin castings,and provide a reference for the residual stress test of magnesium alloy castings.YIN Lan FANG Yu WU Yunxin ZHANG Tao LI Chengxin GONG Hai 2022上海航天(中英文)2022,39,1:0
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