根据递增塑性破坏的强度准则，详细讨论了循环弯曲载荷下船体梁的非弹性变形性能。

Based on the strength criterion of the incremental plastic collapse, the inelastic deformation behavior of a ship's hull girder under cyclic bending loads was discussed in detail in this paper.

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在总厚度不变时，破坏载荷，弯曲强度及弹性模量都随金属厚度增加而增加。

Result When the whole thickness of the samples were determined, the fracture load, bending strength and elastic modulus were increasing according the increase of the metal thickness.

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通过实验研究，分析了两种不同性能材料空心球在作为夹芯梁芯材时，梁弯曲的载荷-位移曲线的特点，另外对于结构的破坏进行了简单的力学分析。

Then we discuss the characteristics of the force-displacement curve of the sandwich beam, and finally give a simple mechanical analysis on the failure of the structures.

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