New method on the elastic properties of stitched composites ———Flowf ield modelⅡ: Elastic constants calculation and tests of stitched laminates

Based on the idea of calculating elastic properties of the stitched laminar , a flow field model is set up tocalculate the elastic properties of each laminar for the elastic properties of stitched laminates. Using the flow fieldmodels , the elastic properties of the 0°and 45°stitched laminar are calculated by the micromechanics and the homogenization method. The elastic constant s of 6 set s of stitched laminates are calculated using the modified homogenization method , and the result s are in good agreement with those of the test .