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本文对上限估算法做了全面综述。对上限法在金属成形中的应用方法——上限模式进行了综合分类,提出三种上限模式的分类方法,即,简化滑移线场的上限模式,具有连续速度场的上限模式和上限法的基元技术;结合实例说明了三种模式的应用方法。对三种模式做了初步评价;并介绍了上限元技术、动可容的流函数场等上限法的新进展。
This article gives a comprehensive review of the upper bound estimation method. A comprehensive classification of the upper limit mode of the application method of the upper limit method in metal forming is proposed, and three types of upper limit mode classification methods are proposed, namely, the upper limit mode of the slip line field is simplified, the upper limit mode of the continuous velocity field and the upper limit method Primitive technology; combined with examples to illustrate the application of the three modes. A preliminary evaluation of the three models was made; new advances in the upper bound method such as the upper limit element technique and the flow function field for dynamic content were introduced.