forming limit stress diagram

基本解释

Some foreign scholars developed the concept of Forming Limit Stress Diagram(FLSD) on the basis of FLD. FLSD is considered as strain path independent.
一些国外学者在板料成形极限图的基础上提出了板料应力成形极限图（FLSD）的概念，并认为板料应力成形极限图具有与路径无关的特点。
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Forming limit diagram is used for analyzing sheet forming in finite element analysis software have proposed forming limit stress diagram which is not relies on the loading path.
但它是依赖于加载路径的，用它来分析多道次板成形是不合适的，于是人们提出了与加载路径无关的应力成形极限图。
The results show that the FLSDs obtained under the different loading paths are approximate to one curve, which means that the stress-based forming limit diagram is independent of strain paths.
研究结果表明：不同加载路径下得到的成形极限应力图接近于一条曲线，即基于应力的成形极限图是与加载路径无关的；