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Investigation of Strain Characteristics of Graphite Polyetherether Ketone Using a Nonlinear Analysis and Experimental Methods.

机译:用非线性分析和实验方法研究石墨聚醚醚的应变特征。

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A geometric nonlinear technique is incorporated in a current finite element program. This nonlinear program allows material nonlinearity for calculating the stresses, strains and failure of composites. The improved program uses an updated Langrangian to calculate the stresses and strains. In addition, it updates the fiber orientation due to displacement in order to calculate the updated stiffness matrix. This method is valuable for large strain values. The analytical data were compared to experimental data obtained from Graphite PolyEtherEther Ketone laminates. To obtain data two geometries were used. Digitized photographs were used to measure the angle change for large strains. (JS)

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