In the past, Cargo Nets were loaded by manpower, so no need for high strength but today, with the increasing superhuman machinery need to build cargo nets with more strength.Heavy traort and fishing have been Included above transition and need to change the design for the required product picks. Today, packaged, protected and reinforcement compositeexpressefor nets. Up to now, most research nets focused on fishing net factors. During the investigation of factors such as raw materials, coupling elements and mesh nets have been studied. In this study, mesh shape, net element structure, type of knot and braid parametereingtudied. So two braid angle, 10 and 17 degrees is used. For connecting the braids to building nets, three types of knot with different structures namely Overhand Bend, Blood and Modified Ultra are used. Two mesh shape, square and triangle who each mesh shape with two and four strand structures, produced four structures comprise the net. Experiments measuring the strength of braids, knots and the nets are done. For uniformity, experiments on braid and knot iiratiofromtandard net test. Experiments have been conducted on knot in six different directions this means that each both pairs of end knot has been tested. The results show that Blood knot is very uniform in different directions and gives the best results to connect two strands. The results of net experiments indicate the square meshes superiority triangular meshes and so structures four-stranded for Overhand bend and Blood knot and two-strand for Ultra knot is superior. Using the finite element method and Abaqus software, the model of Overhand bends knot designed. Each strand ofthe knotas a solid and elastic abject considered. Braid properties of constituent knot extracted from the experimental results given to the software. Displacement uniform ratein elasticrange Applied othe model. Given the tensions visible in the software can be concluded usually, the force extended to the first bending knot. With This fact can be explained differences strength of knot different directions. Keywords Net, Knot, Braid, Strength test, Finite element method.
