采用塑性增量理论，建立了波纹管液压胀形的应力、应变数值计算方法，解决了波纹管液压胀形工艺的理论计算问题。
By plasticity increment theory, the stress strain numerical calculate methods of bellows bulge forming, solvers theory calculating problems of bellows bulge forming technology are put forward.
采用金属体积不变条件，推导出金属波纹管液压胀形工艺中的管坯长度计算公式，实验表明，计算公式准确实用。
In this paper, the blank length formulate of bellows hydraulic shaping are derived. Verified by experiments, these formulate are very accurate and effective.
在该理论分析基础上，制定并实现了小变薄率胀形波纹管的特殊液压胀形工艺的新构思，成功地研制出了小变薄率波纹管。理论计算与试验结果相吻合。
Based on this theory, the new conceit of bulge forming technology of minimal thinned rate bellows is formulated and realized, minimal rate bellows is developed successfully.
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