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Math Help - how do you calculate the break load of a cargo net?

  1. #1
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    how do you calculate the break load of a cargo net?

    hiya,
    I require a formula to calculate the strength or break load of a net - constructed from a 2mm diameter dyneema core cord. the cord has a guarenteed b/load of 280kg. if the distance between each cord was 100mm (forming an equally spaced matrix) is it possible to calculate the overall strength of the net?

    assuming the load was applied evenly and any knots in the net didn't weaken or effect b/load.

    thanks for your help

    wayne
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  2. #2
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    Quote Originally Posted by morph View Post
    hiya,
    I require a formula to calculate the strength or break load of a net - constructed from a 2mm diameter dyneema core cord. the cord has a guarenteed b/load of 280kg. if the distance between each cord was 100mm (forming an equally spaced matrix) is it possible to calculate the overall strength of the net?

    assuming the load was applied evenly and any knots in the net didn't weaken or effect b/load.

    thanks for your help

    wayne
    I can't give you any useful help, but the question confuses me a little. Wouldn't the breaking load of the net depend also on the shape of the load the net is supporting? My thought is that some shapes (like triangular, or really anything with sharp edges) would stress individual points on the net more than others (say, a sphere).

    -Dan
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  3. #3
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    the shape of the load would have an effect on the capacity of the net, ie a sphere would have the most uniform distribution yet a rectangular object would have higher stress points around its edges.

    I do not know if net makers take this into consideration when producing/designing their nets. they do however provide 'by law' a maximum load capacity & safe working load.

    a net with smaller distance between its strands will be stronger than a net with huge spaces, is there a formula to work this out?
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