以下为句子列表：
英文: General rules were validated and a new rule was discovered: i. e. the shape 0f these two stress fields are same, the equivalent stress of the round corner in the bottom reached its maximum at the first phase, the equivalent stress of the edge of hole reac
中文: 验证了一般规律，也发现了新规律，即两者的应力场形状相同，底部圆角处等效应力在变形第1阶段最大，孔口边缘处等效应力最大出现在变形第3阶段，第4阶段（变形终了时）锥形冲头翻边的等效应力比柱形冲头翻边时下降更大。
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英文: RESULTS: With the loss of the alveolar height, the maximum equivalent stress and the principle stress of the upper central incisor periodontium increased.
中文: 结果：随着牙槽骨高度的降低，上中切牙牙周膜最大等效应力和主应力逐渐增大。
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英文: Through using ABAQUS software, a numerical simulation of equivalent stress field of flanging deformation process with cone-shaped punch was carried out, and compared with simulation of flanging deformation with column-shaped punch.
中文: 摘要利用ABAQUS商用软件，对锥形冲头翻边变形过程的等效应力场进行了数值仿真，并与柱形冲头的翻边变形仿真进行了对比。
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