弹塑性有限元法是六十年代末由P.V.马卡尔(Marcal)和山田嘉昭导出的弹-塑性矩阵而发展起来的。采用弹一塑性有限元法分析金属成形问题,不仅能按照变形路径得到塑性区的发展状况,工件中的应力、应变分布规律以及几何形状的变化,而且还能有效的处理卸载问题,计算残余应力和应变。但弹一塑性有限元法要以增量方式加载,而每次增量加载的步长又不能太大,这就导致计算工作量大、计算时间长。
...弹塑性有限元法; 工艺参数[gap=1008]Key words: mean-square deviation of velocity; profile extrusion; elastoplastic finite element method; technological parameter..
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采用弹塑性有限元法对斜坡的初始应力场特征进行模拟研究。
Then, the initial stress field of the slope is simulated by means of elastic-plastic finite element.
热弹塑性有限元法和固有应变法是焊接变形预测的两种主要数值方法。
Thermal-elastic-plastic and inherent strains FE methods are two means, which have been applied to the prediction of welding deformation.
本文用三维弹塑性有限元法计算了含圆孔对称复合材料层板的层间应力分布。
In this paper, the interlaminar stress distributions of symmetric composite laminates with a hole are predicted by the three-dimensional elastoplastic finite element method.
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