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首页> 美国政府科技报告 >Finite Element Analysis System for the Mechanical Behavior of Oriented Fiber Composite Materials under Combined Stresses.
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Finite Element Analysis System for the Mechanical Behavior of Oriented Fiber Composite Materials under Combined Stresses.

机译：复合应力下定向纤维复合材料力学行为的有限元分析。

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A study was conducted on the effects of biaxial stress states on composite deformation,especially the plastic flow behavior or unidirectional composites under multiaxial loading conditions. An analytical model was developed which incorporated the effects of plastic flow in the composite under any multiaxial loading without shear. This model relates the internal stress distributions in each of the constituents of the composite (calculated by the finite element method) to the externally applied loads,thus enabling the stress-strain curve of the entire composite to be generated for the particular loading state. Experimental data were obtained in hydraulic bulge tests,four point bending,hydrostatic pressurization and uniaxial tension. Implications of the analytical and experimental results toward the establishment of a plasticity theory for fiber composites are discussed. (Modified author abstract)

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