求翻译：本論文考慮材料降伏面扭曲現象，以準確探討結構承受循環負荷作用下之彈塑性行為。有限元素商業化分析軟體具有泛用之彈塑性分析功能，惟均尚未能提供考慮降伏面扭曲的模擬功能。是什么意思？

In this paper, considering the material yield surface distortions to accurately investigate the structure to withstand elastoplastic behavior under cyclic loading effect.

The paper consider materials vanquish face distortions, to standards are explored cycle structures of load role of plastic bullets. Limited commercialization elements analysis software used in bombs a Pan plastic analysis capabilities, but are not available to vanquish face distorted simulation.

The present paper considered the material falls bends down the surface distortion phenomenon, by accurate discussion structure withstanding circulating load function under elastoplasticity behavior.The limited element commercialization analysis software has exudes with the elastoplasticity analysis

The thesis considering yield surface distortions to accurately study on Elasto-plastic behavior of structure under cyclic loading. Commercial finite element analysis of Elasto-plastic analysis function of the software, with universal, but have not been able to provide considering yield surface disto

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